Bolthole Index

Box Elder County, Utah

Building permits, zoning and septic rules in Box Elder County, Utah

41Index Score / 100
#21 of 29 in Utah

Unincorporated Box Elder County, Utah requires building permits for new homes, with county Building Permits/Inspections handling applications and inspections1. County zoning depends on the parcel’s mapped district or unzoned status; municipal land-use questions go to the municipality2. Bear River Health Department handles septic permits where sewer is unavailable3.

At a glance

Building permit
Required for new residential construction in unincorporated Box Elder County1
Zoning
County zoning applies on unincorporated land; mapped districts and unzoned areas have different requirements45
Septic permits
Bear River Health Department: Brigham office for south-county parcels, Tremonton office for north-county parcels; conventional permit fee $840678
RV living
Recreational stays are limited; construction, permitted parks and agricultural workforce housing have exceptions9
Owner-builder
Sole owner, personal use, only residential project that year and no more than 3 residential structures within the form’s lookback period; file the county form10
Detached ADU
Possible in a zone allowing a single-family home, with an administrative conditional-use permit and septic approval11
Agricultural buildings
A structure used solely for agriculture and not for human occupancy is generally exempt from the State Construction Code, but the county still wants its own agricultural-building form filed1213
Private well
Requires a valid Utah water right and an approved Start Card before construction14

Who to call

Building permits

Box Elder County Building Permits/Inspections (Chief Building Official)

Building permit applications, plan review and inspections for unincorporated Box Elder County

435-734-2634

cillum@boxeldercountyut.gov

1 S Main Street, Room 19, Brigham City, UT 84302

Online permits →

Planning & zoning

Box Elder County Community Development/Planning & Zoning

Zoning administration, land use permits, subdivision and conditional use review for unincorporated Box Elder County

435-734-3354

1 S Main Street, Room 34, Brigham City, UT 84302

Septic permits

Bear River Health Department, Brigham Office (Environmental Health)

Onsite wastewater (septic) permits, site evaluations and inspections for the south end of Box Elder County

(435) 792-6500

817 West 950 South, Brigham City, Utah 84302

Septic permits

Bear River Health Department, Tremonton Office (Environmental Health)

Onsite wastewater (septic) permits, site evaluations and inspections for the north end of Box Elder County

(435) 792-6500

440 West 600 North, Tremonton, Utah 84337

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Off-grid gear

Going off-grid in Box Elder County means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Box Elder County, Utah?

New homes in unincorporated Box Elder County require a building permit; construction, alterations, moving structures and land-use changes also require valid permits unless an exemption applies115. Adopted codes include the 2024 International Residential Code, and residential work receives staged inspections before being covered1617. Sole owners building for personal use must file the owner-builder form, have no other residential project that year and have built no more than 3 residential structures within the form’s lookback period; paid helpers must meet the form’s licensing or employment conditions10. Agricultural structures used solely for agriculture, without human occupancy, may qualify for exemption, but plumbing, electrical and mechanical permits may still apply18. File the agricultural form and setback site plan; county-approved subdivision parcels under 2 contiguous acres generally do not qualify unless another exemption applies, and converting an exempt barn to residential use requires county review1819.

Who is the Box Elder County building department, and how do you reach it?

Box Elder County's Building Permits/Inspections office is at 1 S Main Street, Room 19, Brigham City, UT 84302, phone 435-734-2634, and the Chief Building Official can be reached at cillum@boxeldercountyut.gov20. Standard processing takes 7 to 10 business days after every required document arrives2021. Schedule inspections with at least 24 hours' notice, and do not cover work before approval2022. Fees follow the state ICC structure, with a 1% state fee; dwelling plan review is 50% of the permit fee, and the dwelling deposit is $1,70023. Community Development/Planning & Zoning is at 1 S Main Street, Room 34, Brigham City, UT 84302, phone 435-734-335424. The county rules here apply to unincorporated land; Honeyville issues its own building permits, while Bear River Health Department still issues off-sewer septic permits inside Honeyville152526.

Does Box Elder County have zoning?

Unincorporated Box Elder County has mapped zoning and significant unzoned areas; confirm parcel status with Planning & Zoning424. Tremonton and Honeyville set their own zoning; Bear River Health Department handles off-sewer septic permits272878.

Minimum main-use lots are MU-160: 160 acres; MU-80: 80; MU-40: 40; A-20: 20; A-1/2: 0.5; RR-10: 10; RR-5: 5; RR-2: 2; RR-1: 1 acre2930. These districts require 30-foot front yards, or 63 feet from the road centerline where the right-of-way is less than 66 feet31. Main-building side yards are 60 feet in MU districts, A-20 and RR-10; 20 feet in RR-5 and RR-2; 15 feet in A-1/2 and RR-132. Nonagricultural buildings have a maximum height of 35 feet or 2.5 stories33.

RR-20 and R-1-20 require 20,000 square feet, allow 40% coverage and require 30-foot front and rear yards343536. Existing R-1-8 dwelling lots require 8,000 square feet; the district is unavailable for rezoning37. R-1-8 main-building yards are 30 feet front, 25 feet rear and 8 feet each side, with combined side yards of at least 18 feet38.

How do septic permits work in Box Elder County?

Septic permits in Box Elder County go through the Bear River Health Department67. South-county applications go through the Brigham office; north-county applications go through the Tremonton office7. Both offices use (435) 792-65003940. A septic permit is required before constructing, altering or repairing an onsite system where sewer lines are unavailable3. Subdivision development also needs a septic-feasibility letter unless sanitary sewer serves it3. Published fees are $840 for a conventional system, $1,040 for a commercial system and $350 for an alteration; repair permits have no fee8. Only 10.5% of the county's soils are rated “not limited” for a conventional drain field, so obtain a site evaluation before buying and allow for an alternative design41. We could not confirm a routine inspection interval for existing residential systems; ask the Bear River Health Department about the parcel.

Can you live in an RV or tiny home on your land in Box Elder County?

Unincorporated Box Elder County prohibits permanent RV living except in designated, permitted mobile-home or RV parks and agricultural workforce housing9. An issued building permit for a single-family dwelling allows on-site RV residence for up to 365 days or until the certificate of occupancy, whichever comes first9. Recreational camping is limited to 14 consecutive days and 90 total days per calendar year, with dumping only at approved facilities42.

Agritourism RV facilities have separate rules: an administrative conditional-use permit, site-plan review and at least 5 acres in unzoned areas or zones with density of 5 acres or greater43. Agritourism RV spaces must meet underlying-zone main-building setbacks, and the facility needs an annual county business license; visitor septic and water connections are prohibited4443.

A detached ADU needs an administrative conditional-use permit in a zone allowing single-family residences and septic-feasibility approval; RVs and temporary structures do not qualify11. We could not confirm separate tiny-home or manufactured-home occupancy rules; ask Planning & Zoning how the proposed dwelling is classified24. County dwellings must be at least 20 feet wide at the narrowest main-floor point for at least 20 feet, excluding the garage45.

Building a home in Box Elder County: the steps, in order

  1. Ask Community Development/Planning & Zoning to check the Official Zoning Map and identify the parcel's mapped district or unzoned status before design begins4624.
  1. Secure water and wastewater. A private well requires a valid Utah water right and an approved Start Card, while off-sewer development requires Bear River Health Department septic review4748.
  1. Confirm driveway access; county rules limit residential driveway number and width, and a state-highway connection requires a UDOT conditional access permit4950.
  1. Submit the complete home-permit package to Building Permits/Inspections and file the owner-builder certification if applicable215120.
  1. Allow 7 to 10 business days after all documents arrive, then schedule each inspection at least 24 hours ahead and leave work uncovered until approval2122.
  1. Obtain the certificate of occupancy before using the home; occupying a covered building without one is unlawful52.

