Bolthole Index

Carbon County, Utah

Building permits, zoning and land rules in Carbon County, Utah

62Index Score / 100
#1 of 29 in Utah

Carbon County, Utah requires a building permit before most construction begins, and the Carbon County Building Department issues building permits and inspections for the whole county, cities included.12 Zoning approval is separate: the county zones unincorporated land, while East Carbon, Helper, Price, Scofield and Wellington have their own zoning layers.3 Septic permits for any property without public sewer, city or not, come from the Southeast Utah Health Department.4

At a glance

Building permit
Required for most construction and regulated trade work1
Zoning
County zoning applies in unincorporated Carbon County3
Septic
Health Department approval and permit required where sewer is unavailable456
RV living
RV courts allowed in approved mountain recreation developments; individual-parcel living not confirmed78
Tiny home
Parcel-specific zoning permission not confirmed; ask Planning & Zoning98
Owner-builder
Allowed for qualifying personal, noncommercial projects with county certification10
Well
A water right and State Engineer permission are required before drilling11

Who to call

Building permits

Carbon County Building Department

Building permits and inspections in Carbon County

(435) 636-3260

planning@carbon.utah.gov

751 E 100 N Ste 2600 (Second Floor) Price, UT 84501

Planning & zoning

Carbon County Planning & Zoning

Subdivision, planning, and zoning permit applications

(435) 636-3260

planning@carbon.utah.gov

Septic permits

Southeast Utah Health Department

Onsite wastewater site review, design approval, permits, and inspections

435-637-3671

149 East 100 South PO Box 800 Price, UT 84501

Roads & driveways

Carbon County Road Department

County-road maintenance and road encroachment permits

(435) 636-3268

road@carbon.utah.gov

2660 Airport Road Price, UT 84501

Contact details are copied from each office’s official page and were checked against it on October 9, 2026.

Off-grid gear

Going off-grid in Carbon 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 Carbon County, Utah?

Yes. Carbon County requires the owner or authorized agent to obtain a permit before covered construction, enlargement, alteration, repair, movement, demolition, occupancy changes, or regulated electrical, gas, mechanical, and plumbing work begins.1 Listed exemptions include qualifying agricultural buildings, residential sheds and structures under 200 square feet, fences no higher than 7 feet, retaining walls no higher than 4 feet, sidewalks, driveways, finish work, shallow prefabricated pools, playground equipment, and window awnings.1

A driveway may be exempt from the building permit while still requiring a separate road encroachment permit where it connects to a county road.12 An agricultural structure used solely for agriculture and not for human occupancy may qualify for an exemption from the State Construction Code, but Carbon County must approve the exemption request and plumbing, electrical, or mechanical permits may still be required.13 Ask the Building Department before relying on an exemption.14

Who issues building permits in Carbon County, and how do you reach them?

The Carbon County Building Department issues building permits and conducts inspections from the County Building & Planning Office in Price.14 Applications may be made online or in person, and the county requires owner and project details, the parcel number, contractor information, an owner-builder form when applicable, a project description, a complete PDF plan set, and supporting documents.15 Residential review can take up to 14 business days and commercial review up to 21 business days after all required documents arrive.15

Carbon County lists the 2024 International Building Code, 2021 International Residential Code, residential 2020 NEC, commercial 2023 NEC, and 2024 plumbing, mechanical, fire, energy, and existing-building codes among the codes it enforces.2 New-home inspections include foundation, under-floor utilities, shear-wall fasteners, stucco lath and flashing when applicable, frame and trade rough-ins, utility connections, and a final inspection for occupancy; schedule inspections 24–72 hours ahead.16

New-construction and solar applications carry a nonrefundable $250 deposit credited toward the permit.17 Building permits come from the county even inside the cities, but work in East Carbon, Helper, Price City, Wellington, or Scofield Town also requires separate city zoning approval, which the county does not grant; an application for unincorporated land instead needs a signed Road Encroachment Agreement submitted to the County Road Shop.1

Does Carbon County, Utah have zoning?

Yes. Carbon County Planning & Zoning administers zoning for unincorporated property, while cities and towns administer their own zoning ordinances; building permits and septic permits are handled separately from zoning approval.3 The county's mapping service publishes separate layers for County Zoning and the zoning of East Carbon, Helper, Price, Scofield, and Wellington, so first identify which jurisdiction controls the parcel.18 For unincorporated land, permission depends on the parcel location, zoning district, and proposed use, and some uses require a conditional-use permit.19

Carbon County has district-specific lot and building standards rather than one confirmed countywide minimum.20 Cabins in the MR and WS zones require at least 20,000 square feet of natural buildable site with slopes below 30%.21 A manufactured home cannot be excluded from a zone where a single-family residence is permitted, but it needs a compliant permanent foundation and must meet applicable land-use rules, building codes, and covenants.22 A qualifying internal accessory dwelling unit is permitted within a primary home in an area zoned primarily for residential use, subject to building, health, fire, and allowed county conditions; that rule does not authorize every detached accessory dwelling.23

How do septic permits work in Carbon County?

