Bolthole Index

Boone County, Iowa

Building permits, zoning and septic rules in Boone County, Iowa

53Index Score / 100
#51 of 99 in Iowa

Unincorporated Boone County, Iowa requires a county zoning permit when a structure is built or enlarged on non-farming property; we could not confirm a separate county building-code permit1. Boone County Planning & Development issues that zoning permit and administers county zoning, which cities within the county do not use23. Septic permits come from Boone County Health & Sanitation45.

At a glance

Building permit
Zoning permit required for structures on non-farming property; no separate county building-code permit confirmed1
Zoning
County zoning applies in unincorporated areas, with an exemption for qualifying agricultural uses67
Construction permit fee
Zoning permit fees run from a $40 minimum to a $1,500 maximum; starting without a valid permit doubles the fee8
Septic permit
$250, including perc test, permit and final inspection59
Fixed tiny home
At least 23 feet wide and 700 square feet, on a permanent foundation, with a zoning permit10
RV living
Use as a dwelling requires a location approved under county zoning11
Private well
The Sanitation Department permits most wells; the listed well-permit fee is $10012
County-road entrance
A free entrance permit is required for a new or extended entrance on a county-maintained road13

Who to call

Building permits

Boone County Planning & Development

Building and zoning permits, subdivision review, and rural addressing for unincorporated Boone County

515-433-0550

201 State St., Second Floor, Boone, IA 50036

Online permits →

Zoning

Boone County Planning & Development

Boone County Zoning Ordinance administration and district information

Septic permits

Boone County Health & Sanitation

Septic-system permitting and inspection, time-of-transfer septic permits, and private-well programs

515-433-0506

201 State St., Second Floor, Boone, IA 50036

Roads & driveways

Boone County Engineer/Secondary Roads Department

County roads and bridges and contact for county-road entrance permits

515-433-0530

201 State St., First Floor, Boone, IA 50036

Online permits →

Floodplain permits

Boone County Engineer (Floodplain Administrator)

Floodplain-development permit administration

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 Boone County means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

Do you need a building permit in Boone County, Iowa?

Boone County requires a non-agricultural zoning permit whenever a structure is located, erected, moved, reconstructed, extended, enlarged, converted or structurally altered on non-farming property in unincorporated areas1. The county's own page does not describe this as a separate building-code permit, and we could not confirm a county building inspection or certificate-of-occupancy requirement, so ask Planning & Development whether the project needs anything beyond the zoning permit1415. Zoning permit fees run from a $40 minimum to a $1,500 maximum, and Boone County doubles permit fees when construction starts without a valid permit8.

Iowa's state building code includes the 2024 International Residential Code, but the listed circumstances for state inspection do not establish that Boone County adopted a separate county building code16. A person working on their own property is exempt from state contractor registration, but that exemption does not waive Boone County permits or other local requirements17. Boone County's agricultural zoning exemption requires the land and proposed buildings to be farm-related and dwelling occupants to be primarily engaged in agriculture7. The exemption covers zoning only; floodplain, county-tile, well, septic, addressing and driveway approvals may still apply7.

Who issues zoning and building-related permits in Boone County, Iowa?

Boone County Planning & Development is the first stop for rural building and zoning questions. The office is at 201 State St., Second Floor, Boone, IA 50036, and its phone number is 515-433-055015. Planning & Development administers the county's subdivision ordinance, zoning ordinance and uniform rural addressing ordinance15. Applications are available through the department's online Applications & Permits page15.

Separate offices handle site-specific approvals. Boone County Health & Sanitation handles septic permitting and inspection at the same courthouse address and can be reached at 515-433-050618. The Engineer/Secondary Roads Department is on the courthouse's first floor at the same street address and can be reached at 515-433-0530 for county-road access questions19. The Boone County Engineer also administers the county floodplain ordinance20. Ask Planning & Development which approvals apply to the parcel before finalizing a building plan.

Does Boone County, Iowa have zoning?

Yes. Boone County zoning applies only in unincorporated territory; incorporated cities may administer their own zoning63. The county has agricultural, residential, commercial, industrial and planned-development districts, so the parcel's mapped district controls21. Lot area, setbacks, building height and lot coverage vary by district and use22232425.

For example, an R-1 residential subdivision generally has 35-foot front and rear setbacks, a 12-foot side setback, 30% maximum lot coverage and a 35-foot maximum building height262524. Those figures are examples, not substitutes for checking the parcel's district and proposed use. Qualifying agricultural land and structures are exempt from county zoning while so used, subject to the ordinance's stated limits67. Land divisions and subdivisions are regulated in unincorporated Boone County, and Planning & Development administers the subdivision ordinance2715.

Who issues septic and well permits in Boone County, Iowa?

Boone County Health & Sanitation is the county septic authority4. The current county fee schedule lists a $250 package covering the perc test, permit and final inspection; system requirements can vary with the site evaluation and system type59. Only about 22.8% of county soils are rated without severe limitations for a conventional drain field, so arrange the site evaluation before fixing the house location28.

Where sewer service is unavailable, Boone County requires an approved septic system or other approved treatment process29. For a qualifying residential transfer, Iowa generally requires a certified septic inspection before ownership changes; the inspection remains valid for 2 years, subject to exceptions30. State and county authority overlap: county boards regulate private sewage systems, while the Iowa Department of Natural Resources retains concurrent authority31. Boone County's Sanitation Department issues permits for most private wells, and the listed well-permit fee is $10012.

Can you live in an RV or tiny home on land in Boone County?