What to check before you buy land in Box Elder County

For subdivision land, utility availability can determine whether off-grid plans work: sewer connection is required within 300 feet where capacity exists, and a willing culinary water company with lines within 1,000 feet must supply the lot53. A private well requires a valid Utah water right and approved Start Card; shallow wells are regulated too47. In the Agricultural Heritage Zone, residential lots generally require 20,000 square feet unless on a well, with base density of 5 acres for a culinary tap and paved road or 10 acres for a well or gravel road54.

Splitting land requires county subdivision review, including a surveyor’s plat, utility will-serve letters, a title report and septic-feasibility documentation unless sewer serves the development553. The effective property-tax rate is about 0.5%, with a median annual bill near $1,8285657. We could not confirm floodplain-development permit triggers or short-term-rental rules; ask Planning & Zoning before committing24.

Watch-outs

  • Box Elder County’s unzoned land still falls under general county regulations, including building-permit and occupancy requirements581552.
  • We could not confirm the R-1-8 building-height limit; ask Planning & Zoning to resolve the applicable standard before designing5924.
  • General rules apply on unzoned land: residential accessory buildings have a 35-foot height limit, except agricultural buildings, and must meet applicable district setbacks5860.
  • We could not confirm when Box Elder County requires a floodplain-development permit or what rules govern short-term rentals; verify both with Community Development/Planning & Zoning24.

Sources

  1. Building Permits / Inspection, quoted and re-checked
  2. Community Development FAQ, quoted and re-checked
  3. Environmental Health - Bear River Health Department, quoted and re-checked
  4. Land Use Management & Development Code, quoted and re-checked
  5. Does the Box Elder County Community Development Department have jurisdiction over the whole county?, quoted and re-checked
  6. Bear River Health Department - Environmental (2026 county census)
  7. Subdivision Septic System Feasibility Application instructions, quoted and re-checked
  8. Environmental Health - Bear River Health Department, quoted and re-checked
  9. Chapter 5-1 - Regulations Applicable To All Zones, quoted and re-checked
  10. Owner-Builder Form New Fillable, quoted and re-checked
  11. Chapter 5-6 Accessory Dwelling Units, quoted and re-checked
  12. Utah Code § 15A-1-204 (Utah statewide rule), quoted and re-checked
  13. Agricultural Building Application and Statement, quoted and re-checked
  14. Water Well Drilling Information, quoted and re-checked
  15. Chapter 1 – General Provisions, quoted and re-checked
  16. Building Permits / Inspection, quoted and re-checked
  17. Building Permits / Inspection, quoted and re-checked
  18. Agriculture Permit State Issued, quoted and re-checked
  19. Building Permits / Inspection, quoted and re-checked
  20. Box Elder County Building Permits/Inspections (Chief Building Official) (boxeldercountyut.gov)
  21. Building Permits / Inspection, quoted and re-checked
  22. Building Permits / Inspection | Box Elder County, UT, quoted and re-checked
  23. 2026 Fee Schedule for Buildings & Grounds, quoted and re-checked
  24. Box Elder County Community Development/Planning & Zoning (boxeldercountyut.gov)
  25. Honeyville: Honeyville Code § 9-1-3, Building permit required (Box Elder County), quoted and re-checked
  26. Honeyville: Bear River Health Department Environmental Health (Box Elder County), quoted and re-checked
  27. Tremonton: Tremonton Zoning Ordinance § 1.07.015—Lot Regulations (Box Elder County), quoted and re-checked
  28. Honeyville: Honeyville Code § 10-10-8, Agricultural-zone tables (Box Elder County), quoted and re-checked
  29. Chapter 3-2 Multiple Use, Agriculture, & Rural Residential, quoted and re-checked
  30. Chapter 3-2 – Minimal Use, Agricultural, and Rural Residential, quoted and re-checked
  31. Chapter 3-2 Minimal Use, Agricultural, and Rural Residential District, quoted and re-checked
  32. Chapter 3-2 Multiple Use, Agriculture, & Rural Residential, quoted and re-checked
  33. Chapter 3-2 Multiple Use, Agriculture, & Rural Residential, quoted and re-checked
  34. Chapter 3-7 Rural Residential District RR-20 and Residential District R-1-20, quoted and re-checked
  35. Chapter 3-7 Rural Residential District RR-20 and Residential District R-1-20, quoted and re-checked
  36. Chapter 3-7 – Rural Residential District RR-20 and Residential District R-1-20, quoted and re-checked
  37. Chapter 3-3 – Residential District, quoted and re-checked
  38. Chapter 3-3 Residential District, quoted and re-checked
  39. Bear River Health Department, Brigham Office (Environmental Health) (brhdut.gov)
  40. Bear River Health Department, Tremonton Office (Environmental Health) (brhdut.gov)
  41. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  42. Chapter 5-1: Regulation Applicable to All Zones, quoted and re-checked
  43. Chapter 3-6 – Recreational Vehicle Facilities for Agritourism, quoted and re-checked
  44. Chapter 3-6 Recreational Vehicle Facilities for Agritourism, quoted and re-checked
  45. Chapter 4-6: Residential Facilities Standards, quoted and re-checked
  46. Chapter 3-1 – Zones Established, quoted and re-checked
  47. Water Well Drilling Information, quoted and re-checked
  48. Subdivision Septic System Feasibility Application instructions, quoted and re-checked
  49. Chapter 5-2 Off-Street Parking Requirements, quoted and re-checked
  50. Conditional Access Permit (Utah statewide rule), quoted and re-checked
  51. Owner Builder Form New Fillable PDF, quoted and re-checked
  52. Chapter 1 – General Provisions, quoted and re-checked
  53. Chapter 6-1 Subdivisions, quoted and re-checked
  54. Chapter 3-10 Agricultural Heritage Zone (AHZ), quoted and re-checked
  55. Subdivisions, quoted and re-checked
  56. Effective property tax rate: Bolthole Index county data
  57. Median property tax bill: Bolthole Index county data
  58. Chapter 5-1 - Regulations Applicable To All Zones, quoted and re-checked
  59. Chapter 3-3 – Residential District, quoted and re-checked
  60. boxeldercountyut.gov, quoted and re-checked

Written October 12, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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Compared with neighboring counties

Like all 6 of its neighbors, Box Elder County requires a building permit for a home.

RuleBox Elder CountyDavis CountyWeber CountyCache CountyTooele CountyMorgan CountySalt Lake County
Building permitRequiredRequiredRequiredRequiredRequiredRequiredRequired
County zoningYesYesYesYesYesYesYes
Septic permitsBear River Health Dept.County Health Dept.Weber-Morgan Health Dept.Bear River Health Dept.County Health Dept.Weber-Morgan Health Dept.County Health Dept.

County locator

Box Elder County in Utah

41
County map
Box Elder County highlighted among the Utah counties · colored by Index score

How Box Elder County scores

Seclusion71100% ev.
Self-Sufficiency17100% ev.
Admin Boringness40100% ev.
Durability38100% ev.
Property Autonomy60100% ev.
Carry Cost79100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$457kTypical home
0.5%Property tax
$2,495Land / acre
12.4"Annual rain
30.3% of yrsSevere drought
11 / yr (+9.7)Mid-century 100°F days
30.8 daysMid-century dry spell
0.69" (+8.5%)Mid-century 1-day rain
1.15×Wildfire change factor
100%Forward climate coverage
$1,119Home insurance / yr
6.5% / yrInsurance growth
0.94%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
107Radius comparison (15 mi)
10.9People / sq mi
34.9%Federal land
76.4%Land at 15% slope or less
10.5%Soils rated "not limited" for septic (strict USDA rating)
269,637 acWorkable land screen
4.2%Wooded land
11.4 tonsBiomass / forest ac
48.4°FAvg temp

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Cities and towns in Box Elder County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet researched: Bear River City · Corinne · Town of Deweyville · Town of Elwood · Town of Fielding · Garland · Town of Howell · Town of Mantua · Perry · Town of Plymouth · Town of Portage · Town of Snowville · Willard

Answers from the rulebook for Box Elder County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Box Elder County rules

  • Building permitLimited

    Agricultural structures in Box Elder County used solely in conjunction with agricultural use and not for human occupancy, and certain qualifying sales structures.