Where public sewer is unavailable, an off-grid home or business using an onsite wastewater system needs design approval and a septic permit from the Southeast Utah Health Department, whether the parcel is unincorporated or inside a city; the available sources do not establish that septic is the only regulated sanitation option.6 Start with a site and soil evaluation by a Level 1 or higher Onsite Wastewater Professional, submit the permit application, and obtain Health Department approval of the design before installation.5 The approved design must remain at the site during installation.5

Do not cover system components before the Health Department's final inspection.24 The tank must be filled to the distribution-box outlet 24 hours before that inspection, and the permit fee must be paid first.24 Only about 9.5% of county soils are rated without severe limitations for a conventional drain field, so the soil evaluation is a major feasibility checkpoint before buying or choosing a homesite.25

Can you live in an RV or tiny home in Carbon County?

Carbon County allows recreational-vehicle courts within approved mountain recreation developments, subject to county design and improvement standards.7 Camping and picnic facilities are also listed uses in those developments, which require approval and supporting water, sewage, and improvement plans.26 We could not confirm permission for long-term RV living or ordinary camping on an individual parcel outside that setting; ask Carbon County Planning & Zoning about the parcel, stay length, and utility plan.8

Utah's RV-park rule governs temporary living quarters in qualifying RV parks and requires compliance with local zoning, building, health, fire, and wastewater rules; it does not authorize RV living on every private parcel.27 A qualifying tiny house may be allowed in an RV park under that framework, while permission outside a park depends on local land-use classification.9 A wheeled tiny house, manufactured home, and internal accessory dwelling are different categories.

Building a home in Carbon County: what are the steps?

  1. Ask Carbon County Planning & Zoning to confirm the parcel's district, residential use, setbacks, lot requirements, and any conditional-use review.19
  2. Confirm legal parcel status; every split of unincorporated property requires a recorded subdivision plat or agricultural waiver.28 An agricultural waiver requires qualifying Farmland or Greenbelt land and lots of at least 5 acres, but a waived parcel cannot be used for a home until a formally approved subdivision plat is recorded.29
  3. Secure water and wastewater approvals: show paid water-connection fees where served, or obtain State Engineer approval for a spring or well; show sewer approval where served, or obtain Health Department septic approval.3031
  4. Submit the complete building application and plans, plus owner-builder certification if you qualify.1510
  5. For unincorporated land, send the signed Road Encroachment Agreement to the County Road Shop.1
  6. Obtain the permit before work begins and schedule required inspections.1

What should you check before buying land in Carbon County?

Check the zoning district, legal access, parcel-division history, water source, sewer availability, and septic feasibility before closing. Carbon County requires a county-road encroachment permit for a driveway attaching to a county road, while a driveway connecting to a state highway requires a UDOT conditional access permit.1232 A domestic well needs a valid water right and State Engineer permission before drilling.11

Carbon County averages about 14.6 inches of precipitation a year, and severe drought has occurred in about 31.3% of years, making a documented water source especially important.3334 About 36.5% of the county has slopes of 15% or less, and only about 9.5% of soils lack severe conventional-drain-field limitations, so verify the actual building envelope and soil evaluation rather than relying on acreage alone.3525 Ask Building & Planning which office reviews floodplain development for the parcel because a county development rule was not confirmed.8

Watch-outs

  • New-home inspections must be booked 24–72 hours ahead, and a request made after 3 p.m. is not guaranteed for the next day.16
  • A building-permit exemption for the driveway does not replace the county-road encroachment permit when the driveway connects to a county road.12
  • An agricultural waiver does not make a divided parcel residentially buildable; Carbon County will not issue a building permit there until a formally approved subdivision plat is recorded.29
  • Outside an approved mountain recreation development, long-term RV occupancy, temporary camping, tiny-home occupancy, minimum dwelling size, and floodplain development requirements remain parcel questions for Carbon County Planning & Zoning.78

Sources

  1. Building Permits – Carbon County Utah, quoted and re-checked
  2. Building – Carbon County Utah, quoted and re-checked
  3. Planning & Zoning – Carbon County Utah, quoted and re-checked
  4. Building Permits – Carbon County Utah, quoted and re-checked
  5. Building Permits – Carbon County Utah, quoted and re-checked
  6. Onsite Wastewater (Septic) - Southeast UT Health, quoted and re-checked
  7. Land Use Applications – Carbon County Utah, quoted and re-checked
  8. Carbon County Planning & Zoning (carbon.utah.gov)
  9. OPRO Accessory Dwellings (ADU's) and other dwelling types (Utah statewide rule), quoted and re-checked
  10. Building Applications / Agreements – Carbon County Utah, quoted and re-checked
  11. Water Well Drilling Information, quoted and re-checked
  12. Road Encroachment Permits – Carbon County Utah, quoted and re-checked
  13. Building Permit Exemption Request – Carbon County Utah, quoted and re-checked
  14. Carbon County Building Department (carbon.utah.gov)
  15. Building Permits – Carbon County Utah, quoted and re-checked
  16. Building – Carbon County Utah, quoted and re-checked
  17. Building Permits – Carbon County Utah, quoted and re-checked
  18. Planning & Zoning – Carbon County Utah, quoted and re-checked
  19. Land Use Applications – Carbon County Utah, quoted and re-checked
  20. Planning & Zoning – Carbon County Utah, quoted and re-checked
  21. Building Permits – Carbon County Utah, quoted and re-checked
  22. Utah Code Title 17, Chapter 80, quoted and re-checked
  23. Accessory Dwellings (ADU's) and other dwelling types, quoted and re-checked
  24. Onsite Wastewater Process and Guidance, quoted and re-checked
  25. 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
  26. County Land Use Applications, quoted and re-checked
  27. Utah Administrative Code Rule R392-301, Recreational Vehicle Parks (Utah statewide rule), quoted and re-checked
  28. Land Use Applications – Carbon County Utah, quoted and re-checked
  29. Land Use Applications – Carbon County Utah, quoted and re-checked
  30. Building Permits – Carbon County Utah, quoted and re-checked
  31. Building Permits – Carbon County Utah, quoted and re-checked
  32. Conditional Access Permit (Utah statewide rule), quoted and re-checked
  33. Annual precipitation: Bolthole Index county data
  34. Share of years in severe drought: Bolthole Index county data
  35. Share of land at 15% slope or less: Bolthole Index county data