A fixed tiny home used as a single-family dwelling in unincorporated Boone County must be at least 23 feet wide, contain at least 700 square feet and sit on a permanent foundation10. District-specific lot size and setbacks still apply2226. Recreational equipment or an RV-type unit used as a dwelling requires a location approved under county zoning, while commercial campgrounds and travel-trailer parks follow separate conditional-use rules11.

A mobile home may serve as a temporary residence during construction under an 18-month zoning permit32. Iowa prevents counties from rejecting a compliant home solely because it is manufactured, but allows the permanent-foundation, setback and minimum-area standards applied to a site-built home on the same lot33. Iowa also requires the county to allow at least one accessory dwelling unit where a single-family residence is allowed, subject to building rules and size limits34. Boone County separately limits certain granny flats or mobile homes used as second residences to one per residence for an immediate family member35.

Building a home in Boone County: the steps, in order

  1. Ask Boone County Planning & Development to confirm the parcel's zoning district, allowed residential use, lot-area rules, setbacks, height and lot coverage2122232425.
  2. Submit the zoning permit application before work begins; Boone County doubles permit fees when construction starts without a valid permit18.
  3. If the proposal needs conditional-use approval, allow for public hearings before the Zoning Commission and Board of Adjustment; applications are due 15 working days before the relevant meeting36.
  4. If public sewer is unavailable, obtain the $250 septic package covering the perc test, permit and final inspection59.
  5. Ask Health & Sanitation whether the proposed private well needs the listed $100 well permit12.
  6. Obtain a free entrance permit before installing or extending access on a county-maintained road13.
  7. Contact the County Engineer about floodplain review when the site is in a regulated flood-hazard area20.

What should you check before buying land in Boone County?

Start with zoning: confirm the parcel's district, allowed dwelling type, minimum lot area, setbacks, height and lot coverage with Planning & Development2122232425. If the seller proposes splitting land, county land-division or subdivision review may apply27. For a fixed tiny home, verify that the design clears the 23-foot width, 700-square-foot floor area and permanent-foundation requirements10. For an RV used as a dwelling, confirm an approved location before purchase11.

Evaluate wastewater before choosing the building pad because only about 22.8% of Boone County soils are rated without severe limitations for a conventional drain field28. Confirm well permitting with Health & Sanitation and access with the road authority; a new or extended entrance on a county-maintained road needs a free county permit1213. Check mapped flood hazards with the County Engineer before closing20. A typical county home has an effective property-tax rate near 1.4% and a median annual property-tax bill around $2,7413738.

Watch-outs

  • Starting construction without a valid Boone County permit doubles the applicable permit fee8.
  • A fixed tiny home used as a dwelling must meet Boone County's 23-foot width, 700-square-foot floor-area and permanent-foundation standards10.
  • An RV-type unit used as a dwelling needs a location approved under Boone County zoning11.
  • Boone County's agricultural exemption covers zoning only; septic, well, floodplain, addressing and driveway approvals may still apply7.
  • We could not confirm a county building inspection or certificate-of-occupancy requirement in unincorporated Boone County; ask Planning & Development before finishing a dwelling15.

Sources

  1. Apply - Applications & Forms, quoted and re-checked
  2. Boone County Planning & Development (boonecounty.iowa.gov)
  3. Apply - Applications & Forms, quoted and re-checked
  4. Health & Sanitation, quoted and re-checked
  5. Health & Sanitation, quoted and re-checked
  6. Zoning County Ordinance, quoted and re-checked
  7. Apply - Applications & Forms, quoted and re-checked
  8. Resolution No. 26-12 Planning Department/Health and Sanitation Schedule of Fees Update, quoted and re-checked
  9. Health & Sanitation, quoted and re-checked
  10. Boone County Zoning Ordinance, quoted and re-checked
  11. boonecounty.iowa.gov, quoted and re-checked
  12. Boone County—A Guide To Rural Living, quoted and re-checked
  13. Permits and Policies - Engineer, quoted and re-checked
  14. Apply - Applications & Forms (2026 county census)
  15. Boone County Planning & Development (boonecounty.iowa.gov)
  16. Building Code Plan Review - Iowa Department of Inspections, Appeals, & Licensing, quoted and re-checked
  17. Iowa Code 2026, Chapter 91C — Construction Contractors (Iowa statewide rule), quoted and re-checked
  18. Boone County Health & Sanitation (boonecounty.iowa.gov)
  19. Boone County Engineer/Secondary Roads Department (boonecounty.iowa.gov)
  20. Boone County Engineer (Floodplain Administrator) (boonecounty.iowa.gov)
  21. Zoning County Ordinance, quoted and re-checked
  22. Article III. General Regulations, quoted and re-checked
  23. Article III. General Regulations, quoted and re-checked
  24. Boone County Zoning Ordinance, quoted and re-checked
  25. Boone County Zoning Ordinance, quoted and re-checked
  26. Boone County Zoning Ordinance, quoted and re-checked
  27. Apply - Applications & Forms, quoted and re-checked
  28. 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
  29. Boone County—A Guide To Rural Living, quoted and re-checked
  30. Iowa Code §455B.172, Jurisdiction of department and local boards (Iowa statewide rule), quoted and re-checked
  31. Iowa Code §455B.172, Jurisdiction of department and local boards (Iowa statewide rule), quoted and re-checked
  32. Boone County Zoning Ordinance, quoted and re-checked
  33. Iowa Code §335.30, Manufactured and modular homes (Iowa statewide rule), quoted and re-checked
  34. legis.iowa.gov (Iowa statewide rule), quoted and re-checked
  35. boonecounty.iowa.gov, quoted and re-checked
  36. Apply - Applications & Forms, quoted and re-checked
  37. Effective property tax rate: Bolthole Index county data
  38. Median property tax bill: 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.

