Bolthole Index

Boone County, Missouri

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

62Index Score / 100
#92 of 115 in Missouri

Unincorporated Boone County, Missouri requires building permits for new dwellings, garages, manufactured housing, remodeling and other work that adds or physically changes a structure; cosmetic work does not need a building permit1. Boone County Resource Management handles building inspections, zoning and on-site wastewater permits, while incorporated cities and towns administer their own land-use rules234.

At a glance

Building permit
Required for covered construction in unincorporated Boone County; cosmetic work is exempt5
Zoning
County zoning applies in unincorporated areas; cities and towns use their own rules2
Septic permit
Required for new or renovated on-site sewage systems; Resource Management administers the program63
Manufactured home
At least 650 square feet and subject to placement and district rules7
RV living
A general residential or long-term occupancy rule could not be confirmed; ask Resource Management about the parcel's zoning8
Tiny home
No categorical occupancy rule was confirmed; county building and zoning review still applies910
Owner-builder
No exemption from county permits or inspections was confirmed11

Who to call

Building permits

Boone County Resource Management

Building permits and inspections for areas outside Columbia city limits; Resource Management also administers county planning, zoning, floodplain review and on-site wastewater

(573) 886-4330

[email protected]

Boone County Government Center, 801 E Walnut, Rm. 315, Columbia, MO 65201-7732

Online permits →

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

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

Yes. Unincorporated Boone County requires a building permit for work that adds or physically changes structures, including dwellings, garages, carports, sheds, pole barns, manufactured homes, additions, remodeling and regulated electrical, plumbing, roofing, gas and HVAC work; cosmetic work does not require one1. Boone County does not require a demolition permit, although controlled burning and asbestos removal may involve other agencies5. County applications receive land-use, floodplain and address review, followed by inspections during construction12.

County-issued permits have been subject to the adopted 2015 International Codes since April 1, 201713. A compliant inspected structure receives a Certificate of Occupancy, which the county says takes three business days to process14. Missouri's farm-structure exemption is narrow: it limits county fire-protection ordinances and does not create a blanket exemption from Boone County zoning, building, floodplain or septic requirements15.

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

Boone County Resource Management is the building-permit and inspection office for areas outside Columbia city limits124. Its main number is (573) 886-4330, its email is [email protected], and its office is in the Boone County Government Center at 801 E Walnut, Rm. 315, Columbia, MO 65201-77324. The county provides an online building-permit application through the office listing above4.

New-construction fees are based on square footage, while alteration and remodeling fees are based on estimated construction cost; wastewater and driveway fees may be added16. The current schedule sets a $40 non-commercial minimum and a $70 commercial minimum, doubles the fee for construction started without a permit, and expires permits after 180 days of inactivity16. Credit-card payments add 2.35%, with a $1.55 minimum17. During construction, request inspections by phone with the permit number at least one day ahead; a $25 reinspection fee may be charged12.

Does Boone County have zoning?

Yes. Boone County administers zoning in unincorporated areas, but incorporated cities and towns administer their own zoning and land-use rules2. Resource Management offers a Zoning Information Viewer, and permitted or conditional uses vary by district10. Confirm both jurisdiction and zoning before relying on a listing description.

Setbacks vary by zoning classification, and corner lots must meet two front setbacks18. Non-farm buildings are ordinarily capped at 35 feet in the listed agricultural, residential, recreation and planned districts and 45 feet in listed commercial and industrial districts19. A building may reach 100 feet with one additional foot of setback for every foot above the ordinary limit; greater height requires conditional-use approval, and airport airspace adds limits near Columbia Regional Airport19. Boone County checks every building application against flood maps; floodplain-fringe structures must be elevated or floodproofed, and floodway construction is generally prohibited except qualifying agricultural structures designed to pass floodwater20.

How do septic permits work in Boone County?

Boone County Resource Management administers on-site wastewater regulation and permitting countywide3. A permit is required for a new or renovated on-site sewage system, but a separate wastewater application is unnecessary when the owner applies simultaneously for a new-home building permit6. New systems and upgrades require a soils morphology report6.