Written October 9, 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, Carbon County requires a building permit for a home.

RuleCarbon CountyEmery CountyDuchesne CountySanpete CountyWasatch CountyUintah CountyUtah County
Building permitRequiredRequiredRequiredRequiredRequiredRequiredRequired
County zoningYesYesYesYesYesYesYes
Septic permitsSoutheast Utah Health DistrictSoutheast Utah Health Dept.TriCounty Health Dept.Central Utah Public Health Dept.County Health Dept.TriCounty Health Dept.UT County Health Dept.

County locator

Carbon County in Utah

62
County map
Carbon County highlighted among the Utah counties · colored by Index score

How Carbon County scores

Seclusion69100% ev.
Self-Sufficiency39100% ev.
Admin Boringness40100% ev.
Durability64100% ev.
Property Autonomy60100% ev.
Carry Cost83100% 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 →

$284kTypical home
0.6%Property tax
$2,617Land / acre
14.6"Annual rain
31.3% of yrsSevere drought
1.2 / yr (+1.2)Mid-century 100°F days
28.3 daysMid-century dry spell
1" (+6.7%)Mid-century 1-day rain
1.18×Wildfire change factor
100%Forward climate coverage
$944Home insurance / yr
4.3% / yrInsurance growth
1.4%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
1,607Radius comparison (15 mi)
13.9People / sq mi
48.2%Federal land
36.5%Land at 15% slope or less
9.5%Soils rated "not limited" for septic (strict USDA rating)
73,707 acWorkable land screen
40.5%Wooded land
14.5 tonsBiomass / forest ac
45.2°FAvg temp

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Cities and towns in Carbon 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: East Carbon · Helper · Price · Town of Scofield

Answers from the rulebook for Carbon County

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

Carbon County rules

  • Building permitRequired

    Construction, enlargement, alteration, repair, movement, demolition, occupancy change, and regulated electrical, gas, mechanical, or plumbing work in Carbon County; the County Building Department states it serves all unincorporated and incorporated areas.

    • The owner or authorized agent must apply to the building department and obtain the required permit before covered work begins.
    • Exemptions listed by the County include agricultural buildings meeting Utah Agricultural Waiver requirements; residential sheds and structures under 200 square feet; fences not over 7 feet high; retaining walls not over 4 feet high from bottom of footing to top of wall; sidewalks and driveways; painting, papering, tiling, carpeting, cabinets, countertops, and similar finish work; prefabricated swimming pools less than 24 inches deep; swings and playground equipment; and window awnings.
    • Failure to obtain a permit before beginning work results in a penalty and fine.
    • Permit reviews can take up to 14 business days for residential projects and 21 business days for commercial projects after required documents are received.
    • New construction and solar building permit applications require a non-refundable $250 deposit as of January 1, 2025, applied as a credit toward the permit.
    • Applications in East Carbon, Helper, Price City, Wellington, or Scofield Town require proof of city zoning approval.
    • Unincorporated-area applications also require a signed Road Encroachment Agreement submitted to the County Road Shop.
    • Where an area is not served by sewer, Individual Wastewater septic approval and a permit must be obtained from the Southeast Utah Health District.

    residential permit review time: <= 14 business days (after all required documents are received) · commercial permit review time: <= 21 business days (after all required documents are received) · new construction and solar application deposit: 250 USD (non-refundable; applied as a credit toward the permit; stated as of January 1, 2025)

    “shall first make application to the building department and obtain the required permit.”
  • Owner-builder exemptionConditional

    A property owner serving as their own contractor on a Carbon County construction project.