Found land here? Start a Property Hunt →

Compared with neighboring counties

Unlike 5 of its 6 neighbors, Boone County requires a building permit only in limited cases.

RuleBoone CountyDallas CountyGreene CountyStory CountyHamilton CountyWebster CountyPolk County
Building permitLimitedRequiredLimitedRequiredNot requiredRequiredRequired
County zoningYesYesYesYesNoYesYes
Septic permitsCounty Health & SanitationCounty Env. Health Dept.County Env. HealthCounty Env. Health Dept.County Public HealthCounty Health Dept.County Env. Health Services

County locator

Boone County in Iowa

53
County map
Boone County highlighted among the Iowa counties · colored by Index score

How Boone County scores

Seclusion32100% ev.
Self-Sufficiency48100% ev.
Admin Boringness48100% ev.
Durability61100% ev.
Property Autonomy51100% ev.
Carry Cost54100% 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 →

$238kTypical home
1.4%Property tax
$10,746Land / acre
36"Annual rain
14.5% of yrsSevere drought
4.7 / yr (+4.4)Mid-century 100°F days
15.8 daysMid-century dry spell
1.85" (+9.3%)Mid-century 1-day rain
1.74×Wildfire change factor
100%Forward climate coverage
$1,681Home insurance / yr
2.1% / yrInsurance growth
1.73%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
90,569People within 30 min
1,528,733People within 2 hr
78,680Radius comparison (15 mi)
46.6People / sq mi
0.7%Federal land
93.6%Land at 15% slope or less
22.8%Soils rated "not limited" for septic (strict USDA rating)
82,379 acWorkable land screen
11.1%Wooded land
53.1 tonsBiomass / forest ac
48.5°FAvg temp

Scout Boone County

Camp here before you commitBook a few nights nearby on Hipcamp →Already own land here?Earn money hosting campers — get $100 when you become a Hipcamp host →

Some links are affiliate or referral links — we may earn a commission, at no cost to you.

Property hunt

Find land. Bring the promising ones back.

Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.

View your full hunt →
ZillowLand & lotsRealtor.comLand listingsLandSearchRural & vacant land

Each button opens a current land search for Boone County. Listing sites control their own results and filters.

Analyze a property
Add setup-cost allowances

Use rough quotes or placeholders. Blank fields count as $0.

Working estimate

—land + entered setup costs
Asking $ / acre
—
Setup allowance
—
All-in $ / acre
—

A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.

Before an offer

Parcel due diligence

0/8 checked

Saved properties and checklist progress stay on this device. Bolthole Index does not receive them.

Cities and towns in Boone 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: Beaver · Berkley · Boxholm · Fraser · Luther · Madrid · Pilot Mound

Answers from the rulebook for Boone County

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

Boone County rules

  • Building permitLimited

    County zoning-permit requirement for structures on non-farming properties in unincorporated Boone County; the cited official page does not identify this as a separate building-code permit.

    • A non-agricultural zoning permit is required when a structure is located, erected, moved, reconstructed, extended, enlarged, converted, or structurally altered.
    • The requirement applies to non-farming properties located within unincorporated areas of Boone County.
    • Agricultural zoning exemptions do not eliminate potentially applicable floodplain, county tile development, well, septic, E-911 address, or driveway-access permits.
    “Non-Agricultural Zoning Permit is required when a structure or part thereof is located, erected, moved, reconstructed, extended, enlarged, converted or structurally altered on non-farming properties located within the unincorporated areas of Boone County.”
  • County-wide zoningPresent (with conditions)

    Boone County Zoning Ordinance No. 88 in the unincorporated territory of Boone County.

    • The ordinance applies to unincorporated territory only.
    • Agricultural land, farm houses, farm barns, farm outbuildings, and other structures primarily adapted for agricultural purposes are exempt while so used, except to the extent required to implement Iowa Code §335.27.
    • Iowa Code §335.3 limits county zoning powers to land and structures outside the corporate limits of any city.
    “This ordinance shall apply to the unincorporated territory of Boone County, Iowa”
    2 more reviewed findings on this topic
    • Present (with conditions) — Boone County zoning regulation in unincorporated areas.
      “Boone County Zoning Ordinance No. 88 was adopted July 1, 2008”
    • Present (with conditions) — Zoning in unincorporated Boone County.
      “This ordinance shall apply to the unincorporated territory of Boone County, Iowa”
  • Local zoningVaries (with conditions)

    Aggregate zoning situation across Boone County, distinguishing county zoning in unincorporated territory from zoning authority within incorporated cities.

    • Boone County Ordinance No. 88 applies to unincorporated territory only.
    • Iowa Code §335.3 limits county zoning powers to land and structures outside city corporate limits.
    • This aggregate claim does not assert that Boone County administers municipal zoning ordinances; municipal rules require separate verification.
    • Agricultural exemptions and other ordinance-specific exceptions apply to the county zoning ordinance.
    “any city is hereby empowered to regulate and restrict the height, number of stories, and size of buildings and other structures”
    One more reviewed finding on this topic
    • Present (with conditions) — County zoning administered in unincorporated Boone County.
      “Non-Agricultural Zoning Permit is required when a structure or part thereof is located, erected, moved, reconstructed, extended, enlarged, converted or structurally altered on non-farming properties located within the unincorporated areas of Boone County.”
  • Zoning districtsPublished (with conditions)

    Boone County zoning districts and district map in unincorporated areas.