    • The agricultural structure must be used solely in conjunction with agricultural use and not for human occupancy.
    • A qualifying sales structure must be no more than 1,500 square feet and used solely for the type of sales described in Utah Code §59-12-104(20).
    • Plumbing, electrical, and mechanical permits may still be required when that work is included.
    • Unless another exemption applies, the exemption does not apply to a structure on land within a city or town and less than five contiguous acres.
    • Unless another exemption applies, the exemption does not apply to a structure within a county-approved subdivision and less than two contiguous acres.
    • The County agricultural application requires a site plan identifying all structures, the proposed agricultural structure, and setbacks from all property lines.
    • The agricultural building may not be used for residential or commercial purposes other than agriculture; changing its use requires Building Department and Planning & Zoning Department review if a building permit and inspections were not obtained during construction.

    maximum qualifying sales structure area: <= 1500 sq ft (Must be used solely for the sales described in Utah Code §59-12-104(20).) · minimum contiguous area inside a city or town for exemption: >= 5 acres (Unless the land is wholly or partly in an agricultural protection area.) · minimum contiguous area in a county-approved subdivision for exemption: >= 2 acres (Unless the land is wholly or partly in an agricultural protection area.)

    “a structure used solely in conjunction with agriculture use, and not for human occupancy [...] is exempt from the permit requirements”
    4 more reviewed findings on this topic
    • Required — Construction, reconstruction, alteration, or movement of a building or structure, and changes in the use or status of land, in unincorporated Box Elder County.
      “This Code shall apply to all property within the unincorporated areas of Box Elder County except property expressly exempted therefrom by the provisions of this Code or other lawful exemption. [...] No building or structure shall be constructed, reconstructed, altered, or moved, nor shall the use or status of land be changed except after the issuance of valid permits which conform to the requirements of this Code, unless no permit is required by this Code or by the construction codes applicable to the County.”
    • Required — New residential construction requiring county building-permit review in unincorporated Box Elder County.
      “Use the check list below to ensure you provide to the county all required items when turning in plans for building permits. [...] BUILDING PERMIT APPLICATION – THE APPLICATION MUST BE COMPLETE WHEN SUMITTED.”
    • Limited — Agricultural structures in Box Elder County used solely in conjunction with agriculture and not for human occupancy, or qualifying agricultural-sales structures of no more than 1,500 square feet.
      “Except as provided in Subsection (11)(b), a structure used solely in conjunction with agriculture use, and not for human occupancy, or a structure that is no more than 1,500 square feet and used solely for the type of sales described in Subsection 59-12-104(20), is exempt from the permit requirements of the State Construction Code.”
    • Required — Construction, reconstruction, alteration, movement of a building or structure, or a change in land use or land status, in unincorporated Box Elder County.
      “No building or structure shall be constructed [...] except after the issuance of valid permits”
  • Owner-builder exemptionAvailable (with conditions)

    Owner-builders performing new residential construction, remodels, or additions in unincorporated Box Elder County and filing the County-hosted Utah Owner/Builder Certification with the Building Department.

    • For new residential construction, the owner must be the sole owner of the property and construction project.
    • For new residential construction, the project must be the only residential structure the owner has built that year.
    • The owner must not have built more than three residential structures in the past five years.
    • The improvements must be intended for and used as the owner's personal, non-commercial, non-public use.
    • Work may be performed by the sole owner, a licensed contractor, qualifying employees covered by workers compensation insurance with required payroll taxes, or another person under the owner's supervision receiving no compensation or only token compensation.
    • Retaining or compensating an unlicensed contractor or unlicensed person for work requiring licensure may constitute a Class A misdemeanor and may result in an administrative fine of up to $2,000 per day.
    • The signed certification is filed with the Building Department.

    maximum prior residential structures built in past five years: <= 3 structures (For new residential construction only; the form states the owner has not built more than three.) · new residential structures built in current year: 1 structure (The project must be the only residential structure the owner has built that year.) · maximum administrative fine for violation: <= 2000 USD per day (The form states the maximum administrative fine.)

    “I understand that work performed on the project must be performed by the following: a. myself as the sole owner of the property; or b. a licensed contractor; or c. my employee(s) on whom I have Workers Compensation Insurance coverage, on whom I withhold and pay all required payroll taxes, and with respect to whom I comply with all other applicable employee/employer laws; or d. any other person working under my supervision as Owner/Builder to whom no compensation or only token compensation is paid; and”
  • Building code adoptedAdopted (with conditions)

    Building-code administration by Box Elder County for unincorporated Box Elder County.

    • The county building-permit page identifies a 2024 Adopted Code document among its forms and applications.
    • The adopted-code document lists the 2024 International Building Code, including Appendix J; the 2024 International Residential Code; the 2024 International Plumbing Code; the 2024 International Mechanical Code; the 2024 International Fuel Gas Code; the 2026 National Electrical Code; the 2024 International Energy Conservation Code; and the 2024 International Existing Building Code.
    • The International Existing Building Code is subject to §15A-2-104(2) of the Utah Code and the HUD Code.

    permit processing time: 7 to 10 business days (Once the office receives all required documents.) · inspection notice: >= 24 hours (Required for all inspections.)

    “2024 edition of the International Building Code, Including Appendix J, issued by the International Code Council.”
  • InspectionsRequired

    Residential building projects handled by Box Elder County Building Permits / Inspections.

    • A 24-hour advance notice is required to schedule inspections.
    • The County states that the list is general and project-specific conditions may require additional inspections.
    • No portion of construction may be covered until inspections have been approved.
    • Typical inspections include footing, foundation, insulation, sub-rough plumbing/mechanical/electrical, rough inspections, final inspections, and trade-specific inspections where applicable.

    advance inspection notice: >= 24 hours

    “This is a general list of the inspections typically required for a residential project.”
    One more reviewed finding on this topic
    • Required — Residential building projects requiring County building inspections in unincorporated Box Elder County.
      “To schedule an inspection, please call 435-734-2634 and allow for 24 hour advance scheduling. REQUIRED RESIDENTIAL BUILDING INSPECTIONS This is a general list of the inspections typically required for a residential project. There may be unique conditions in your individual project that may require inspections beyond those outlined here. Do not cover any portion on the construction until inspections have been approved.”
  • Certificate of occupancyRequired

    Use or occupancy of any lot, parcel, building, or structure governed by the Box Elder County Land Use Management & Development Code in unincorporated Box Elder County.

    • The building and the lot or parcel must conform to applicable provisions of the County Code and other building codes and regulations adopted by the County.
    • Using or occupying a building or structure without a certificate of occupancy is unlawful.
    • Using or occupying a building or structure for a use or occupancy different from the certificate is unlawful.
    • Failure to obtain a certificate is a violation of the Code.
    • A premises without an issued certificate is declared a public nuisance and may be abated.
    “No lot, parcel, or building shall be used or occupied until a certificate of occupancy has been issued pursuant to applicable provisions of building codes and regulations adopted by the County. No certificate of occupancy shall be issued unless the building and the lot or parcel on which the building is located conform to applicable provisions of this Code and other building codes and regulations adopted by the County.”
    2 more reviewed findings on this topic
    • Limited — Projects in unincorporated Box Elder County subject to the county outdoor-lighting standards, including projects with existing lighting directly impacted by a building-permit application and projects with proposed lighting output of at least 100,000 lumens.
      “These outdoor lighting standards apply to all areas of unincorporated Box Elder County. [...] For all projects where the total initial output of the proposed lighting equals or exceeds 100,000 lumens, certification that the lighting, as installed, conforms to the approved plans shall be provided by a certified engineer before the certificate of occupancy is issued.”
    • Required — Use or occupancy of a lot, parcel, building, or structure in unincorporated Box Elder County subject to the County Land Use Management & Development Code.
      “until a certificate of occupancy has been issued”
  • County-wide zoningPresent (with conditions)

    County-administered zoning in unincorporated Box Elder County.