    • The project must be for personal, non-commercial, and non-public use.
    • The property owner must complete the Owner Builder Certification Agreement to comply with the Construction Trades Licensing Act.
    • The County building permit page requires a signed and notarized Owner/Builder Certification Form if the applicant is a do-it-yourselfer.
    • The owner-builder form does not eliminate the underlying building-permit requirement; the County states that covered work must first obtain the required permit.
    “This form must be completed if a property owner intends to serve as their own contractor on a project that will be used for personal, non-commercial and non-public use.”
  • Building code adoptedAdopted (with conditions)

    Building-code enforcement by the Carbon County Building Department in both unincorporated and incorporated areas of Carbon County.

    • The County Building Department serves all unincorporated and incorporated areas of the county.
    • The page states that plan review and field inspections ensure compliance with adopted building codes.
    • The enforced codes listed are the 2024 International Building Code, including Appendices D and J; the 2021 International Residential Code; Residential 2020 NEC; Commercial 2023 NEC; and 2024 IPC, IMC, IFC, IECC, and IEBC.
    • The page does not state an effective or adoption date for this listed code set.
    • Separate zoning approval is required for building in East Carbon, Helper, Price City, Wellington, or Scofield Town.

    building code: 2024 International Building Code, including Appendices D & J · residential code: 2021 International Residential Code · electrical code: Residential 2020 NEC; Commercial 2023 NEC · other enforced codes: 2024 IPC, 2024 IMC, 2024 IFC, 2024 IECC, 2024 IEBC

    “The purpose of the Building Department is to protect the safety and health of the citizens of Carbon County by doing plan review and field inspections to ensure compliance with adopted building codes. The County Building Department serves all unincorporated and incorporated areas of the county. [...] What codes are enforced? 2024 INTERNATIONAL BUILDING CODE (INCL. APPENDICES D & J) 2021 INTERNATIONAL RESIDENTIAL CODE RESIDENTIAL 2020 NEC, COMMERCIAL 2023 NEC 2024 IPC, 2024 IMC, 2024 IFC, 2024 IECC, 2024 IEBC”
  • InspectionsRequired

    New residential construction inspected by the Carbon County Building Department in both unincorporated and incorporated areas of Carbon County.

    • Foundation inspection is required for footings, walls, and structural slabs before pouring concrete.
    • Concrete slab or under-floor inspection includes electrical and plumbing inspection before concrete.
    • Shear wall fasteners must be inspected before covering sheathing.
    • Lath and flashing inspection applies to stucco before covering.
    • A 4-way inspection covers frame, electrical, plumbing, and mechanical work.
    • Sheetrock inspection is required only if there is living space above the garage.
    • Utility-connection inspections cover the gas meter and power.
    • Final inspection is for occupancy.
    • Inspections must be scheduled at least 24-72 hours in advance by calling (435) 636-3260.
    • Next-day inspections are not guaranteed if requested after 3 pm.

    inspection scheduling notice: >= 24 hours (The page states a 24-72 hour advance notice period.) · inspection scheduling notice: <= 72 hours (The page states a 24-72 hour advance notice period.) · inspection scheduling phone: (435) 636-3260

    “What inspections will I need for New Residential? [...] Please c all at least 24-72 hours in advance to schedule inspections @ (435) 636-3260.”
  • County-wide zoningPresent (with conditions)

    Zoning and conditional-use regulation for property in the unincorporated portions of Carbon County.

    • The county page expressly limits the land-use application information to property in the unincorporated portions of the County.
    • A proposed use is evaluated by its location, zoning district, and whether the use is allowed.
    • Some land uses require a Conditional Use Permit approved and issued by Carbon County.
    • Conditional-use applications require submission to the Planning Department at least two weeks before the first Tuesday of the month or as required by the Zoning Administrator.
    • The application lists a $300.00 application fee, a 10-day public notice requirement, and additional fee rules based on the engineer’s estimate of project cost.

    conditional use application fee: 300 USD (If the computed fee exceeds $300.00, the additional amount is due before the permit is issued.) · public notice: 10 days

    “This is determined by where the project is to be located, which zoning district it is in, and whether such uses are allowed or not.”
  • Local zoningVaries (with conditions)

    The countywide zoning picture, aggregated across Carbon County zoning and the zoning administered by incorporated municipalities and town jurisdictions shown in the county’s official planning and zoning materials.

    • Carbon County maintains and enforces its county zoning and development code.
    • The county GIS maintains zoning maps for both unincorporated and incorporated areas.
    • The countywide conclusion aggregates different local zoning areas and does not mean Carbon County administers every municipal or town ordinance.
    • Specific permitted uses and approvals depend on the applicable zoning district and local authority.
    “Layers: County Zoning (3) East Carbon Zoning (4) Helper Zoning (5) Price Zoning (6) Scofield Zoning (7) Wellington Zoning (8)”
  • Zoning districtsPublished (with conditions)

    Carbon County zoning and development-code administration, including county zoning and mapped municipal zoning layers shown in the county's official GIS service.

    • The county's official planning page states that it maintains and enforces the county zoning and development code.
    • The official GIS zoning service separately lists County Zoning, East Carbon Zoning, Helper Zoning, Price Zoning, Scofield Zoning, and Wellington Zoning; incorporated municipalities may administer their own local rules.
    • Use-specific permissions may require a conditional-use permit depending on the zoning district and proposed use.
    “Layers: County Zoning (3) East Carbon Zoning (4) Helper Zoning (5) Price Zoning (6) Scofield Zoning (7) Wellington Zoning (8)”
  • Minimum lot sizeDistrict specific (with conditions)

    Lot-size requirements for zoning districts in the unincorporated portions of Carbon County.