    • The official county zoning page lists A-1 Agricultural Conservation, A-2 Agriculture Business, TA-1 Transitional Agricultural, R-1 Rural Estates Residential, R-2 Urban Residential, R-3 Mobile Home Residential, C-1 General Commercial, I-1 Industrial, I-2 Heavy Industrial, and PUD-1 Planned Unit Development districts.
    • The page also identifies a district map and district-specific bulk regulations and use tables.
    • Agricultural exemptions under Iowa Code Chapter 335 apply as stated on the official page.
    “ARTICLE IV: DISTRICTS, DISTRICT MAP, USES Section 4.01 – 4.03: Districts, District Map; Interpretation of Boundaries”
  • Minimum dwelling sizeSpecified

    Single-family dwellings regulated by the Boone County Zoning Ordinance in unincorporated Boone County.

    • The dwelling must be at least 23 feet wide.
    • The dwelling must contain at least 700 square feet.
    • The dwelling must be placed upon a permanent foundation.
    • The ordinance definition excludes trailers, mobile homes, hotels, motels, motor lodges, boarding and lodging houses, tourist courts, and tourist homes.
    • County zoning does not apply to qualifying agricultural land and agricultural buildings while used for agricultural purposes; floodplain-related regulations remain applicable.

    minimum width: >= 23 feet · minimum floor area: >= 700 square feet · foundation: permanent

    “All single-family dwellings shall be a minimum of 23 feet in width with a minimum of 700 square feet and placed upon a permanent foundation.”
  • Minimum lot sizeDistrict specific (with conditions)

    Lot-area requirements in Boone County zoning districts.

    • Requirements vary by zoning district and must be read from the applicable district bulk-regulation schedule.
    “Section 4.15 Bulk Regulations Tables 4.15.01 Bulk Regulations for Districts Allowing Residential Use The height and minimum lot requirements shall be as follows:”
  • SetbacksSpecified

    Front, side, and rear yard setbacks in unincorporated Boone County zoning districts.

    • Setbacks vary by district and use.
    • The ordinance permits limited variance or staff reduction under the stated nonconforming-setback conditions.

    R-1 residential subdivision front setback: 35 feet · R-1 residential subdivision side setback: 12 feet · R-1 residential subdivision rear setback: 35 feet · R-2 residential subdivision front setback: 25 feet · R-2 residential subdivision side setback: 10 feet · R-2 residential subdivision rear setback: 25 feet

    “R-1 Residential Subdivision3 10,000 sq.ft. per unit 35 12 35 35 30%”
    One more reviewed finding on this topic
    • District specific (with conditions) — Front, side, and rear yard setbacks in Boone County zoning districts.
      “Yard requirements shall be set forth in the Schedule of Lot, Yard, and Bulk Requirements for each zoning district.”
  • Lot coverageSpecified

    Maximum lot coverage in unincorporated Boone County zoning districts.

    • Lot coverage varies by district and use.
    • The bulk table identifies 30 percent for many residential and commercial uses and 40 percent for some R-1/R-2 townhome or multi-family uses.

    A-1 residential acreage maximum lot coverage: 30 percent · R-1 residential subdivision maximum lot coverage: 30 percent · R-1 rural townhomes maximum lot coverage: 40 percent · R-2 residential subdivision maximum lot coverage: 30 percent

    “Rural Townhomes3 6,000 sq.ft.per unit 25 104 25 35 40%”
  • Building heightSpecified

    Maximum building heights in unincorporated Boone County zoning districts.

    • Height varies by district and use.
    • The bulk table identifies 35 feet for many residential uses, 40 feet for A-1 residential acreages, and 45 feet for several A-2, C-1, and industrial uses.
    • Certain public or semi-public buildings may reach 75 feet when required yards are increased one foot for each additional foot of height.

    A-1 residential acreage maximum height: 40 feet · R-1 residential subdivision maximum height: 35 feet · R-2 residential subdivision maximum height: 35 feet · special public/semi-public maximum height: <= 75 feet (Required yards increase by one foot for each additional foot above district height)

    “public or semi-public service buildings, hospitals, institutions, or schools may be erected to a height not exceeding seventy-five (75) feet when each required yard line is increased by at least one foot for each one foot of additional building height”
  • Living in an RVLimited

    Recreational equipment and RV-type units used as dwellings on residential lots.

    • Use as a dwelling requires an approved location.
    • Commercial campgrounds and travel trailer parks are separately regulated as conditional uses with minimum area and density standards.
    “No such recreational equipment shall be utilized as a dwelling when parked on a residential lot or in any location not approved for such use.”
  • Tiny homesLimited

    Occupancy of a fixed tiny home as a single-family dwelling in Boone County's unincorporated zoning jurisdiction, including the R-1 Rural Estates Residential District.

    • The county ordinance does not define 'tiny home' as a separate use.
    • A fixed tiny home used as a single-family dwelling must be at least 23 feet wide, contain at least 700 square feet, and be placed on a permanent foundation.
    • Single-family detached dwellings are permitted uses only with a zoning permit.
    • In the R-1 district, detached single-family dwelling units are permitted principal uses, and residences must be separated from existing CAFOs as required under IAC 567-65.
    • The county zoning page states that Iowa Code Chapter 335 exempts land, farm houses, farm barns, farm outbuildings, and other buildings or structures primarily adapted for agricultural purposes while so used.
    • Applicable septic, wastewater, building-permit, floodplain, subdivision, and other non-zoning requirements may still apply.

    minimum width: >= 23 feet · minimum floor area: >= 700 square feet · foundation: permanent foundation · zoning permit: true (Required for a permitted use.)