The county lists a $510 permit fee for a new system or upgrade6. A county pre-site inspection takes place before construction or reconstruction, and the system must remain uncovered until final inspection21. Only 1.3% of Boone County soils are rated without severe limits for a conventional drain field, so make the soils report and system cost part of due diligence rather than assuming a standard field will work22. Missouri's temporary suspension of certain state application fees does not itself establish that Boone County's separately published local fee is waived; confirm the amount with Resource Management before applying236.

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

We could not confirm a general Boone County rule allowing or prohibiting residential or long-term RV occupancy on private land, or a categorical occupancy rule for tiny homes. Ask Resource Management about the parcel's zoning district, the proposed unit and whether the use is temporary or permanent before buying. County permits cover regulated construction, while allowed uses and dimensional rules vary by zoning district510.

Manufactured homes have a clearer rule. In unincorporated Boone County, a manufactured home used as a dwelling must contain at least 650 square feet and is allowed where single-family dwellings are permitted, subject to district yard, density, parking, placement, tie-down, skirting and wastewater rules7. A manufactured or mobile home in a recorded subdivision requires conditional-use approval7. In the listed agricultural and residential districts, one accessory dwelling may be up to 75% of the primary dwelling or 1,500 square feet, whichever is less; it must share ownership with the primary home and meet building, zoning and health rules24.

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

  1. Confirm that the parcel is outside an incorporated city or town, then identify its county zoning district and district-specific uses210.
  2. Verify setbacks, height limits, floodplain status and whether the proposed home or accessory dwelling fits the parcel18192024.
  3. Obtain the soils morphology report for a new or upgraded on-site wastewater system and arrange the county pre-site inspection before footing inspections612.
  4. Submit a complete application, including a site drawing for a new structure and a soils report and complete site plan for a new on-site wastewater system; incomplete submissions are not accepted25.
  5. Get a county permit for a new driveway on a county-maintained road and ask whether resurfacing or culvert replacement also needs approval; work in MoDOT right-of-way needs a state permit2627.
  6. Pay the calculated permit fees, schedule inspections by phone, leave the wastewater system open until final inspection, and obtain the Certificate of Occupancy after code compliance28252114.

What should you check before buying land in Boone County?

Start with jurisdiction and zoning: county rules govern unincorporated land, while each incorporated city or town uses its own land-use system2. Then check the zoning district, setbacks, height limits and flood map before deciding where a house, driveway or accessory building can sit10181920. Confirm legal road access as well; a new driveway on a county-maintained road needs a county permit, while a driveway within state right-of-way needs MoDOT approval2627.

Treat wastewater feasibility as a purchase condition because only 1.3% of county soils are rated without severe limits for a conventional drain field22. Ask Resource Management about a soils morphology report and pre-site inspection before assuming the homesite works621. Boone County is 46.4% wooded and 82.1% of its land has slopes of 15% or less, but parcel-level clearing, drainage and grading can differ sharply2930. The median property-tax bill is about $2,232 a year at an effective rate near 0.9%, useful context but not a parcel-specific quote3132.

Watch-outs

  • Boone County zoning and permit authority described here applies to unincorporated land; incorporated cities and towns administer their own rules2.
  • Long-term RV occupancy and tiny-home occupancy were not confirmed as categorical allowances; ask Resource Management about the parcel's zoning and proposed use before purchase8.
  • Only 1.3% of Boone County soils are rated without severe limits for a conventional drain field, so verify wastewater feasibility early22.
  • Starting construction without a Boone County building permit doubles the permit fee, and a permit expires after 180 days of inactivity16.