    • The county states that its zone information chart captures requirements for lot sizes and allowed building sizes.
    • The reviewed page did not provide the numeric lot-size table or identify a single countywide minimum; the applicable zone must be determined for the parcel.
    “The county maintains a zone information chart capturing requirements for lot sizes, and allowed building sizes.”
    One more reviewed finding on this topic
    • District specific (with conditions) — Cabins in the MR and WS zoning districts in Carbon County
      “Cabins in the MR and WS zones require a natural build-able site of 20,000 square feet having slopes less than 30 percent”
  • Living in an RVAllowed (with conditions)

    Recreational vehicle courts in a Mountain recreation development in unincorporated Carbon County.

    • The use is limited to a Mountain recreation development.
    • Mountain recreation vehicle courts are subject to all design and improvement standards adopted by the County.
    • The cited page does not establish permission for individual long-term RV occupancy outside an approved Mountain recreation development.
    “1. Mountain recreation vehicle courts subject to all design and improvement standards for such uses as adopted by the County.”
  • Camping on your landLimited

    Camping and picnic facilities within a Carbon County mountain recreation development in the unincorporated county.

    • Mountain recreation development approval is required.
    • Mountain recreation vehicle courts must satisfy County design and improvement standards.
    • The development must provide required water rights, water supply, sewage disposal, and other required documents.
    • Required improvements may include streets, parking, drainage, water and sewer mains, domestic sewage disposal facilities, fire hydrants, utilities, landscaping, common facilities, and lighting.
    • The source states that inapplicable improvements may be waived by the County.
    “Uses permitted in a Mountain recreation development shall be limited to the following: [...] 5. Camping and picnic facilities.”
  • Who permits septicLocal (with conditions)

    Individual wastewater and onsite septic systems serving property in Carbon County where sewer is unavailable

    • Carbon County states that septic approval and a permit must be obtained from the Southeast Utah Health District when an area is not served by sewer.
    • The Health District reviews site and soil evaluations, approves designs, conducts inspections, and issues operating permits.
    • The Health District is a multi-county health district; this claim identifies it as the administering authority for Carbon County septic systems.
    “Onsite wastewater systems are privately owned personal sewer systems that are installed on private land to serve individual homes and businesses in areas where public sewer is not available. A permit and plan design approval is required.”
  • Septic permitRequired

    Individual wastewater systems in Carbon County in areas not served by sewer

    • A septic system permit application is required.
    • A site and soil evaluation must be performed by a Level 1 or higher Onsite Wastewater Professional.
    • Environmental Health staff schedule a site visit and review the evaluation.
    • The onsite wastewater design must be submitted to and approved by the health department before installation begins.
    • The approved design must remain onsite during installation.
    • A final inspection and approval are not completed until the invoice is paid.
    • The 2024 fee schedule lists a Basic Septic Permit as including plan review, final inspection, and permit, with a $354.00 fee plus a $40.00 state fee.

    basic septic permit fee: 354 USD (2024 fee schedule) · state fee: 40 USD (additional fee listed in the 2024 fee schedule)

    “Step 2. Apply for a septic system permit. Submit your application by clicking here.”
  • Septic inspectionRequired

    Onsite wastewater systems in Carbon County regulated by the Southeast Utah Health District

    • Before any onsite system components are covered by barrier material or backfill, the health department must complete a final inspection.
    • The septic tank must be filled to the outlet into the distribution box 24 hours before final inspection.
    • The septic permit fee must be paid before final inspection.
    • The Health District schedules a site visit to verify the site and soil analysis before issuing approval.

    tank fill timing before final inspection: 24 hours (tank must be filled to the outlet into the distribution box)

    “Before any components of the onsite system are covered by barrier material or back fill, a final inspection must be completed by the health department. The septic tank must be filled to the outlet into the distribution box, 24 hours prior to final inspection. The septic permit fee must be paid before final inspection.”
  • Off-grid sanitationLimited

    Onsite wastewater sanitation systems serving individual homes and businesses on private land in Carbon County where public sewer is unavailable.

    • The system must be an onsite wastewater system regulated by the Southeast Utah Health District.
    • A permit and plan design approval are required.
    • Carbon County states that where an area is not served by sewer, Individual Wastewater (septic) approval and a permit must be obtained from the Southeast Utah Health District.
    • The cited official sources establish requirements for onsite wastewater systems; they do not establish that every form of off-grid sanitation is limited exclusively to septic or rule out other regulated sanitation methods.

    permit: required · plan design approval: required · public sewer availability: not available (Requirement applies to onsite wastewater systems serving areas where public sewer is not available.)