    “All single-family dwellings shall be a minimum of 23 feet in width with a minimum of 700 square feet and placed upon a permanent foundation.”
  • Manufactured homesLimited

    Mobile or manufactured homes used as residences.

    • Mobile homes may be temporary residences during construction with an eighteen-month zoning permit.
    • In certain district provisions, mobile homes and granny flats as second residences are limited to one per residence and must be occupied by an immediate family member.

    temporary residence permit period: 18 months (One-year extension may be granted by the Board of Supervisors)

    “Mobile homes may be utilized as a temporary residence while construction of a residence is ongoing. A zoning permit is required and shall be valid for a period of eighteen (18) months.”
  • Accessory dwellingsLimited

    Caretaker quarters, granny flats, and related accessory residential units.

    • Caretaker's quarters are permitted in all districts only when incidental to the principal use.
    • Some district provisions limit mobile homes and granny flats as second residences to one per residence for an immediate family member.
    “Caretaker's quarters are permitted in all districts, providing the use is incidental to the principal use.”
  • Who permits septicCounty (with conditions)

    New septic systems and renovation of the soil-treatment portion of existing septic systems in Boone County.

    • Permits are required from Health & Sanitation Services.
    • The application is filed with Health & Sanitation Services and accompanied by the proper fee.
    • The stated fee schedule is normally $200 when a percolation test is required and $125 when no percolation test is required; the page notes a fee change as of 7/1/12.
    • A percolation test is conducted if required, and the Sanitarian uses its results to issue the permit.
    • The Boone County ordinance incorporates State of Iowa Chapter 69 regulations without additional restrictions.

    septic permit fee when percolation test is required: 200 USD (normally) · septic permit fee when no percolation test is required: 125 USD (normally; fee change noted as of 7/1/12)

    “Permits for a new septic system or to renovate the soil treatment part of an existing septic system are required from Health & Sanitation Services.”
    2 more reviewed findings on this topic
    • County — On-site wastewater permitting and inspection in Boone County.
      “The Health and Sanitation Department is responsible for managing and coordinating the following activities in Boone County: Septic System permitting and inspection”
    • County — On-site wastewater permitting and inspection in Boone County.
      “The Health and Sanitation Department is responsible for managing and coordinating the following activities in Boone County: Septic System permitting and inspection”
  • Septic permitRequired

    A new septic system or renovation of the soil-treatment part of an existing septic system in Boone County.

    • The application is filed with Health & Sanitation Services.
    • A proper fee is required.
    • A percolation test may be required.
    • The county ordinance incorporates Iowa Chapter 69 without additional restrictions.

    fee when percolation test is required: 200 USD (The page says the fee is normally $200.) · fee when no percolation test is required: 125 USD (The page says the fee is normally $125; fee change noted as of 7/1/12.)

    “Permits for a new septic system or to renovate the soil treatment part of an existing septic system are required from Health & Sanitation Services.”
    One more reviewed finding on this topic
    • Required — Septic systems requiring county Health and Sanitation approval.
      “Septic Permit (including perc test, permit, and final inspection) $250.00”
  • Septic inspectionRequired

    Septic systems requiring the county septic permit process.

    • The county fee schedule expressly includes a final inspection in the septic permit.
    • The reviewed material does not establish whether every existing system receives periodic inspection.

    septic permit fee: 250 USD (including perc test, permit, and final inspection)

    “Septic Permit (including perc test, permit, and final inspection) $250.00”
    One more reviewed finding on this topic
    • Required — County septic permitting and final inspection process.
      “Septic Permit (including perc test, permit, and final inspection) $250.00”
  • Off-grid sanitationAllowed (with conditions)

    Sanitation where public sewer service is unavailable.

    • An approved septic system or other treatment process is required.
    • A county permit must be obtained.
    • The guide does not authorize untreated discharge or unapproved systems.
    “If sewer service is not available, you will need to use an approved septic system or other treatment process.”
  • Well permitLimited

    Private wells in Boone County.

    • The county guide states the Sanitation Department issues permits for most wells, not expressly every well.
    • The county fee schedule lists a $100 well-permit fee.

    well permit fee: 100 USD

    “The Boone County Sanitation Department issues permits for most wells.”
  • Agricultural exemptionAvailable (with conditions)

    Agricultural land and farm-related buildings or proposed dwellings in unincorporated Boone County for purposes of Boone County zoning regulations.

