Lewis County, MO: No Building Permit

Unincorporated Lewis County, Missouri does not require a general residential building permit; county zoning remains unconfirmed^1,2. Canton issues city building permits and sets municipal zoning^3,4. Missouri DHSS handles Lewis County onsite-wastewater construction permits, while Canton and La Grange also require city approval for private sewage systems; applicable state health requirements still apply inside those cities^5,6,7.

At a glance

Building permit: No general county residential permit in unincorporated Lewis County¹
Private wells: Contractors need state permits; landowners may install their own well or pump without one^8,9
Zoning: County zoning is unconfirmed; Canton sets municipal zoning^2,4
Septic permits: DHSS handles county septic construction permits; Canton and La Grange also require city approval^5,6,7
RV or tiny-home living: No Lewis County rule was confirmed; ask the County Commission^2,10
Owner-installed septic: Allowed only in some instances; a permit may still be required¹¹
Septic soils: Only 0.4% of soils are rated “not limited” for conventional drain fields; evaluate the site¹²
State-highway driveway: A MoDOT right-of-way permit is required¹³

Who to call

Also useful

Lewis County Commission

Starting point for county building, zoning, floodplain and parcel-specific land-use questions when no dedicated office is listed

573-767-5476

Lewis County Courthouse, 100 East Lafayette Street, Monticello, MO 63457

Septic permits

Missouri DHSS Onsite Wastewater Treatment Program

Onsite-wastewater construction permits and application numbers for Lewis County

(573) 751-6095 ext. 5

930 Wildwood Dr, Jefferson City, MO 65102

Online permits →

One more officeRoads & driveways

Roads & driveways

Lewis County Road & Bridge

County-road access questions

573-767-5212

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

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

Unincorporated Lewis County does not require a general county residential building permit.

Unincorporated Lewis County does not require a general county residential building permit¹. Missouri adopts fire and building codes locally, and Lewis County does not list a building or code-enforcement department^1,14. Inside Canton, the city Building Inspector must issue a building permit before erection, additions or structural alterations begin³. Septic approval remains separate: Missouri DHSS handles Lewis County onsite-wastewater construction permits, and Canton also requires city approval for private sewage systems without displacing applicable state or county health requirements^5,6. A driveway on MoDOT right-of-way and development in a regulated flood hazard area can require separate approvals^13,15.

Who is the Lewis County building department, and who do you call?

Lewis County does not list a dedicated building or code-enforcement department, so the practical first call for an unincorporated parcel is the Lewis County Commission.

Lewis County does not list a dedicated building or code-enforcement department, so the practical first call for an unincorporated parcel is the Lewis County Commission^1,10. The Commission is at the Lewis County Courthouse, 100 East Lafayette Street in Monticello, and its phone number is 573-767-5476¹⁰. Ask the Commission to confirm whether the parcel lies in any locally regulated area and who handles floodplain questions. County-road access questions can go to Lewis County Road & Bridge at 573-767-5212¹⁶. A driveway connecting to MoDOT right-of-way is different: construction or modification requires a state right-of-way permit¹³.

Does Lewis County, Missouri have zoning?

We could not confirm whether unincorporated Lewis County has county zoning; ask the Lewis County Commission about allowed uses, setbacks, dwelling size and parcel-specific restrictions.

We could not confirm whether unincorporated Lewis County has county zoning; ask the Lewis County Commission about allowed uses, setbacks, dwelling size and parcel-specific restrictions^2,10. Missouri law allows qualifying counties to establish zoning after voter approval, but that authority alone does not establish whether Lewis County adopted zoning¹⁷. Inside Canton, municipal zoning applies; confirm the parcel’s district with the city because its website’s zoning information is not the final authority on zone locations^4,18. Canton’s zoning does not replace septic approvals: the city requires private-sewage approval and preserves additional state or county health requirements⁶. Missouri DNR must approve subdivisions, mobile-home parks and campgrounds planning onsite wastewater systems, even when a general county residential building permit is unnecessary^1,19.

How do septic permits work in Lewis County?

Missouri DHSS handles Lewis County onsite-wastewater construction permits; call (573) 751-6095 ext.

Missouri DHSS handles Lewis County onsite-wastewater construction permits; call (573) 751-6095 ext. 5 or use its online form to request an application number⁵. Begin with the permitting authority because the application process varies; do not start installation or repairs until a construction permit is issued or an exemption is confirmed¹⁹. Homeowners may install their own septic systems only in some instances, and self-installation may still require a construction permit; ask DHSS before choosing that route^5,11. State onsite-sewage application fees are temporarily suspended effective August 28, 2026²⁰. Canton also requires city private-sewage approval, and La Grange requires its Inspector’s written permit before private-system construction where public sewer is unavailable; both preserve additional state or county health requirements^6,7. Only 0.4% of Lewis County soils are rated “not limited” for conventional drain fields: arrange a site evaluation and consider whether an engineered system is needed, rather than assuming septic is impossible¹².