    “Onsite wastewater systems are privately owned personal sewer systems that are installed on private land to serve individual homes and businesses in areas where public sewer is not available. A permit and plan design approval is required.”
  • Mandatory utility hookupSewer (with conditions)

    Building permit applications for properties in Carbon County requiring sewer connection from Price River Water Improvement District or Scofield Reservoir Special Service District

    • Carbon County requires proof of fees paid for sewer hookup from Price River Water Improvement District or the Scofield Reservoir Special Service District.
    • Where sewer is unavailable, the county requires Southeast Utah Health District approval and a septic permit instead.
    • The cited county pages do not establish that either sewer district serves every Carbon County parcel.
    “Sewer hook-up from PRWID (435-637-6350) or the Scofield Reservoir Special Service District (435) 636-3220 If area is not served by sewer, Individual Wastewater (septic) approval and permit must be obtained from Southeast Utah Health District (435) -637-3671”
    One more reviewed finding on this topic
    • Water (with conditions) — Building permit applications for properties in Carbon County requiring culinary-water connection from Price River Water Improvement District
      “Proof of fees paid: Water connection from PRWID (435) 637-6350 If central culinary water is not available, spring or well approval from Utah State Engineer, (435) 613-3750”
  • Agricultural exemptionConditional

    Agricultural structures seeking exemption from State Construction Code requirements through Carbon County's building department process.

    • The structure must be used solely in conjunction with agricultural use and must not be for human occupancy, or it must be no more than 1,500 square feet and used solely for the specified sales described in Utah Code Section 59-12-104(20).
    • Plumbing, electrical, and mechanical permits may still be required for work included in an otherwise exempt structure.
    • The applicant must complete and submit the County's Agricultural Permit Exemption Request.
    • The Building Department determines whether the parcel qualifies for the exemption.
    • The application asks whether the parcel is in an Agricultural Protection Area, within a city or town and less than 5 contiguous acres, or within a County-approved subdivision and less than 2 contiguous acres.
    • Any plumbing, electrical, or mechanical work is not exempted from permit requirements.
    • The County's page states that a structure over 1,500 square feet is not eligible for this exemption.

    maximum structure size for sales-related exemption: <= 1500 square feet (must be used solely for the type of sales described in Utah Code Section 59-12-104(20)) · city or town parcel screening threshold: < 5 contiguous acres · County-approved subdivision parcel screening threshold: < 2 contiguous acres

    “Except as provided in Subsection (11)(b), a structure used solely in conjunction with agriculture use, and not for human occupancy, [...] is exempt”
    2 more reviewed findings on this topic
    • Available (with conditions) — Agricultural structures seeking exemption from the State Construction Code through Carbon County’s building-permit exemption process
      “a structure used solely in conjunction with agriculture use, and not for human occupancy [...] is exempt from the requirements of the State Construction Code.”
    • Available (with conditions) — Agricultural land divisions seeking an agricultural waiver from the formal subdivision-plat requirement in unincorporated Carbon County
      “A plot plan/survey showing where the land is to be divided and the new acreage (lots must be 5 acres or more to qualify)”
  • Subdividing landRegulated (with conditions)

    Land divisions and subdivisions in the unincorporated portions of Carbon County.

    • Any property split or division requires a subdivision plat or agricultural waiver to be filed in the County Recorder’s office.
    • A subdivision plat must be filed before Carbon County will issue a building permit for a home created by the division, including a lot given to relatives.
    • For agricultural land divisions with land left over after creating a lot, an agricultural waiver must be applied for and approved; the land must be taxed as Farmland or Greenbelt to qualify for the state-law exemption.
    • The agricultural-waiver land may not be developed for a nonagricultural purpose for one year from issuance; if development is intended, a subdivision application and all subdivision requirements are required.
    • Subdivisions up to 9 lots may be approved by the Planning Commission, generally meeting the first Tuesday of each month at 4:30 PM.
    • Application must be submitted at least 2 weeks before the meeting.
    • Final subdivision application fee is $100 plus $50 per extra lot; plat review fee is $160 or actual cost per plat review.
    • A County-standards plat prepared by a licensed professional surveyor is required.
    • Water-connection evidence is required; outlying areas must satisfy Health Department cistern requirements, provide a Scofield water share and haul water, or satisfy the State Engineer for a well or spring.
    • A fire-flow test is required: 500 gallons per minute minimum, reducible to 250 gallons per minute when an automatic fire-sprinkling system is installed or the fire chief approves.
    • Sewer-connection evidence is required, or Southeastern Utah Health District approval of suitable private or central wastewater disposal when sewer is unavailable.
    • Access, private-drive installation or development agreement/financial guarantee, storm drainage plan, road-access approval, and noxious-weed-control approval are required.
    • After approval, the plat must be recorded at the applicant’s expense; final approval and recording should be expected to take 60 to 90 days before a building permit may be obtained.
    • Incomplete applications cannot be administered; incorrect information may cause review as a subdivision with public improvements.

    maximum lots for Planning Commission process: <= 9 lots · final subdivision application fee: 100 USD (plus $50.00 per extra lot) · plat review fee: 160 USD (or actual cost per plat review) · minimum fire flow: >= 500 gallons per minute (250 gallons per minute permitted with automatic fire sprinkling or fire-chief approval) · anticipated final approval and recording time: 60 to 90 days (before a building permit may be obtained)

    “unincorporated portions of the County. [...] anytime a property is split or divided, a subdivision plat or an agricultural waiver must be filed”
    One more reviewed finding on this topic
    • Regulated (with conditions) — Splitting or dividing property in the unincorporated portions of Carbon County
      “anytime a property is split or divided, a subdivision plat or an agricultural waiver must be filed”
  • Driveway accessLimited

    Residential driveways, parking areas, culverts, or other structures connecting to or affecting the shoulder of an existing county roadway.