    • The County Land Use Management & Development Code establishes zoning districts and an Official Zoning Map.
    • Each lot or parcel within the unincorporated boundaries is subject to the requirements of its mapped zone.
    • The County does not oversee land-use development within municipalities.
    • The County has significant areas of unzoned land, and proposed zoning for those parcels was under countywide review as of September 15, 2026.
    • Parcel-specific applicability requires checking the Official Zoning Map.
    “Each lot or parcel within the unincorporated boundaries of Box Elder County shall be subject to the requirements of the zone, or zones, in which the lot or parcel is located as shown on the Official Zoning Map.”
    One more reviewed finding on this topic
    • Present (with conditions) — County zoning regulation for lots and parcels within the unincorporated boundaries of Box Elder County.
      “Each lot or parcel within the unincorporated boundaries of Box Elder County shall be subject to the requirements of the zone, or zones, in which the lot or parcel is located as shown on the Official Zoning Map.”
  • Local zoningVaries (with conditions)

    Aggregate local-zoning conclusion for territory within Box Elder County, including county-administered unincorporated areas and incorporated municipalities.

    • The county administers land-use development only in unincorporated Box Elder County.
    • Land-use inquiries, applications, and development matters within a municipal boundary must be directed to the specific municipality.
    • Within unincorporated areas, zoning varies by mapped zone and significant areas were officially identified as unzoned as of September 15, 2026.
    • A parcel-specific determination requires checking the applicable county or municipal zoning authority and map.
    “No, Box Elder County only oversees land use development for unincorporated Box Elder County. For land use questions within a municipality, we would refer you to the specific municipality.”
    2 more reviewed findings on this topic
    • Varies (with conditions) — Aggregate local zoning across Box Elder County, including county regulation of unincorporated areas and separate municipal land-use regulation within municipalities.
      “No, Box Elder County only oversees land use development for unincorporated Box Elder County. For land use questions within a municipality, we would refer you to the specific municipality.”
    • Varies (with conditions) — Aggregate local zoning status across Box Elder County: county zoning districts apply to mapped unincorporated parcels, while the county's official news release states that significant areas are currently unzoned; this aggregate does not establish that the county administers municipal ordinances.
      “Box Elder County currently has significant areas of unzoned land. Through Box Elder Together, Community Development staff will develop proposed zoning based on existing and historical land uses for the unzoned land parcels.”
  • Minimum dwelling sizeSpecified

    Residential dwellings and residential facilities in unincorporated Box Elder County.

    • The cited dimensional standards are in Chapter 4-6, Residential Facilities Standards, and apply in addition to the applicable zoning district and building-code requirements.
    • The minimum width excludes the garage area and is measured at right angles to the width face.
    • The storage requirement may be satisfied within the residential facility, basement, garage area supplemental to the facility, or a compliant accessory storage structure.
    • The required documents for new homes include floor plans for each level and associated plumbing, mechanical, electrical, and gas-line information.
    • The County's adopted building codes include the 2024 International Residential Code.

    minimum dwelling width: >= 20 feet (At the narrowest point of the main floor at ground level for at least twenty feet; measured at right angles to the width face; garage area excluded.) · minimum enclosed storage space: >= 72 square feet (At least six feet of clear height.)

    “The minimum width of any dwelling shall be at least twenty (20) feet at the narrowest point of the main floor at ground level for at least twenty (20) feet measured at right angles to the width face exclusive of garage area.”
  • Minimum lot sizeDistrict specific (with conditions)

    Lots and parcels within the unincorporated boundaries of Box Elder County that are subject to the county zoning districts listed in Chapter 3-1.

    • Each lot or parcel within the unincorporated boundaries of Box Elder County is subject to the requirements of the zone shown on the Official Zoning Map.
    • A-20 requires 20 acres.
    • MU-160 requires 160 acres or a quarter section.
    • MU-80 requires 80 acres.
    • MU-40 requires 40 acres.
    • RR-10 requires 10 acres.
    • RR-5 requires 5 acres.
    • RR-2 requires 2 acres.
    • RR-1 requires 1 acre.
    • RR-20 requires 20,000 square feet.
    • R-1-20 requires 20,000 square feet.
    • The cited Chapter 3-1 source does not state minimum lot sizes for the listed commercial, manufacturing, or overlay zones; this claim does not infer that those zones have no minimum lot-size requirement.
    • The Solid Waste Zone chapter separately requires successful rezoning to a Solid Waste Zone, a Conditional Use Permit, and compliance with all chapter requirements before a solid waste landfill may operate; it does not state a numeric minimum lot-size or acreage standard in the reviewed provisions.

    A-20 minimum lot size: 20 acres · MU-160 minimum lot size: 160 acres or quarter section · MU-80 minimum lot size: 80 acres · MU-40 minimum lot size: 40 acres · RR-10 minimum lot size: 10 acres · RR-5 minimum lot size: 5 acres · RR-2 minimum lot size: 2 acres · RR-1 minimum lot size: 1 acre · RR-20 minimum lot size: 20000 square feet · R-1-20 minimum lot size: 20000 square feet