    • Qualification requires demonstration that the principal use of the land and proposed buildings is farm related.
    • For a proposed dwelling, the occupants must be primarily engaged in agriculture.
    • The exemption applies only to Boone County zoning regulations.
    • Other permits, including floodplain and county-tile development, well, septic, E-911 address, or driveway-access permits, may still be required.
    • The zoning ordinance states the agricultural exemption applies except to the extent required to implement Iowa Code §335.27.
    • The zoning ordinance describes a farm as an operation of the usual nature of local farms, raising crops and/or livestock, with animals raised, housed, and fed on the same farm.
    “it must be demonstrated that the principal use of the land and the proposed building(s) is farm related.”
    2 more reviewed findings on this topic
    • Conditional — Agricultural exemption from Boone County zoning regulations.
      “In order to qualify under the agricultural exemption, it must be demonstrated that the principal use of the land and the proposed building(s) is farm related. this includes proposed dwellings, and that the occupants of the dwelling are primarily engaged in agriculture. The farm exemption applies only to Boone County zoning regulations. Other permits (such as floodplain & county tile development, well, septic, E-911 address or driveway access) may be required.”
    • Conditional — Agricultural zoning exemption applications in Boone County.
      “The farm exemption applies only to Boone County zoning regulations. Other permits (such as floodplain & county tile development, well, septic, E-911 address or driveway access) may be required.”
  • Subdividing landRegulated (with conditions)

    Land divisions and subdivisions in Boone County.

    • The county Planning & Development department administers the subdivision ordinance.
    • A land division includes division of a quarter-quarter section into two or more lots, parcels, or other divisions for transfer, development, or lease.
    “Division of a quarter-quarter section of land into two (2) or more lots, parcels, or other divisions of land for purpose, whether immediate or future, of transfer of ownership, building development or lease.”
    One more reviewed finding on this topic
    • Regulated (with conditions) — Land division and subdivision in unincorporated Boone County.
      “33 · Land Division (December 11, 2000) Be sure to look at amendment: Ordinance #52”
  • Driveway accessRequired

    Any new entrance or extension installed on roads maintained by Boone County.

    • The Secondary Road Department evaluates sight distance and drainage-structure size if necessary.
    • There is no charge for the entrance permit.
    • This source addresses county-maintained roads; other roads may have different authorities.

    entrance permit fee: 0 USD

    “An entrance permit is required for any new entrance or extension installed on roads maintained by the County. There is no charge for this permit.”
  • Permit feesPublished (with conditions)

    Boone County Planning and Development Department zoning, planning, land-division, subdivision, addressing, floodplain-review, and Health and Sanitation permit fees listed in the county schedule.

    • Zoning permit fees are calculated from the rough valuation of construction using the listed estimated cost per square foot multiplied by the construction square footage.
    • The zoning-permit schedule lists a $40 minimum fee and a $1,500 maximum fee for construction.
    • Permit fees are doubled for all construction started without a valid permit.
    • All application fees are non-refundable.
    • The schedule states that engineering costs for projects within drainage district boundaries requiring engineering review are paid directly to the drainage district engineer by the applicant.
    • The schedule states that swimming-pool water testing is no longer available.
    • The schedule was last amended on May 8, 2026 to add engineering fee reimbursements; the resolution's adoption date is blank, so no effective date is assigned.
    • The source does not expressly distinguish incorporated municipalities from unincorporated areas; applicability is limited here to fees administered by Boone County departments.

    residential wood frame dwelling valuation: 100 USD per sq ft · residential basement area valuation: 40 USD per sq ft · residential dwelling addition valuation: 100 USD per sq ft · residential accessory structure greater than 120 sq. ft. valuation: 30 USD per sq ft (Accessory structure must be greater than 120 sq. ft.) · residential accessory pole building unfinished inside valuation: 25 USD per sq ft (Unfinished inside) · residential deck attached to permanent structure valuation: 25 USD per sq ft (Attached to permanent structure) · residential new modular home factory built valuation: 100 USD per sq ft (Factory built) · commercial and industrial including agricultural related businesses valuation: 90 USD per sq ft · minimum construction permit fee: 40 USD · maximum construction permit fee: 1500 USD · mobile home/trailer with D.O.T. VIN number on chassis: 100 USD · E 911 addressing with sign/hardware including delivery: 50 USD (Pickup at office is $40) · E 911 flag mount sign replacement: 20 USD · E 911 flag mount hardware replacement: 20 USD · home occupations and home based businesses: 100 USD · flood plain review including County Tile Review: 30 USD · passport photos when available: 12 USD (Only when available) · variance: 200 USD · rezoning map or text amendment: 300 USD · conditional use processing fee also called special exception: 200 USD · Board of Adjustment appeal: 200 USD · cellular tower: 500 USD · temporary meteorological tower: 250 USD · commercial WECs: 500 USD · residential WECs: 250 USD · land division application: 50 USD · subdivision of 3 or more lots preliminary plat: 325 + 10 per lot USD · subdivision of 3 or more lots final plat: 125 USD · street sign administration and installation fee per intersection: 125 USD · septic permit including perc test permit and final inspection: 250 USD · perc test/site evaluation: 125 USD · additional site visit each: 45 USD · requested system permit only: sand filter, peat filter, mound or mechanical: 150 USD (Permit only) · well permit: 100 USD · salvage yard permit: 100 USD · radon test kit short term: 12.5 USD (Actual cost; currently listed price) · radon test kit long term: 40 USD (Actual cost; currently listed price) · lead water test not covered by Grants to Counties program: 60 USD (Not covered by Grants to Counties program)

    “WHEREAS, Boone County establishes the following schedule of fees for the Planning and Development Department: SCHEDULE OF FEES Last Amended on May 8, 2026”
    2 more reviewed findings on this topic
    • Published (with conditions) — Planning and Development fee information and county septic permit fees.
      “The fee schedule for Septic Permits is normally $200 if a percolation test is required, or $125 if no percolation test is required. (NOTE: fee change as of 7/1/12)”
    • Published — Planning, zoning, subdivision, septic, well, and related county permit fees.
      “Minimum fee for permits - $ 40 Maximum fee for construction - $ 1,500”
  • Permit processPartial

    Conditional-use permit process administered by Boone County Planning and Development.