Sources

  1. Frequently Asked Questions | Resource Management, quoted and re-checked
  2. Frequently Asked Questions | Resource Management, quoted and re-checked
  3. On-Site Wastewater Systems, quoted and re-checked
  4. Boone County Resource Management (boonemo.gov)
  5. Frequently Asked Questions | Resource Management, quoted and re-checked
  6. On-Site Wastewater Systems | Resource Management, quoted and re-checked
  7. Boone County Zoning Ordinance, quoted and re-checked
  8. Frequently Asked Questions | Resource Management (2026 county census)
  9. Frequently Asked Questions | Resource Management (2026 county census)
  10. Regulations & Land Use Plans, quoted and re-checked
  11. (2026 county census)
  12. Frequently Asked Questions | Resource Management, quoted and re-checked
  13. Building Inspections | Resource Management, quoted and re-checked
  14. Building Inspections | Resource Management, quoted and re-checked
  15. RSMo Section 64.003 — Farm buildings and farm structures (Missouri statewide rule), quoted and re-checked
  16. Frequently Asked Questions | Resource Management, quoted and re-checked
  17. Frequently Asked Questions | Resource Management, quoted and re-checked
  18. Frequently Asked Questions | Resource Management, quoted and re-checked
  19. Boone County Zoning Ordinance, quoted and re-checked
  20. Floodplain, quoted and re-checked
  21. On-Site Wastewater Systems | Resource Management, quoted and re-checked
  22. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  23. OWTS Construction Permit Process (Missouri statewide rule), quoted and re-checked
  24. Zoning Ordinance for Boone County, Missouri, quoted and re-checked
  25. Forms & Fees | Resource Management, quoted and re-checked
  26. Frequently Asked Questions | Resource Management, quoted and re-checked
  27. Permits | Missouri Department of Transportation (Missouri statewide rule), quoted and re-checked
  28. Frequently Asked Questions | Resource Management, quoted and re-checked
  29. Wooded share of land: Bolthole Index county data
  30. Share of land at 15% slope or less: Bolthole Index county data
  31. Median property tax bill: Bolthole Index county data
  32. Effective property tax rate: Bolthole Index county data

Written September 29, 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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County locator

Boone County in Missouri

62
County map
Boone County highlighted among the Missouri counties · colored by Index score

How Boone County scores

Seclusion41100% ev.
Self-Sufficiency61100% ev.
Admin Boringness4690% ev.
Durability65100% ev.
Property Autonomy47100% ev.
Carry Cost73100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$337kTypical home
0.9%Property tax
$5,608Land / acre
42.1"Annual rain
9% of yrsSevere drought
12.4 / yr (+10.5)Mid-century 100°F days
16.6 daysMid-century dry spell
2.11" (+5%)Mid-century 1-day rain
1.82×Wildfire change factor
100%Forward climate coverage
$1,929Home insurance / yr
1.9% / yrInsurance growth
1.18%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
118,849People within 30 min
1,492,640People within 2 hr
156,274Radius comparison (15 mi)
276.4People / sq mi
1.1%Federal land
82.1%Land at 15% slope or less
1.3%Septic soil without severe limits
5,535 acWorkable land screen
46.4%Wooded land
45.9 tonsBiomass / forest ac
54.8°FAvg temp

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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 permitRequired

    Construction that physically changes or adds structures, including new dwellings, garages, manufactured housing, remodeling, and regulated installations.

    • Cosmetic work does not require a building permit.
    • The FAQ states the County does not require a demolition permit.
    • Municipal permitting rules may apply inside incorporated cities.
    “A permit is required for any construction that physically changes or adds structures to your property or for work regulated by codes or resolutions”
    One more reviewed finding on this topic
    • Required — Construction in unincorporated Boone County that physically changes or adds structures or is regulated by codes or resolutions.
      “A permit is required for any construction that physically changes or adds structures to your property or for work regulated by codes or resolutions, such as:”
  • Building code adoptedAdopted (with conditions)

    Boone County building codes outside the City of Columbia.

    • The County adopted 2015 International Codes effective April 1, 2017; permits issued on or after that date are subject to the 2015 codes.
    • Agricultural buildings are outside the Residential Code; where a permit is required, they must comply with the International Building Code or other standards approved by the Building Official.

    effective date: 2017-04-01 (Permits issued on or after that date)

    “Boone County adopted 2015 International Codes which will be effective April 1, 2017. All permits issued on and after that date will be subject to the 2015 codes.”
  • InspectionsRequired

    County building inspections during construction outside Columbia city limits.