    “1. A-20. Minimum Lot Size: 20 acres [...] 1. R-1-20: Minimum Lot Size: 20,000 sq. ft.”
    18 more reviewed findings on this topic
    • District specific (with conditions) — Main uses on parcels in the MU-160 zone shown on the Box Elder County Official Zoning Map.
      “MU 160 MU 80 MU 40 A 20 A 1/2 RR 10 RR 5 RR 2 RR 1 [...] The minimum lot area in acres for any main use in the districts regulated by this Chapter shall be: 160 80 40 20 1/2 10 5 2 1”
    • District specific (with conditions) — Main uses on parcels in the MU-80 zone shown on the Box Elder County Official Zoning Map.
      “MU 160 MU 80 MU 40 A 20 A 1/2 RR 10 RR 5 RR 2 RR 1 [...] The minimum lot area in acres for any main use in the districts regulated by this Chapter shall be: 160 80 40 20 1/2 10 5 2 1”
    • District specific (with conditions) — Main uses on parcels in the MU-40 zone shown on the Box Elder County Official Zoning Map.
      “MU 160 MU 80 MU 40 A 20 A 1/2 RR 10 RR 5 RR 2 RR 1 [...] The minimum lot area in acres for any main use in the districts regulated by this Chapter shall be: 160 80 40 20 1/2 10 5 2 1”
    • District specific (with conditions) — Main uses on parcels in the A-20 zone shown on the Box Elder County Official Zoning Map.
      “MU 160 MU 80 MU 40 A 20 A 1/2 RR 10 RR 5 RR 2 RR 1 [...] The minimum lot area in acres for any main use in the districts regulated by this Chapter shall be: 160 80 40 20 1/2 10 5 2 1”
    • District specific (with conditions) — Main uses on parcels in the A-1/2 zone shown on the Box Elder County Official Zoning Map.
      “MU 160 MU 80 MU 40 A 20 A 1/2 RR 10 RR 5 RR 2 RR 1 [...] The minimum lot area in acres for any main use in the districts regulated by this Chapter shall be: 160 80 40 20 1/2 10 5 2 1”
    • District specific (with conditions) — Main uses on parcels in the RR-10 zone shown on the Box Elder County Official Zoning Map.
      “MU 160 MU 80 MU 40 A 20 A 1/2 RR 10 RR 5 RR 2 RR 1 [...] The minimum lot area in acres for any main use in the districts regulated by this Chapter shall be: 160 80 40 20 1/2 10 5 2 1”
    • District specific (with conditions) — Main uses on parcels in the RR-5 zone shown on the Box Elder County Official Zoning Map.
      “MU 160 MU 80 MU 40 A 20 A 1/2 RR 10 RR 5 RR 2 RR 1 [...] The minimum lot area in acres for any main use in the districts regulated by this Chapter shall be: 160 80 40 20 1/2 10 5 2 1”
    • District specific (with conditions) — Main uses on parcels in the RR-2 zone shown on the Box Elder County Official Zoning Map.
      “MU 160 MU 80 MU 40 A 20 A 1/2 RR 10 RR 5 RR 2 RR 1 [...] The minimum lot area in acres for any main use in the districts regulated by this Chapter shall be: 160 80 40 20 1/2 10 5 2 1”
    • District specific (with conditions) — Main uses on parcels in the RR-1 zone shown on the Box Elder County Official Zoning Map.
      “MU 160 MU 80 MU 40 A 20 A 1/2 RR 10 RR 5 RR 2 RR 1 [...] The minimum lot area in acres for any main use in the districts regulated by this Chapter shall be: 160 80 40 20 1/2 10 5 2 1”
    • District specific (with conditions) — Single-family dwelling structures on parcels in the R-1-8 zone shown on the Box Elder County Official Zoning Map.
      “R-1-8 3-3-080-1 AREA REGULATIONS 3-3-080-1.1 The minimum lot area in square feet for a single-family dwelling structure in the district regulated by this chapter shall be: 8,000”
    • District specific (with conditions) — Main uses on parcels in the RR-20 zone shown on the Box Elder County Official Zoning Map.
      “RR-20 & R-1-20 3-7-080-1 AREA REGULATIONS 3-7-080-1.1 The minimum lot area in square feet for any main use shall be: 20,000 sq. ft.”
    • District specific (with conditions) — Main uses on parcels in the R-1-20 zone shown on the Box Elder County Official Zoning Map.
      “RR-20 & R-1-20 3-7-080-1 AREA REGULATIONS 3-7-080-1.1 The minimum lot area in square feet for any main use shall be: 20,000 sq. ft.”
    • District specific (with conditions) — Main uses in Box Elder County minimal-use, agricultural, and rural-residential districts.
      “The minimum lot area in acres for any main use in the districts regulated by this Chapter shall be: 160 80 40 20 1/2 10 5 2 1”
    • Specified — Single-family dwelling structures in the existing R-1-8 residential district.
      “The minimum lot area in square feet for a single-family dwelling structure in the district regulated by this chapter shall be: 8,000”
    • Specified — Recreational vehicle facilities for agritourism in unzoned areas and Box Elder County zones with a density of five acres or greater.
      “Recreational vehicle facilities for agritourism shall be allowed in all unzoned areas and zones of a density of five (5) acres or greater. A minimum of five (5) acres is required for a recreational vehicle facility for agritourism. A single owner across contiguous parcels may count all their acreage used for agricultural production towards the minimum acreage requirement.”
    • District specific (with conditions) — Residential lots and residential development in Box Elder County's Agricultural Heritage Zone (AHZ).
      “AHZ Residential 20,000 sq. ft. unless the lot is on a well. [...] The base density for the AHZ shall be 5 acres if the lots will be connected to a culinary tap from a water company and is located along a paved road. The base density for lots that are connected to a well or that are along a gravel road shall be 10 acres.”
    • District specific (with conditions) — Main uses in Box Elder County MU-160, MU-80, MU-40, A-20, A-1/2, RR-10, RR-5, RR-2, and RR-1 districts.
      “The minimum lot area in acres for any main use in the districts regulated by this Chapter shall be: 160 80 40 20 1/2 10 5 2 1”
    • Specified — Any main use in the RR-20 and R-1-20 districts.
      “The minimum lot area in square feet for any main use shall be: 20,000 sq. ft.”
  • SetbacksDistrict specific (with conditions)

    C-N, C-S, C-H, C-G, M-FP, M-G, and C-E districts regulated by Chapter 3-4.

    • Front yard is 25 feet in all listed districts.
    • Manufacturing-distribution structures have a 25-foot front yard except M-FP, which has a 150-foot front yard.
    • Side yard is 10 feet in all listed districts.
    • Side yard on a corner lot is 25 feet in all listed districts except M-G, where it is 10 feet; Section 5-1-180 also applies.
    • Rear yard is 20 feet in all listed districts.
    • M-FP has minimum setbacks of 800 feet from down-gradient surface water, 500 feet from any other surface water, and 150 feet from residential zoning districts.

    front yard: 25 feet (M-FP manufacturing-distribution structures require 150 feet.) · side yard: 10 feet · corner-lot side yard: 25 feet (M-G requires 10 feet; Section 5-1-180 applies.) · rear yard: 20 feet

    “Front Yard 25 25 25 25 25 25 25 Side Yard 10 10 10 10 10 10 10”
    6 more reviewed findings on this topic
    • Specified — Main and accessory buildings in the R-1-8 residential district regulated by Chapter 3-3.
      “The minimum depth in feet for the front yard for main buildings in districts regulated by this Chapter shall be: 30”
    • District specific (with conditions) — Main buildings in the Chapter 3-2 MU-160, MU-80, MU-40, A-20, A-1/2, RR-10, RR-5, RR-2, and RR-1 districts in unincorporated Box Elder County.
      “The minimum side yard in feet for any main building in districts regulated by this Chapter shall be: 60 60 60 60 15 60 20 20 15”
    • District specific (with conditions) — Main and accessory buildings in the RR-20 and R-1-20 districts.
      “The minimum depth in feet for the front yard for main buildings and accessory buildings shall be: 30 feet”
    • District specific (with conditions) — Main and accessory buildings in MU, A, and RR districts regulated by Chapter 3-2.
      “The minimum depth in feet for the front yard for main buildings and accessory buildings in districts regulated by this chapter shall be: 30 30 30 30 30 30 30 30 30”
    • District specific (with conditions) — Recreational vehicle facilities for agritourism located in any underlying zoning district.
      “Recreational vehicle spaces must meet the required minimum setbacks for main buildings of the zone in which the development is located.”
    • District specific (with conditions) — Main and accessory buildings in the established R-1-8 residential district.
      “Accessory buildings may have a minimum setback in feet listed provided that all drainage from them stays on the lot and there is at least 10 feet distance to another accessory building on an adjacent lot 1”
  • Lot coverageDistrict specific (with conditions)

    Lot coverage in MU, A, and RR districts regulated by Chapter 3-2.

    • The source lists coverage values in table order: MU-160, MU-80, MU-40, A-20, A-1/2, RR-10, RR-5, RR-2, RR-1.
    • A dash indicates no numeric coverage value in the displayed table; it is not treated as proof of absence.

    maximum lot coverage by district: MU-160: not numerically stated; MU-80: not numerically stated; MU-40: not numerically stated; A-20: not numerically stated; A-1/2: 40%; RR-10: 5%; RR-5: 10%; RR-2: 25%; RR-1: 20% percent

    “The maximum coverage in percent for any lot in the districts regulated by this Chapter shall be: - - - - 40 5 10 25 20”
    3 more reviewed findings on this topic
  • Building heightDistrict specific (with conditions)

    Buildings and structures other than agricultural buildings in the MU-160, MU-80, MU-40, A-20, A-1/2, RR-10, RR-5, RR-2, and RR-1 districts.