    • A Class 1 Road Encroachment Permit applies to a driveway attaching to a county road.
    • The county page describes the permit as also covering excavations along, but not within, county roads.
    • Driveways are listed as exempt from a building permit, but a separate road encroachment permit may be required when the county roadway or shoulder is affected.
    “Class 1 Permit- For a driveway attaching to a county road. For excavations along, but not within, county roads. Connection of residential driveways, parking areas, culverts or other structures affecting or altering the shoulder of the existing county roadway.”
  • Permit feesPublished (with conditions)

    New construction and solar building permit applications administered by Carbon County.

    • The $250.00 amount is a non-refundable deposit applied as a credit toward the permit.
    • The page states the fee rule is applicable as of January 1, 2025.
    • The source also publishes a separate $30.00 non-refundable deposit for GIS mapping projects, applied as a credit toward the project.
    • Additional penalty fees may result from beginning work before obtaining the necessary permit.

    building permit application deposit: 250 USD (Non-refundable; applied as a credit toward the permit.) · GIS mapping project deposit: 30 USD (Non-refundable; applied as a credit toward the project.)

    “*As of January 1, 2025: New Construction and Solar building permit applications require a non-refundable $250.00 deposit that will be applied as a credit toward your permit. GIS mapping projects ordered require a $30.00 non-refundable deposit that will be applied as a credit toward your project.”
  • Permit processPublished (with conditions)

    Construction and regulated building-system work in Carbon County, including residential and commercial permit applications.

    • Some exemptions may apply; the county directs applicants to contact the Building Department for specifics.
    • Applications may be completed online or in person at 751 East 100 North, Suite 2600, Price, Utah 84501.
    • Permit reviews can take up to 14 business days for residential projects and 21 business days for commercial projects after all required documents are received.
    • Required materials include owner information, project address, parcel number, contractor license information, owner/builder form if required, project description, complete PDF plan set, and other required documents.
    • For unincorporated Carbon County, a signed Road Encroachment Agreement must also be submitted.
    • If no sewer is available, Individual Wastewater approval and permit must be obtained from Southeast Utah Health District.
    • In East Carbon, Helper, Price City, Wellington, or Scofield Town, proof of city zoning approval is required.

    residential permit review time: <= 14 business days (After all required documents are received.) · commercial permit review time: <= 21 business days (After all required documents are received.)

    “A building permit application may be completed online or in person at the County Building & Planning Office (751 East 100 North, Suite 2600, Price UT, 84501) Permit reviews begin when all required documents are received and can take up to 14 business days to complete for residential projects and 21 business days for commercial projects.”

Utah rules that apply here

  • Certificate of occupancyLimited

    Structures for which a certificate of occupancy is required by Utah Code § 15A-1-204.

    • The statutory trigger is expressly limited to certificates of occupancy required by Utah Code § 15A-1-204.
    • The cited provision does not establish that every construction project statewide requires a certificate of occupancy.
    “"Completed noncompliant structure" means a structure that was constructed and completed without: (i) obtaining a building permit; (ii) passing inspections; or (iii) obtaining a certificate of occupancy as required by Section 15A-1-204.”
  • Manufactured homesAllowed (with conditions)

    A manufactured home used as a residence in any Carbon County land-use zone or area where a single-family residence would be permitted.

    • The manufactured home must be attached to a permanent foundation in accordance with plans providing for vertical loads, uplift, lateral forces, and frost protection in compliance with the applicable building code.
    • All appendages, including carports, garages, storage buildings, additions, or alterations, must comply with the applicable building code.
    • The manufactured home must comply with all local land-use ordinances, building codes, and restrictive covenants applicable to a single-family residence within the zone or area.
    • Carbon County may not exclude the manufactured home from a zone or area where a single-family residence would be permitted.
    • Carbon County may not adopt or enforce an ordinance or regulation treating a proposed development that includes manufactured homes differently than one that does not include manufactured homes.
    • Carbon County may not reject a development plan based on the fact that the development is expected to contain manufactured homes.
    “A manufactured home may not be excluded from any land use zone”
    One more reviewed finding on this topic
    • Allowed (with conditions) — Placement and occupancy of a manufactured home in Carbon County wherever a single-family residence would be permitted, including applicable unincorporated county areas.
      “A manufactured home may not be excluded from any land use zone or area in which a single-family residence would be permitted, provided the manufactured home complies with all local land use ordinances, building codes, and any restrictive covenants, applicable to a single-family residence within that zone or area.”
  • Accessory dwellingsAllowed (with conditions)

    One internal accessory dwelling unit within a primary dwelling in an area of Carbon County zoned primarily for residential use.