    • The type and number of inspections vary with project complexity.
    • At least one day of notice is required; requests must be made by phone with the permit number.
    • For proposed onsite wastewater systems, wastewater approval and a site inspection precede other inspections, including footing inspections.
    • A new driveway on a county-maintained road requires a pre-site inspection.
    • A $25 re-inspection fee may be charged.

    minimum inspection notice: >= 1 day · re-inspection fee: 25 USD (May be charged.)

    “All applications for building permits are reviewed for compliance with land use regulations, floodplain regulations, and address requirements. Inspections take place throughout the construction process.”
  • Certificate of occupancyRequired

    Structures inspected under Boone County building-code administration.

    • Structures meeting the building code are issued a Certificate of Occupancy.
    • The county states that temporary or certificate-of-occupancy processing takes three business days.
    • Columbia city limits are outside the county inspection division's scope.

    processing time: 3 business days

    “Structures that meet the building code are issued a Certificate of Occupancy. Please allow three business days for the Certificate to be processed and issued.”
  • County-wide zoningPresent (with conditions)

    Boone County zoning regulations in unincorporated areas.

    • Boone County does not have jurisdiction within incorporated cities and towns; city properties must contact the applicable city.
    “When it comes to land use planning and building, Boone County does not have jurisdiction within the county's incorporated cities and towns.”
  • Local zoningVaries (with conditions)

    Aggregate conclusion for zoning across Boone County, including county unincorporated areas and incorporated municipalities.

    • The county administers zoning in unincorporated areas; incorporated cities and towns administer their own zoning.
    • Municipal rules may differ from county rules.
    “This means that if you want information about your zoning, about getting a building permit, or any other specific land use question, you must contact the city in which your property lies.”
    One more reviewed finding on this topic
    • Varies (with conditions) — Aggregate county result: Boone County zoning applies in unincorporated areas, while incorporated cities and towns administer their own land-use rules.
      “When it comes to land use planning and building, Boone County does not have jurisdiction within the county's incorporated cities and towns.”
  • Zoning districtsPublished (with conditions)

    Boone County zoning districts and district-specific land-use controls outside incorporated cities and towns.

    • The County provides zoning regulations and a Zoning Information Viewer.
    • District-specific requirements vary by zoning classification.
    • Incorporated cities and towns administer their own zoning.
    “Zoning Regulations (Re-adopted March 31, 2026)”
  • Minimum dwelling sizeSpecified

    Manufactured homes used as dwellings in unincorporated Boone County zoning districts where single-family dwellings are permitted.

    • The manufactured home must contain at least 650 square feet of floor space.
    • A manufactured home or mobile home is not permitted in a recorded subdivision except as a conditional use.
    • The unit must comply with the district's yard, density, and off-street parking requirements.
    • The space beneath the unit must be enclosed by a foundation or underskirted with durable material within 90 days of placement.
    • The unit must be tied down for 15 pounds per square foot wind loads within 30 days of placement and before occupancy, except when the ground is frozen.
    • Wastewater treatment meeting Missouri Department of Natural Resources or Boone County minimum standards is required before occupancy.
    • A placement permit under Section 15.D is required before placement.

    minimum floor space: >= 650 sq. ft.

    “A manufactured home containing a minimum of 650 sq. ft. of floor space shall be permitted in all Districts where Single Family Dwellings are permitted.”
  • SetbacksDistrict specific (with conditions)

    Building setbacks in unincorporated Boone County.

    • The setback requirement varies by zoning classification.
    • Corner lots have two front property lines and must meet both front setbacks.
    “The setback requirement varies depending on your zoning classification.”
  • Building heightSpecified

    Non-farm buildings and structures in Boone County zoning districts.

    • Maximum height is 35 feet in listed agricultural, residential, recreation, and planned districts and 45 feet in listed commercial and industrial districts.
    • Buildings may reach up to 100 feet when set back one additional foot for each foot above the ordinary limit.
    • A conditional-use permit may authorize greater height.
    • Additional airport airspace limits apply near Columbia Regional Airport.

    maximum height: 35 feet (Specified agricultural, residential, recreation, and planned districts.) · maximum height: 45 feet (Specified commercial and industrial districts.) · conditional height ceiling: <= 100 feet (Subject to the ordinance's additional setback rule.)