    • The maximum is 35 feet or 2½ stories in every district column listed in Chapter 3-2.
    • Agricultural buildings are excepted from this specific maximum-height provision.

    maximum height: 35 feet or 2.5 stories in MU-160, MU-80, MU-40, A-20, A-1/2, RR-10, RR-5, RR-2, and RR-1 (Except for agricultural buildings.)

    “Except for agricultural buildings, the maximum height for all buildings and structures in districts regulated by this chapter shall be:”
    8 more reviewed findings on this topic
    • District specific (with conditions) — Buildings and structures in Box Elder County minimal-use, agricultural, and rural-residential districts regulated by Chapter 3-2.
      “Except for agricultural buildings, the maximum height for all buildings and structures in districts regulated by this chapter shall be: 35 feet or 2½ stories”
    • District specific (with conditions) — Non-agricultural buildings and structures in the Chapter 3-2 MU-160, MU-80, MU-40, A-20, A-1/2, RR-10, RR-5, RR-2, and RR-1 districts.
      “Except for agricultural buildings, the maximum height for all buildings and structures in districts regulated by this chapter shall be: 35 feet or 2½ stories”
    • District specific (with conditions) — All buildings and structures in the RR-20 and R-1-20 districts regulated by Chapter 3-7.
      “The maximum height for all buildings and structures shall be: 35 feet or 2 ½ stories”
    • District specific (with conditions) — Buildings and structures in MU, A, and RR districts regulated by Chapter 3-2, excluding agricultural buildings.
      “Except for agricultural buildings, the maximum height for all buildings and structures in districts regulated by this chapter shall be: 35 feet or 2½ stories”
    • Specified — Buildings and structures in the RR-20 and R-1-20 districts.
      “The maximum height for all buildings and structures shall be: 35 feet or 2 ½ stories”
    • Specified — Building-height regulations in all zoned and un-zoned areas of unincorporated Box Elder County, including dwellings, accessory buildings, and authorized public or utility buildings.
      “applicable throughout the County regardless of zone [...] no building which is accessory [...] shall be erected to a height greater than thirty-five (35) feet.”
    • Specified — Buildings and structures in the established R-1-8 residential district.
      “The minimum height for all buildings and structures in districts regulated by this Chapter shall be: 35 feet or 2½ stories”
    • Specified — Accessory buildings to existing one-family, two-family, three-family, or four-family dwellings in unincorporated Box Elder County.
      “Except for agricultural buildings, no building which is accessory to an existing one-family, two-family, three-family, or four-family dwelling shall be erected to a height greater than thirty-five (35) feet.”
  • Living in an RVLimited

    Occupancy of recreational vehicles on lots or parcels within unincorporated Box Elder County

    • Recreational vehicles may not be used as permanent living.
    • Occupancy is limited to 14 consecutive days and no more than 90 total days in a calendar year.
    • Use must be recreational only and not longer-term placement or full-time permanent living.
    • Dumping is prohibited except at approved dumping facilities.
    • Unused recreational vehicles may be temporarily stored on private residential lots if they comply with the Code and are not parked in the public right-of-way or front yard.
    • A person with an issued building permit may reside in an RV during construction of a single-family dwelling, beginning on permit issuance and ending after 365 days or issuance of the Certificate of Occupancy, whichever is less.
    • Long-term permanent RV living may occur in a designated and permitted mobile-home or recreational-vehicle park.
    • Agricultural workforce housing is an exception.

    maximum consecutive occupancy: <= 14 days · maximum annual occupancy: <= 90 days per calendar year · construction occupancy period: <= 365 days (or until issuance of the Certificate of Occupancy, whichever is less)

    “Recreational vehicles shall not be occupied on a lot or parcel for more than 14 consecutive days and no more than 90 total days of any single calendar year.”
  • Camping on your landLimited

    Temporary camping or temporary RV occupancy on a lot or parcel within unincorporated Box Elder County

    • Camping in an RV is limited to recreational use and may not exceed 14 consecutive days or 90 total days in a calendar year.
    • RV dumping is allowed only at approved dumping facilities.
    • Construction-related RV residence requires an issued building permit and ends after 365 days or issuance of the Certificate of Occupancy, whichever is less.
    • Permanent RV living is allowed only in a designated and permitted mobile-home or recreational-vehicle park or for agricultural workforce housing.

    maximum consecutive camping period: <= 14 days · maximum annual camping period: <= 90 days per calendar year

    “The recreational vehicle use shall be limited to recreational uses only and not for longer term placement or for full-time, permanent living.”
    One more reviewed finding on this topic
  • Accessory dwellingsLimited

    Detached accessory dwelling units on parcels in unincorporated Box Elder County located in a zone that allows a single-family residence.

    • An administrative conditional use permit from the zoning administrator is required.
    • The property owner must occupy either the principal unit, the ADU, or the IADU as a permanent residence, and the application must include evidence of owner occupancy.
    • The ADU may not be sold separately from the main unit and may not be rented for periods of less than 30 days.
    • Only one ADU or IADU may be created per lot or property in zones allowing single-family dwellings.
    • The ADU must comply with applicable building, plumbing, electrical, mechanical, fire, health, and other codes; separate utility meters and separate addresses are prohibited.
    • The minimum lot size is 20,000 square feet.
    • The ADU may not be located in a front or corner-lot side yard and must meet the primary residence's zoning setbacks.
    • The ADU and main dwelling must be on the same parcel and may not be subdivided.
    • The ADU must be compatible with surrounding exterior colors and materials; its maximum height may not exceed the roof elevation of the primary structure.
    • At least one off-street parking space is required.
    • More restrictive subdivision CC&Rs govern where applicable.
    • The zoning administrator may impose additional or more stringent conditions under Section 2-2-110.
    • Multi-family homes, mobile homes, RVs, trailers, campers, tents, and other temporary structures or vehicles do not qualify as an ADU or IADU.
    • The owner must record an affidavit and notice against the property; a future purchaser must sign and record a new affidavit and reauthorize the ADU.
    • The county page lists an Administrative Conditional Use Permit application fee of $375 for 2026.
    • All ADUs must be reviewed and approved for septic feasibility by the Bear River Health Department.

    minimum lot size: >= 20000 square feet (applies in all zones that allow single-family dwellings) · maximum ADU area: < 40 percent of primary residence square footage · minimum off-street parking: >= 1 space (for the ADU or IADU) · transient rental period: >= 30 days (rentals for periods less than 30 days are prohibited) · administrative conditional use permit fee: 375 USD (2026 county fee schedule)

    “An ADU meeting the regulations and standards, as specified in this chapter, may be allowed in any zone that allows a single-family residence after approval of an administrative conditional use permit (§2-2-110) by the zoning administrator.”
  • Who permits septicLocal

    Septic feasibility and septic permitting for Box Elder County properties served by the Bear River Health Department.

    • The Bear River Health Department serves Cache, Box Elder, and Rich counties.
    • Box Elder County South applications are handled through the BRHD Brigham City office; Box Elder County North applications are handled through the BRHD Tremonton office.
    “Bear River Health department [...] septic feasibility in [...] Box Elder”
  • Septic permitRequired

    Constructing, altering, or repairing a septic system in Box Elder County where sewer lines are not available.