    • Certain uses or businesses specified in the Boone County Zoning Ordinance require a conditional-use permit.
    • The application requires a public hearing before the Boone County Zoning Commission and Board of Adjustment.
    • The application must be submitted 15 working days before the Zoning Commission meeting.
    • The Board of Adjustment considers the application and Zoning Commission recommendation 15 working days before its meeting.
    • The Board of Adjustment may void or cancel the permit if conditions are not met or complied with.

    submission deadline before Zoning Commission meeting: >= 15 working days · submission deadline before Board of Adjustment meeting: >= 15 working days

    “Certain uses of land or types of businesses specified in the Boone County Zoning Ordinance require a conditional use permit application. The conditional use permit application requires a public hearing before the Boone County Zoning Commission and Board of Adjustment.”
    One more reviewed finding on this topic
    • Published (with conditions) — County zoning, conditional-use, variance, and land-division application processes.
      “A completed Conditional Use Permit application shall be submitted to Planning and Development 15 working days prior to the Zoning Commission's regularly scheduled monthly meeting held the last Monday of every month.”

Iowa rules that apply here

  • Owner-builder exemptionAvailable (with conditions)

    A person performing work or having work performed on the person's own property, for purposes of Iowa Code chapter 91C contractor registration.

    • The exemption is from being treated as a contractor for purposes of chapter 91C; it is not stated to waive building permits, building-code compliance, inspections, or certificates of occupancy.
    • The separate annual-earnings threshold is less than $2,000, but the own-property exemption is stated independently.
    • A contractor doing business in Iowa must register under chapter 91C unless an applicable statutory exclusion applies.
    “However, a person who earns less than two thousand dollars annually or who performs work or has work performed on the person’s own property is not a contractor for purposes of this chapter.”
  • Building code adoptedPartial

    The Iowa State Building Code, including the 2024 International Building Code adopted by reference with Iowa amendments, applies statewide to state-owned buildings and structures, qualifying state-funded construction, certain cities over 15,000 that lack a substantially equivalent local building code, and governmental subdivisions that accept the code by ordinance. Factory-built-structure provisions apply throughout Iowa.

    • In a governmental subdivision, the code generally applies only after the governing body enacts an ordinance accepting applicability and files a certified copy with the commissioner.
    • The local ordinance fixes the effective date, which must be no more than six months after adoption.
    • A governmental subdivision may withdraw after one year by ordinance, following the required public hearing and written notice; the withdrawal date must be at least 180 days after ordinance adoption, and previously issued permits are unaffected.
    • The state building code applies to state-owned buildings and structures and to newly constructed buildings and structures paid for in whole or in part with state-appropriated money but not wholly state-owned.
    • Cities with populations over 15,000 that lack a local building code substantially in accord with nationally recognized standards must enforce the state building code.
    • Factory-built-structure provisions apply throughout the state; an approved factory-built structure is deemed compliant with building regulations applicable to its manufacture and installation and is exempt from other state or local building regulations, subject to the statutory exceptions concerning professional engineering and architecture and manufactured homes.
    • The current administrative rule adopts the 2024 International Building Code by reference with amendments; detached one- and two-family dwellings, certain townhouses not more than three stories, and their accessory structures instead comply with the amended International Residential Code.

    adopted model building code: 2024 International Building Code (Adopted by reference with Iowa amendments.) · current administrative-rule effective date: 2025-09-10 (Iowa Administrative Code Chapter 481.301 source identifies ARC 9474C as effective September 10, 2025.) · local ordinance effective-date limit: <= 6 months after adoption · local withdrawal waiting period: >= 1 year after code became applicable (A governmental subdivision may withdraw only after this period has elapsed.) · withdrawal effective-date minimum: >= 180 days after ordinance adoption (Previously issued permits remain unaffected.)

    “The state building code shall be applicable: [...] In each governmental subdivision where the governing body has enacted an ordinance accepting the application of the code.”
    One more reviewed finding on this topic
    • Adopted (with conditions) — State building codes applicable in Iowa, including the 2024 International Residential Code; the Iowa DIAL page identifies rural Boone associated with United Community School District as subject to state review.
      “2024 International Residential Code as adopted by Iowa Administrative Rule chapters 481-301”
  • InspectionsLimited

    Buildings and structures subject to Iowa Code section 103A.10A, including newly constructed state-owned buildings, state-board-of-regents buildings, and certain state-funded buildings.

    • Newly constructed state-owned buildings and structures subject to the state building code are subject to plan review and inspection, excluding renovations and repairs except as provided by statute.
    • Newly constructed buildings owned by the state board of regents are subject to plan review and inspection, excluding renovations and repairs except as provided by statute.
    • State-funded buildings not wholly owned by the state are subject to state plan review and inspection when the governmental subdivision has not adopted the listed codes or does not perform inspections; otherwise they must comply with the local codes and inspections.
    • For ordinary privately owned construction, inspection administration is governed by the applicable local law or ordinance.
    “All newly constructed buildings or structures subject to the state building code, including any addition, but excluding any renovation or repair of such a building or structure, owned by the state or an agency of the state, except as provided in subsection 2, shall be subject to a plan review and inspection by the commissioner or an independent building inspector appointed by the commissioner.”
  • Certificate of occupancyLimited

    Certificates of occupancy or use for buildings subject to Iowa's State Building Code and certificates approving specified buildings, facilities, or installations for licensure.

