Bolthole Index county-legal census · checked 2026-10-07
28 of Missouri's 115 counties — 24% — let an owner build their own home without a licensed contractor. That is the 35th-largest count of any state. The strongest of them on the Bolthole Index is Sullivan County (80/100). Every entry below cites the county’s own official source.
Rules change, and cities inside these counties set their own — treat this as a verified starting point, not legal advice. All 2952 counties nationwide → Missouri: no building codes → Missouri: no zoning → Missouri: no codes, no zoning → Missouri: rv living → Missouri: tiny homes → Missouri: no minimum home size → Full Missouri profile →
28 of 115 Missouri counties · sorted by Index score
Because unincorporated Sullivan County has no county building code or permit requirement, an owner may build their own home without a county building permit; Missouri also has n…
Missouri Data Portal – County Building Codes for Missouri ↗Statewide rule. A Missouri property owner installing, modifying, or repairing the owner's own on-site sewage disposal system, including in Douglas County. The owner must comply …
RSMo Section 701.055 — Property owners may install, modify or clean their own on-site sewage disposal system ↗Statewide rule. Homeowner installation of an onsite wastewater treatment system in Missouri, including potentially Lewis County if no stricter local rule applies. Homeowners may…
health.mo.gov ↗Statewide rule. Owner installation of an onsite wastewater treatment system by a homeowner in Shelby County, subject to the applicable permitting authority. The Missouri DHSS FA…
health.mo.gov ↗Statewide rule. Installation of a manufactured home on the owner's property in Missouri, including unincorporated Webster County, when the owner installs it for the owner's own …
RSMo Section 700.656 — Installers to be licensed by the commission ↗Statewide rule. A homeowner installing an onsite wastewater treatment system in Missouri, including St. Clair County subject to the local permitting authority. The homeowner mus…
health.mo.gov ↗Statewide rule. A homeowner installing the homeowner's own onsite wastewater treatment system in Missouri, including Mercer County. The official FAQ states that homeowners may i…
health.mo.gov ↗Missouri has no statewide residential building code and Pulaski County requires no building permit, so a property owner may build their own home; there is no state residential-c…
State of Missouri Data Portal - County Building Codes for Missouri ↗Homeowner installation of an on-site sewage system in Andrew County. All sewage systems must otherwise be installed by a Missouri state-registered installer. The county form sta…
Andrew County Address Request Form ↗Missouri has no statewide residential contractor license and Wayne County requires no building permit, so an owner may build their own residence without licensing.
Missouri Data - County Building Codes for Missouri ↗Statewide rule. A homeowner installing an onsite wastewater treatment system in Worth County. In some instances homeowners may install their own system. The homeowner must check…
health.mo.gov ↗Statewide rule. A homeowner installing an onsite wastewater treatment system in Missouri, including potentially Miller County. The homeowner must check with the local permitting…
Frequently Asked Questions | Missouri Department of Health and Senior Services ↗Missouri has no statewide residential building code and Benton County requires no building permit, so a property owner may build their own home; there is no state residential-co…
State of Missouri Data Portal - County Building Codes for Missouri ↗Missouri has no statewide residential contractor license and Reynolds County requires no building permit, so an owner may build their own residence without licensing.
Missouri Data - County Building Codes for Missouri ↗Landowner installation of an onsite wastewater treatment system in Monroe County. A wastewater permit is required after an application is completed and fees are paid. A landowne…
Wastewater & Septic System Inspections – Monroe County Health Department ↗Applications for development approval under Ray County's Zoning Regulations, including the building permit application listed by Ray County Planning & Zoning. The applicant may …
County Planning & Zoning – Ray County, Missouri ↗Unincorporated Johnson County: no county building permit is required, so there is no permit to be exempt from and you may build your own home. State licensing for electrical, pl…
Planning & Zoning ↗Statewide rule. Homeowner self-installation of an onsite wastewater treatment system in Nodaway County under Missouri's statewide OWTS framework, subject to the local permitting…
health.mo.gov ↗Unincorporated Lincoln County: no county building permit is required, so there is no permit to be exempt from and you may build your own home. State licensing for electrical, pl…
Planning and Zoning in Lincoln County, Missouri ↗Statewide rule. Installation of a manufactured home on the owner's property in Missouri, including unincorporated McDonald County. The person must install the manufactured home …
revisor.mo.gov ↗Statewide rule. A Missouri homeowner installing the homeowner's own onsite wastewater treatment system, including in Carroll County subject to the local permitting authority. Ho…
health.mo.gov ↗An agricultural structure built in unincorporated Franklin County; the source documents an agricultural-structure permit exemption, not a general owner-builder exemption for res…
Amendments to the 2021 Residential One- and Two-Family Dwelling Code ↗Unincorporated Lawrence County: no county building permit is required, so there is no permit to be exempt from and you may build your own home. State licensing for electrical, p…
Planning & zoning | Lawrence County govt ↗Unincorporated Callaway County: no county building permit is required, so there is no permit to be exempt from and you may build your own home. State licensing for electrical, p…
Callaway County Planning and Zoning Information ↗An owner of property in unincorporated Greene County may obtain a county permit as the permittee instead of identifying a separate contractor or installer on the county miscella…
Building Regulations - Resource Management ↗A homeowner installing, adding to, altering, or repairing the private onsite wastewater system serving the homeowner's permanent residence in Jasper County. The homeowner must o…
Environmental Services | Jasper County Missouri ↗A-1 agricultural district family dwellings seeking a building permit without rezoning. The housing site must be at least two acres. The owner/builder requesting the permit must …
co.buchanan.mo.us ↗Owner or immediate-family homeowner permits for detached single-family dwellings and accessory structures. The dwelling must be used solely for living purposes. The dwelling mus…
ecode360.com ↗Every county here has a full profile — water, land prices, hazard safety, seclusion, and the rest of its building rules. See the Missouri state page for all 115 counties ranked, or go back to the national list.
Off-grid gear
Building on land in one of these Missouri counties? The kit we'd start with:
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General guidance, not legal advice. Off-grid, building, and land-use rules are often set at the county level and change often. Verify with your county and state before acting. Data reviewed 2026-06-26.