    • The Bear River Health Department page states the requirement applies where sewer lines are not available.
    • The page lists fees of $840 for a conventional septic system permit, $1,040 for a commercial septic system, $350 for an alteration permit, and $0 for a repair permit.
    • The permit must meet design and location standards based on soil conditions, site plan, and soil percolation test results.

    conventional septic system permit fee: 840 USD (includes $800 conventional septic system permit plus $40 Utah Department of Environmental Quality fee) · commercial septic system permit fee: 1040 USD (includes $1,000 commercial septic system permit plus $40 Utah Department of Environmental Quality fee) · alteration septic system permit fee: 350 USD · repair septic system permit fee: 0 USD

    “A septic permit is a legal document required by Bear River Health Department before constructing, altering, or repairing a septic system on a property where sewer lines are not available.”
  • Off-grid sanitationLimited

    Onsite wastewater sanitation for subdivision development in unincorporated Box Elder County when public sewer is unavailable or impractical.

    • Where sewer is not available or practical, wastewater from subdivision building developments must be connected to onsite wastewater systems.
    • A septic feasibility letter from the Bear River Health Department is required for any development unless it is serviced by a sanitary sewer system.
    • A septic permit is required before constructing, altering, or repairing a septic system where sewer lines are unavailable.
    • This claim does not establish permission for composting toilets, holding tanks, or other non-septic sanitation systems.
    “Where sewer is not available or practical, [...] connected to onsite wastewater systems (septic systems).”
    One more reviewed finding on this topic
    • Limited — Off-sewer residential wastewater disposal through an onsite wastewater system in Box Elder County.
      “A septic permit is a legal document required by Bear River Health Department before constructing, altering, or repairing a septic system on a property where sewer lines are not available.”
  • Mandatory utility hookupConditional

    Subdivision development and utility extensions in unincorporated Box Elder County.

    • Where a public sanitary sewer is available, connection to that public sanitary sewer is required, including sewer mains and laterals to each lot.
    • Any development of any size that will be on a sewer system must enter into a development agreement with Box Elder County.
    • Where a current public sewer system exists, connection is required if the development is within 300 feet of the sewer system and capacity exists.
    • An approved culinary water supply must be available to each subdivision lot.
    • If a water company has water lines within 1,000 feet of a lot and is willing to provide water, culinary water must be provided by that public culinary water company.
    • If the culinary water company will not provide water, private wells may be used subject to the county's well, testing, and subdivision limits.
    • Utility lines may not be installed to a building, structure, or use that does not comply with the county code or other local regulations.

    water-line proximity threshold: <= 1000 feet (The water company must also be willing to provide water.) · public-sewer connection distance: <= 300 feet (Connection is required only if capacity exists.)

    “Where a public sanitary sewer is available, the subdivider shall connect with a public sanitary sewer”
    One more reviewed finding on this topic
    • Conditional — Wastewater disposal for subdivision building developments in Box Elder County where sewer service is unavailable or impractical.
      “Where sewer is not available or practical, the drainage systems of all wastewater (kitchen, bathroom, laundry, etc.) from subdivision building developments are required to be connected to onsite wastewater systems (septic systems).”
  • Agricultural exemptionConditional

    Agricultural buildings in Box Elder County submitted through the County agricultural-building application process.

    • The structure must be used solely in conjunction with agriculture and must not be for human occupancy, or must be no more than 1,500 square feet and used solely for the specified sales described in Utah Code § 59-12-104(20).
    • Plumbing, electrical, and mechanical permits may still be required when that work is included.
    • Unless otherwise exempted, the structure is not exempt when located within a city or town and on less than five contiguous acres, or within a county-approved subdivision and on less than two contiguous acres.
    • The County application states that the building may not be used for residential or commercial purposes other than agriculture and that a site plan identifying the structure and setbacks from property lines must be submitted.

    sales-structure maximum size: <= 1500 square feet (Used solely for the type of sales described in Utah Code § 59-12-104(20)) · city or town acreage threshold: < 5 contiguous acres (Not exempt unless located in an agricultural protection area or otherwise exempted) · county-approved subdivision acreage threshold: < 2 contiguous acres (Not exempt unless otherwise exempted)

    “Except as provided in Subsection (11)(b), a structure used solely in conjunction with agriculture use, and not for human occupancy, or a structure that is no more than 1,500 square feet and used solely for the type of sales described in Subsection 59-12-104(20), is exempt from the permit requirements of the State Construction Code.”
    One more reviewed finding on this topic
    • Conditional — Agricultural buildings requiring county building-permit processing in Box Elder County.
      “Agricultural Exemptions Form A site plan showing where on the property the agricultural building will be located and how many feet it will be from each property line needs to be submitted with the application.”
  • Subdividing landRegulated (with conditions)

    Division, re-subdivision, or proposed division of land in unincorporated Box Elder County for offer, sale, lease, or development.

    • Subdivision review may involve Roads, Building, GIS, Fire, Engineer/Surveyor, and Planning Departments.
    • Required materials include a Utah-licensed professional surveyor's plat, utility will-serve letters, Bear River Health Department septic feasibility letter, current title report, and county application.
    • Property within 1/2 mile of an existing municipal boundary may be subject to the county annexation policy before county processing.
    • Small subdivisions are no more than three new building lots without public improvements and remain subject to all applicable code requirements.
    “It shall be unlawful for any person to subdivide any tract or parcel of land which is located wholly or in part in the County except in compliance with this Code.”
  • Driveway accessRequired

    Access to residential and nonresidential lots and uses in unincorporated Box Elder County.

    • Adequate ingress and egress must be provided to and from all uses.
    • For each residential lot, no more than one access driveway is allowed and it may be no more than 20 feet wide at the street lot line.
    • A residential lot with frontage greater than 100 feet may provide two access driveways, each up to 12 feet wide, for circular driveways and other special circulation and parking.
    • For nonresidential lots, no more than two driveways may be used per 100 feet of frontage.
    • Nonresidential driveways must be at least 12 feet apart and at least 3 feet from a side property line.
    • Nonresidential driveways may be no more than 35 feet wide, subject to the stated curb-return exception.
    • Additional corner and frontage marking requirements apply.

    residential access driveways: <= 1 per residential lot (lots with frontage greater than 100 feet may provide two driveways) · residential driveway width: <= 20 feet at street lot line (frontage greater than 100 feet permits two driveways up to 12 feet each) · nonresidential driveways: <= 2 per 100 feet of frontage · nonresidential driveway separation: >= 12 feet · side property line clearance: >= 3 feet · nonresidential driveway width: <= 35 feet (may be increased by permissible curb return radii)

    “Adequate ingress and egress to and from all uses shall be provided as follows:”
  • Permit feesPublished (with conditions)

    Building permits and related building inspections, plan reviews, deposits, and state fees administered by Box Elder County Buildings and Grounds.

    • The consolidated county fee schedule is effective 01/01/2026.
    • The building permit fee adopts the State ICC Fee Structure rather than stating one flat county amount.
    • Dwellings have a plan-review fee of 50% of the building permit fee; commercial projects have a plan-review fee of 65%; miscellaneous plan review is 50%.
    • Dwelling deposits are $1,700 and commercial deposits are $2,500.
    • A state fee of 1% of the building permit fee applies.
    • Mobile inspection, solar inspection, generator/battery, pump, meter-upgrade, travel, and other listed charges may apply as separately scheduled.

    building permit fee: Adopt State ICC Fee Structure · dwelling plan review: 50 percent of building permit fee · commercial plan review: 65 percent of building permit fee · miscellaneous plan review: 50 percent of building permit fee · dwelling deposit: 1700 USD · commercial deposit: 2500 USD · state fee: 1 percent of building permit fee

    “CONSOLIDATED FEE SCHEDULE EFFECTIVE 01/01/2026 [...] Building Permit Fee | Adopt State ICC Fee Structure [...] Dwellings | 50% of Building Permit Fee Commercial | 65% of Building Permit Fee Misc. | 50% of Building Permit Fee [...] Dwellings | $1,700.00 Commercial | $2,500.00 State Fee | 1% of Building Permit Fee”
  • Permit processPublished (with conditions)

    Building permit applications and inspections administered by Box Elder County.