    • The unit must comply with all applicable building, health, and fire codes.
    • A county may prohibit a separate utility meter.
    • A county may require design that does not change the appearance of the primary dwelling as a single-family dwelling.
    • A county may require one additional on-site parking space, subject to the statutory exception when the county land-use ordinance requires four off-street parking spaces, and may require replacement of parking spaces removed from a garage or carport when the unit is created there.
    • A county may prohibit creation within a mobile home.
    • A county may require the owner to obtain a permit or license for renting the unit.
    • A county may prohibit creation in a zoning district covering an area equivalent to 25% or less of the total unincorporated area zoned primarily for residential use, except that newly constructed units with final plat approval dated on or after October 1, 2021, and complying with applicable land-use regulations may not be prohibited under that exception.
    • A county may prohibit creation when the primary dwelling is served by a failing septic tank.
    • A county may prohibit creation when the lot is 6,000 square feet or less.
    • A county may prohibit rental for less than 30 consecutive days.
    • A county may prohibit rental when the unit is in a dwelling not occupied as the owner’s primary residence.
    • The statutory permission is for an internal accessory dwelling unit within a primary dwelling, not every detached or external accessory dwelling structure.

    minimum rental period: >= 30 consecutive days (A county may prohibit rental or offering the rental for a period of less than 30 consecutive days.) · small-lot threshold: <= 6000 square feet (A county may prohibit creation if the lot containing the primary dwelling is 6,000 square feet or less.) · unincorporated residential zoning restriction area: <= 25 percent of total unincorporated area zoned primarily for residential use (Newly constructed units with final plat approval dated on or after October 1, 2021, and complying with applicable land-use regulations may not be prohibited under this exception.)

    “the use of an internal accessory dwelling unit is a permitted use”
    2 more reviewed findings on this topic
    • Allowed (with conditions) — An internal accessory dwelling unit within a detached, single-family primary dwelling occupied as the owner's primary residence in a Carbon County area zoned primarily for residential use, for a long-term rental of at least 30 consecutive days.
      “State law provides that an IADU is a permitted use in any area zoned primarily for residential use in a county or municipality, subject to certain restrictions.”
    • Limited — One internal accessory dwelling unit within a primary dwelling in county areas of Utah zoned primarily for residential use.
      “In any area zoned primarily for residential use: (a) the use of an internal accessory dwelling unit is a permitted use;”
  • Well permitRequired

    Water wells, including domestic wells, constructed for property in Carbon County

    • A valid water right must exist before construction and beneficial use of a shallow water well.
    • A Start Card issued after water-right approval is essentially the permit to construct the well.
    • Water well drillers cannot drill unless permission to drill has been obtained from the State Engineer.
    • Water production wells, including domestic wells, are regulated by the State Engineer.
    • Water-well construction must be performed by a currently licensed well driller; shallow water wells may also be constructed by a licensed shallow-water-well constructor.
    • The cited state sources state that the May 10, 2022 statutory change and July 22, 2022 rule revision removed the former exemption for wells 30 feet deep or less.

    former shallow-well exemption: removed (statutory change effective May 10, 2022; revised rules effective July 22, 2022) · non-production well depth regulated by State Engineer: > 30 feet (water production wells are regulated at any depth)

    “A shallow water well owner must have a valid water right to beneficially use groundwater from a shallow water well prior to well construction. [...] A Start Card is issued upon approval of the water right, which is essentially the permit to construct the well.”
    One more reviewed finding on this topic
    • 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.

  • Minimum dwelling size — Minimum floor area or dwelling-size requirement for residential dwellings in Carbon County, including unincorporated county zoning districts.
  • Setbacks — Building setbacks in Carbon County, Utah
  • Lot coverage — Lot coverage in Carbon County, Utah
  • Building height — Building height in Carbon County, Utah
  • Tiny homes — Occupancy of a tiny home as a dwelling in Carbon County, including unincorporated areas.
1 more unanswered
  • Building in a floodplain

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 Carbon County, Utah

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

Carbon County scores 62/100 on the Bolthole Index, a solid county profile. Its strengths: manageable long-term carry cost and sparse surroundings — about 1,607 people within 15 miles. Watch-outs: weak self-sufficiency basics: only 14.6″ of rain a year, in severe drought 31.3% of years and more administrative friction around building and land use.

Do you need a building permit in Carbon County, Utah?

Carbon County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Southeast Utah Health District (Southeast Utah 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 Carbon County?

Living in an RV on your own land in Carbon County is allowed: Recreational vehicle courts in a Mountain recreation development in unincorporated Carbon County. The use is limited to a Mountain recreation development. Mountain recreation vehicle courts are subject to all design and improvement standards adopted by the County. Confirm with the county before relying on it.

How much does land cost in Carbon County, Utah?

Land in Carbon County runs about $2,617 per acre, based on the latest county data.

What is the water situation in Carbon County?

Carbon County gets about 14.6" of rain a year, with severe drought in roughly 31.3% of years.

How remote is Carbon County?

A typical private-land location has about 1,607 people within 15 miles and 2,738,148 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

How Carbon compares in Utah

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