    “Thirty-five feet in the A-1, A-1P, A-2, A-2P, A-R, A-RP, R-S, R-SP, R-D, R-DP, R-M, R-MP, REC and REC-P Districts.”
  • Manufactured homesLimited

    Manufactured-home occupancy in unincorporated Boone County zoning districts.

    • Manufactured or mobile homes are permitted in districts where single-family dwellings are permitted.
    • A manufactured or mobile home in a recorded subdivision requires a conditional use.
    • The home must meet district yard, density and parking requirements.
    • The space beneath must be enclosed or skirted within 90 days.
    • The home must be tied down within 30 days and before occupancy, except when the ground is frozen.
    • Wastewater treatment must comply with Missouri Department of Natural Resources or Boone County standards before occupancy.
    • A placement permit is required before placement.
    • Single-wide units may not be joined into a double unit without a conditional use permit.

    minimum floor area: >= 650 square feet (Manufactured or mobile home)

    “A manufactured home containing a minimum of 650 sq. ft. of floor space shall be permitted in all Districts where Single Family Dwellings are permitted. No manufactured home or mobile home shall be permitted in a recorded subdivision except as a conditional use.”
  • Accessory dwellingsAllowed (with conditions)

    One accessory dwelling on a legally created individual parcel in A-1, A-2, A-R, or R-S Districts.

    • Minimum separation is 10 feet unless attached by a common wall.
    • Size may not exceed 75% of the primary dwelling or 1,500 square feet, whichever is less.
    • One additional off-street parking space is required for an accessory dwelling with more than three bedrooms.
    • The accessory dwelling must meet the applicable Building Code, Zoning Regulations, and Code of Health Regulations.
    • Primary and accessory dwellings must be owned by the same entity.

    minimum separation: >= 10 ft (unless attached by a common wall) · maximum size: 75% of primary dwelling or 1,500 sq ft, whichever is less

    “A single accessory dwelling is allowed on legally created individual parcels in the A-1, A-2, A-R, and R-S Districts subject to the following:”
    One more reviewed finding on this topic
    • Limited — Accessory dwellings on legally created individual parcels in Boone County zoning districts.
      “A single accessory dwelling is allowed on legally created individual parcels that are 20-acres or larger in size up to a maximum of two total dwelling units on said individual 20-acre or larger parcels.”
  • Who permits septicCounty (with conditions)

    Onsite wastewater regulation and enforcement in Boone County.

    • Responsibility transferred from City of Columbia/Boone County Public Health and Human Services to Boone County Resource Management effective June 28, 2022.
    • State design criteria also apply and are uniform within Missouri.

    transfer date: 2022-06-28

    “Effective June 28, 2022, this responsibility has been transferred to Boone County Resource Management.”
    One more reviewed finding on this topic
    • County — On-site wastewater regulation and permitting in Boone County.
      “Effective June 28, 2022, this responsibility has been transferred to Boone County Resource Management.”
  • Septic permitRequired

    New onsite sewage systems and renovation of existing onsite wastewater systems in Boone County.

    • A separate wastewater application is not needed when simultaneously applying for a building permit for a new home.
    • New or upgraded systems require a soils morphology report.
    • Permit fee for new construction or upgrading an existing system is $510.00.
    • The application and required documentation must be reviewed and approved before issuance.

    permit fee: 510 USD (New construction or upgrade of existing system)

    “Are you: Constructing a new building and planning to install an on-site sewage system? Renovating an existing on-site sewage system? If so, you must apply for a permit.”
  • Septic inspectionRequired

    Onsite wastewater systems in Boone County.

    • A pre-site inspection is conducted before construction or reconstruction.
    • No backfilling is allowed until final inspection.
    • Installers must request inspections in advance.
    “An on-site inspection will be conducted to determine site applicability prior to construction or reconstruction of a system. Contact Resource Management to schedule your pre-site inspection. All requested inspections will be scheduled for the next business day.”
  • Driveway accessRequired

    New driveways accessing county-maintained roads in unincorporated Boone County.