    • A local building department issues certificates of occupancy or use when required by ordinance.
    • When issued for a building constructed under the state building code, the certificate must certify conformity with the code and is in the form prescribed by the governing body of the governmental subdivision.
    • For facilities governed by Iowa Administrative Code chapter 481.280, if a certificate of occupancy is required for use, it will not be issued until the inspection fee is paid.
    • Chapter 481.280.5 applies to a certificate approving a building, facility, or installation for occupancy upon request from an owner or owner's agency when applicable rules are satisfied and all fees are paid.
    • The state sources do not require a certificate of occupancy for every building statewide.

    additional reinspection fee: 125 USD (Applies for each additional reinspection after the initial reinspection when original deficiencies remain uncorrected.)

    “Issue certificates of occupancy or use, permits, licenses, and other documents in connection with the construction of buildings or structures as may be required by ordinance. (1) A certificate of occupancy or use for a building or structure constructed in accordance with the provisions of the state building code shall certify that the building or structure conforms to the requirements of the code. The certificate shall be in the form the governing body of the governmental subdivision prescribes.”
  • county zoning authorityGeneral

    Iowa counties may adopt zoning ordinances for land and structures within the county but outside the corporate limits of any city.

    • Chapter 335 applies to any Iowa county at the option of its board of supervisors.
    • The zoning power is subject to Iowa Code section 335.2: ordinances generally do not apply to agricultural land, farm houses, farm barns, farm outbuildings, or other structures primarily adapted for agricultural purposes while so used, except that ordinances may apply to structures, buildings, dams, obstructions, deposits, or excavations in or on river or stream floodplains.
    • A county may not require an application, approval, or fee for an ordinance to be deemed inapplicable to qualifying agricultural land or structures.
    • A county may not regulate, restrict, or prohibit the location of permanent buildings or temporary structures used for consumer-fireworks sales pursuant to section 10A.519 in locations zoned commercial or industrial.
    • The board of supervisors may divide the county into zoning districts, and regulations may differ among districts.
    • Regulations and restrictions require public-hearing and notice procedures under sections 335.6 and 331.305; district boundaries must identify the affected township and section and, if possible, streets or roads.
    • Energy-conservation and solar-access objectives do not require zoning in a county that did not have zoning before July 1, 1981.
    “applicable to any county [...] at the option of the board of supervisors [...] outside of the corporate limits of any city.”
  • county building authorityGeneral

    Iowa counties may adopt, administer, and enforce county building codes and may administer and enforce the state building code for buildings, including residential construction, in county jurisdiction outside incorporated municipalities, subject to statutory limitations.

    • A county building code may not apply within the incorporated area of a city except at the city's option.
    • A county building code may not apply within a city's two-mile limit under Iowa Code §414.23 to the extent the city has adopted a building code within that two-mile limit.
    • A county building code may not apply to farm houses or other farm buildings primarily adapted for agricultural purposes while so used or under construction for that use.
    • Administration and enforcement are conducted as prescribed by local law or ordinance.
    • The state building code applies in a governmental subdivision only after the governing body adopts an ordinance accepting it and files a certified copy with the commissioner; the ordinance fixes the effective date, which must be no more than six months after adoption.
    • A local building department may prohibit commencement of construction until a permit is issued after showing compliance with applicable state building-code provisions.
    • Thermal-efficiency energy-conservation standards apply to construction containing heated or cooled enclosed space, but the commissioner must provide appropriate exceptions where applying an energy-conservation requirement would be impractical.
    “The power to adopt, administer, and enforce the state building code shall be exercised in accordance with chapter 103A. The power to adopt by ordinance, administer, and enforce a county building code, is subject to the following restrictions: a. A county building code shall not apply within the incorporated area of a city except at the option of the city, and shall not apply within a city’s two-mile limit referred to in section 414.23, to the extent that the city has adopted a building code within the two-mile limit. b. A county building code shall not apply to farm houses or other farm buildings which are primarily adapted for use for agricultural purposes, while so used or under construction for that use.”

Still unanswered

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

  • Camping on your land — Temporary camping on private land in Boone County.
  • Mandatory utility hookup — Water and sewer connection requirements for development in Boone County.
  • Building in a floodplain — Development in Boone County floodplains.
  • Short-term rentals — Short-term rental use in Boone County.

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 Boone County, Iowa

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

Boone County scores 53/100 on the Bolthole Index, a solid county profile. Its strengths: mixed durability signals. Watch-outs: about 90,569 people within a 30-minute drive.

Do you need a building permit in Boone County, Iowa?

Boone County requires a building permit only in limited cases (such as floodplains or specific zones), and it enforces county zoning. Onsite septic is permitted by Boone County Health and Sanitation (Environmental Health). 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 Boone County?

Living in an RV on your own land in Boone County is limited to specific cases: Recreational equipment and RV-type units used as dwellings on residential lots. Use as a dwelling requires an approved location. Commercial campgrounds and travel trailer parks are separately regulated as conditional uses with minimum area and density standards. A tiny home is limited to specific cases. Confirm with the county before relying on it.

How much does land cost in Boone County, Iowa?

Land in Boone County runs about $10,746 per acre, based on the latest county data.

What is the water situation in Boone County?

Boone County gets about 36" of rain a year, with severe drought in roughly 14.5% of years.

How remote is Boone County?

A representative private-land location has about 90,569 people within a 30-minute drive and 1,528,733 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Boone compares in Iowa

Compare side-by-side →See all 99 Iowa counties ranked →