    • Applicants must submit all required documents.
    • The county states that standard processing takes 7 to 10 business days after receiving all required documents.
    • The county contacts applicants if additional information is required, so a valid email address and phone number should be provided.
    • Inspections require 24-hour notice.
    • A building permit application and supporting documents are available through the county page.

    standard processing time: 7 to 10 business days (after the office receives all required documents) · inspection notice: >= 24 hours

    “Once our office receives all required documents, the standard processing time for all permits is 7 to 10 business days.”

Utah rules that apply here

  • Zoning districtsPartial

    County zoning districts and county land-use regulations in Utah, including unincorporated county areas.

    • A county must publish all of its land-use regulations on its website or by linking to a separate webpage or third-party website.
    • The state statute requires publication of county land-use regulations but does not itself list the actual zoning districts or boundaries.
    • County land-use regulations may apply to all or part of the unincorporated county area or to a designated mountainous planning district.
    “A county shall publish on the county's website: (i) all of the county's land use regulations; and (ii) a fee schedule that lists all of the county's fees related to a land use application, land use permit, or land use regulation, including development review fees and impact fees.”
  • Septic inspectionLimited

    Large Underground Wastewater Systems (LUWDS) operating under Utah operating permits.

    • The annual inspection-report requirement applies to LUWDS operating permits.
    • The report is due August 1st of every year.
    • The source does not establish that the same annual inspection requirement applies to every residential or small onsite wastewater system.

    inspection report frequency: annual · annual inspection report due date: August 1

    “All Large Underground Wastewater Systems (LUWDS) have a responsibility under their Operating Permits to submit an Annual Inspection Report, due August 1st of every year.”
  • Well permitRequired

    Water well construction and regulated well activity in Box Elder County under Utah State Engineer and Division of Water Rights rules.

    • A valid water right must be in place before constructing a shallow water well and beneficially using groundwater.
    • A Start Card is issued upon approval of the water right and is essentially the permit to construct the well.
    • Shallow water wells and associated regulated activities must comply with R655-4 UAC and be completed by a licensed driller or licensed shallow water well constructor.
    • The State Engineer regulates all water wells regardless of depth; the prior exemption for wells 30 feet deep or less was removed.
    • A well owner may drill the owner's own shallow water well only if the owner has a valid water right and obtains a shallow water well constructor license.
    • A pump installer license is not required for a person installing or repairing a well pump on the person's own property for the person's own use.

    well-depth former exemption: <= 30 feet (The exemption from regulation was removed effective under the revised rules.) · administrative rules effective date: 2022-07-22

    “A Start Card is issued upon approval of the water right, which is essentially the permit to construct the well.”
    2 more reviewed findings on this topic
    • Required — Domestic and other water-production wells in Box Elder County, under Utah State Engineer and Division of Water Rights regulation.
      “A Start Card is issued upon approval of the water right, which is essentially the permit to construct the well.”
    • Required — Construction of shallow water wells in Utah.
      “A Start Card is issued upon approval of the water right, which is essentially the permit to construct the well.”
  • Short-term rentalsLimited

    Short-term rentals operated within Utah municipalities.

    • A municipality may require the owner or lessee to obtain a business license or other permit before operation.
    • A municipality may regulate short-term rentals through municipal ordinances and zoning requirements.
    • A municipality may not enact or enforce an ordinance prohibiting an individual from listing or offering a short-term rental on a short-term-rental website.
    • A municipality may not use an ordinance prohibiting the act of renting a short-term rental to punish an individual solely for listing or offering it on a short-term-rental website.
    • The statute does not establish that short-term rentals are allowed in every zone or municipality.
    “A municipality may adopt an ordinance requiring the owner or lessee of a short-term rental to obtain a business license or other permit from the municipality before operating a short-term rental within the municipality.”
  • Campground & park staysLimited

    Tiny houses in Utah RV parks; the state source also states that tiny-home permission in a particular area depends on local land-use regulations.

    • The tiny house may be allowed in an RV park only with the required data plate or permanent label and either Recreational Vehicle Industry Association certification or qualified third-party inspection certification.
    • The RV park must comply with applicable building, zoning, electrical, health, fire codes and local ordinances.
    • Outside RV parks, whether a tiny home is permitted depends on local land-use regulations and whether the structure is treated as a primary dwelling, accessory dwelling, modular unit, or manufactured home.

    maximum floor area for tiny house under Rule R392-301: <= 400 square feet (The rule defines tiny house for purposes of the rule; this does not establish statewide land-use permission outside RV parks.)

    “A recreational vehicle or a tiny house may be allowed in a recreational vehicle park only if:”
    One more reviewed finding on this topic
  • county zoning authorityGeneral

    Utah counties may enact land-use controls, including zoning ordinances, for land in unincorporated areas statewide.

    • The authority is subject to Utah Code Section 17-79-101(4) and Section 11-41-103.
    • The statutory grant expressly covers the unincorporated area of a county and a designated mountainous planning district.
    • The quoted provision lists uses, density, open spaces, structures, and buildings among the subjects of permissible land-use controls.
    “Subject to Subsection (4) and Section 11-41-103, to accomplish the purposes of this chapter, a county may enact all ordinances, resolutions, and rules and may enter into other forms of land use controls and development agreements that the county considers necessary or appropriate for the use and development of land within the unincorporated area of the county or a designated mountainous planning district”
  • county building authorityGeneral

    Utah counties may adopt and enforce building regulations and require building permits for construction in unincorporated areas statewide.

    • The general county building-regulation authority applies outside the limits of cities and towns.
    • Local regulations may not conflict with general laws.
    • Under Utah Code Section 17-79-901, erecting, constructing, reconstructing, altering, or changing the use of a building or other structure within a county requires approval of a building permit.
    • A county may not issue a building permit unless the plans fully conform to regulations then in effect.
    • The county permit authority is subject to the State Construction and Fire Codes Act and other statutory limitations.
    “A county may make and enforce within the limits of the county, outside the limits of cities and towns, all local, police, building, and sanitary regulations that are not in conflict with general laws.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Tiny homes — Occupancy of tiny homes in unincorporated Box Elder County.
  • Manufactured homes — Occupancy of manufactured homes in unincorporated Box Elder County, distinct from the Code's provisions expressly addressing mobile homes and recreational vehicles.
  • Building in a floodplain — Development activities and Floodplain Development Permit requirements governed by Box Elder County Chapter 5-4, Flood Damage Prevention.

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Box Elder County, Utah

Is Box Elder County a good place to live off-grid or homestead?

Box Elder County scores 41/100 on the Bolthole Index, a marginal county profile. Its strengths: manageable long-term carry cost and sparse surroundings — about 107 people within 15 miles. Watch-outs: weak self-sufficiency basics: only 12.4″ of rain a year, in severe drought 30.3% of years and elevated mid-century heat, water, rain, or wildfire exposure.

Do you need a building permit in Box Elder County, Utah?

Box Elder County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Bear River Health Department. Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

Can you live in an RV or tiny home on your land in Box Elder County?

Living in an RV on your own land in Box Elder County is limited to specific cases: Occupancy of recreational vehicles on lots or parcels within unincorporated Box Elder County Recreational vehicles may not be used as permanent living. Occupancy is limited to 14 consecutive days and no more than 90 total days in a calendar year. Confirm with the county before relying on it.

How much does land cost in Box Elder County, Utah?

Land in Box Elder County runs about $2,495 per acre, based on the latest county data.

What is the water situation in Box Elder County?

Box Elder County gets about 12.4" of rain a year, with severe drought in roughly 30.3% of years.

How remote is Box Elder County?

A typical private-land location has about 107 people within 15 miles and 2,777,364 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

How Box Elder compares in Utah

Compare side-by-side →See all 29 Utah counties ranked →