    • A permit may also be required to resurface an existing driveway or replace a culvert.
    • Driveways on state highways may involve the Missouri State Highway Department.
    “A driveway permit is required when you place a new driveway off a county maintained road. Permits may also be required when you re-surface an existing driveway or replace a culvert.”
    One more reviewed finding on this topic
    • Required — A new driveway off a county-maintained road.
      “A driveway permit is required when you place a new driveway off a county maintained road. Permits may also be required when you re-surface an existing driveway or replace a culvert.”
  • Building in a floodplainRequired

    Development and building permits in Boone County regulatory floodplain areas.

    • All building permit applications are checked against flood maps.
    • Floodplain-fringe structures may be built only if elevated or floodproofed.
    • Building in the floodway is strictly prohibited, except agricultural structures may be allowed if designed and built to allow floodwaters to pass through.
    • A floodplain development application is provided by the county.
    “All building permit applications are checked against the flood maps to determine the location of a proposed structure relative to the regulatory floodplain.”
    One more reviewed finding on this topic
    • Limited — Structures proposed in or near the regulatory floodplain.
      “Structures proposed for the floodplain fringe area can be built provided that they are either elevated or flood proofed. There are very strict prohibitions against building in the floodway itself, however, agricultural structures are allowed provided that they can be designed and built such that flood waters are allowed to pass through the structure.”
  • Permit feesPublished (with conditions)

    Boone County building permits, primarily in unincorporated areas, with published fee schedules and category-specific calculations.

    • The current building permit fee schedule is effective June 1, 2026.
    • New-construction fees are based on project square footage; alteration/remodel fees are based on estimated construction cost.
    • Additional wastewater and driveway permit fees may apply.
    • Credit-card payments add a 2.35% convenience fee with a $1.55 minimum.
    • The schedule lists a $40 minimum non-commercial permit and $70 minimum commercial permit.
    • Construction without a permit is charged double fee.
    • Permits expire after 180 days of inactivity.
    • For non-commercial structures, the schedule uses a 0.00222 multiplier; for commercial structures, a 0.003 multiplier, with ICC construction-cost data updated each August.

    minimum non-commercial permit: 40 USD · minimum commercial permit: 70 USD · credit-card convenience fee: 2.35 percent (minimum $1.55) · construction without permit fee multiplier: double fee · fee schedule effective date: 2026-06-01

    “Building Permit Fees Effective June 1, 2026”
    2 more reviewed findings on this topic
    • Variable (with conditions) — Boone County building and related permits.
      “Fees for new construction are based on the square footage of the project. Fees for alterations/remodels are based on the estimated cost of construction. Additional fees apply for a waste water permit or driveway permit if applicable.”
    • Published (with conditions) — Boone County building permit fees.
      “Fees for new construction are based on the square footage of the project. Fees for alterations/remodels are based on the estimated cost of construction. Additional fees apply for a waste water permit or driveway permit if applicable.”
  • Permit processPublished (with conditions)

    Boone County residential and commercial building permit application process.

    • New buildings require a site drawing.
    • New onsite wastewater systems require a soils report and complete site plan.
    • Incomplete submissions are not accepted.
    • Applicants are notified of cost and payment instructions after processing.
    • Inspections must be scheduled by phone.
    • Commercial projects require three plan sets, a completed application and a $300 plan-review fee.
    • Commercial plan review has a minimum three-week review time.

    commercial plan review fee: 300 USD · commercial plan review time: >= 3 weeks

    “All new buildings require a site drawing to be submitted. If you are installing a new onsite wastewater system a soils report and complete site plan will also need to be submitted with the building permit application. Incomplete submissions will not be accepted.”
    One more reviewed finding on this topic
    • Published (with conditions) — Boone County building permit application process.
      “All new buildings require a site drawing to be submitted. If you are installing a new onsite wastewater system a soils report and complete site plan will also need to be submitted with the building permit application. Incomplete submissions will not be accepted.”

Missouri rules that apply here

  • Off-grid sanitationLimited

    Off-grid domestic wastewater treatment using onsite wastewater treatment systems where central sewer service is unavailable.

    • Onsite systems treat and dispose of domestic sewage on the property where generated.
    • A construction permit is generally required, including for residential property less than three acres, subject to county-specific exceptions.
    • Wastewater may not be discharged into a road ditch or onto the ground.
    • Local permitting authorities may impose additional requirements.

    residential lot threshold: < 3 acres (The exemption does not apply in some counties.)

    “Onsite wastewater treatment systems are sometimes referred to as "septic systems." These systems treat and dispose of domestic sewage on the property where it is generated.”
  • Agricultural exemptionAvailable (with conditions)

    Erection, maintenance, repair, alteration, or extension of farm buildings or farm structures as against county fire-protection or fire-prevention ordinances.

    • The exemption applies to fire protection or fire prevention ordinances adopted by counties in Missouri.
    • The statutory text addresses farm buildings and farm structures; it does not establish a general exemption from every zoning, building-code, floodplain, septic, or other land-use requirement.
    • Effective August 28, 2025.

    effective date: 2025-08-28

    “Notwithstanding any provision of law to the contrary, no fire protection or fire prevention ordinance adopted by any county in this state shall be exercised so as to impose regulations or to require permits with respect to the erection, maintenance, repair, alteration, or extension of farm buildings or farm structures.”
  • county zoning authorityGeneral

    Missouri counties adopting zoning regulations for unincorporated territory.

    • First-class charter counties are empowered under RSMo § 64.090; that section excludes first-class counties without a charter form of government.
    • A first-class noncharter county or a county of the second, third, or fourth class may establish county zoning under RSMo §§ 64.845 to 64.880 only after the zoning question is submitted to county voters and a majority of votes cast favors county zoning.
    • The authority applies to unincorporated portions or territory and does not apply to incorporated portions under § 64.090.
    • Section 64.090 excludes specified agricultural activities and certain farm structures, underground mining, and protects existing lawful uses subject to gradual elimination of nonconforming uses.
    “If a majority of the votes cast is in favor of county zoning, the county commission shall proceed with a program of county zoning”
  • county building authorityLimited

    County regulation of construction and issuance of building permits for buildings, including residential construction, in Missouri counties, with the practical focus on county-controlled areas outside incorporated territory.

    • RSMo § 64.170 grants the authority to counties of the first and second classification only.
    • The authority is subject to subsections 2 and 3.
    • A county that had not adopted a building code before August 28, 2001, under §§ 64.170 to 64.200, lacks authority to adopt one under those sections unless voters approve it.
    • The building-code authority vote is limited to voters in the affected area; a code affecting a county may not be voted on by citizens of incorporated territory.
    • The statute authorizes building regulations, building permits, inspections, licensing rules, and permit, license, and inspection fees.
    “the county commission in all counties of the first and second classification [...] is for this purpose empowered [...] to adopt [...] regulations to control the construction”

Still unanswered

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

  • Owner-builder exemption — Owner-builder exemptions from Boone County building requirements.
  • Minimum lot size — General minimum lot size in unincorporated Boone County.
  • Lot coverage — General lot-coverage limits in unincorporated Boone County.
  • Living in an RV — Long-term RV occupancy on private land in unincorporated Boone County.
  • Camping on your land — Temporary camping on private land in unincorporated Boone County.
5 more unanswered
  • Tiny homes
  • Well permit
  • Mandatory utility hookup
  • Subdividing land
  • Short-term rentals

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, Missouri

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

Boone County scores 62/100 on the Bolthole Index, a solid county profile. Its strengths: manageable long-term carry cost and mixed durability signals. Watch-outs: about 118,849 people within a 30-minute drive.

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

Boone County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Boone County Resource Management (On-Site Wastewater). 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.

How much does land cost in Boone County, Missouri?

Land in Boone County runs about $5,608 per acre, based on the latest county data.

What is the water situation in Boone County?

Boone County gets about 42.1" of rain a year, with severe drought in roughly 9% of years.

How remote is Boone County?

A representative private-land location has about 118,849 people within a 30-minute drive and 1,492,640 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.

Off-grid gear

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

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How Boone compares in Missouri

Compare side-by-side →See all 115 Missouri counties ranked →