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

We could not confirm a Lewis County rule that answers full-time RV living, temporary camping, or tiny-home occupancy on private land in unincorporated Lewis County.

We could not confirm a Lewis County rule that answers full-time RV living, temporary camping, or tiny-home occupancy on private land in unincorporated Lewis County^2,10. Because Lewis County zoning itself remains unconfirmed, a missing online rule is not permission to occupy a parcel without limits². Ask the Lewis County Commission about the specific parcel and proposed use before buying, moving an RV onto the land, or ordering a tiny home¹⁰. Wastewater rules still apply to off-grid plans: Missouri prohibits treating a lack of central sewer as permission to discharge sewage onto the ground or into a road ditch, and most onsite systems require a permit unless an exemption applies^11,20.

How do you build a home in Lewis County, step by step?

Confirm the parcel’s jurisdiction.

Confirm the parcel’s jurisdiction. Ask the Lewis County Commission about unincorporated county zoning and floodplain administration; inside Canton, city zoning and building permits apply^2,3,4,10.

Contact Missouri DHSS for the onsite-wastewater application process and an application number; obtain a construction permit or confirmed exemption before work starts^5,19. Include city private-sewage approval for Canton or La Grange parcels^6,7.

Arrange a septic site evaluation early because only 0.4% of Lewis County soils are rated “not limited” for conventional drain fields; an engineered system may be needed¹².

Use a permitted well contractor or confirm the landowner self-installation exception, which still requires compliance with Missouri well-construction rules^8,9.

Ask Lewis County Road & Bridge about county-road access, or obtain a MoDOT right-of-way permit for a driveway on state right-of-way^13,16.

What should you check before buying land in Lewis County?

Start with septic feasibility: only 0.4% of Lewis County soils are rated “not limited” for a conventional drain field, so make the purchase contingent on a satisfactory site and soil evaluation when wastewater is not already established¹². Missouri does not require a septic inspection before every sale, but a lender or buyer may request one and then a licensed individual must perform it¹¹. For a private well, contractors need state permits, while a landowner may install the landowner's own well or pump without a permit but must still follow Missouri well-construction rules^8,9. Confirm legal and physical access before closing; a driveway in MoDOT right-of-way needs a state permit¹³. Lewis County's typical effective property-tax rate is about 0.7%, and the median annual property-tax bill is about $875¹². Ask the County Commission about county zoning and floodplain administration; inside Canton, verify the municipal zoning designation with the city^2,4,10.

Watch-outs

Lewis County zoning, setbacks, minimum dwelling size, RV occupancy and tiny-home occupancy remain unconfirmed for unincorporated land; ask the County Commission, and verify Canton parcels under city zoning^2,4,10.
A general county residential building permit is not required, but septic and state-right-of-way permits are separate approvals^1,13,20.
Only 0.4% of Lewis County soils are rated “not limited” for conventional drain fields; a site evaluation may identify an engineered solution rather than rule out septic¹².

Sources

20 official pages, each quoted and re-checked · written October 12, 2026

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

Off-grid gear

Going off-grid in Lewis 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.

Compared with neighboring counties

Rule	Lewis County	Clark County	Knox County	Marion County	Shelby County	Scotland County	Ralls County
Building permit	Not required	Not required	Limited	Required	Not required	Not required	Required
County zoning	Not published	No	Not published	Yes	No	Not published	Yes
Septic permits	MO DHSS Onsite Wastewater Treatment Program	DHSS	MO Dept. of Health & Senior Services	County Health Dept.	MO Dept. of Health & Senior Services	MO DHSS Onsite Wastewater Treatment Program	County Health Dept.

Cities and towns in Lewis 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 covered: La Belle

Answers from the rulebook for Lewis County

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

Missouri rules that apply here

Building permitLimited
Building permits for construction in Missouri: no statewide permit is shown; first and second classification counties may adopt building regulations and permits if voters have approved
- Authority is an option for county commissions in counties of the first and second classification, not a statewide mandate
- A county that had not adopted a building code before August 28, 2001 needs voter approval, voted only by voters outside incorporated territory
- Municipalities and other counties must be checked locally
- This claim is about the county enabling authority only; the state septic rule (RSMo 701.031) was not used as a building-permit requirement
“the county commission in all counties of the first and second classification, as provided by law, is for this purpose empowered, subject to the provisions of subsections 2 and 3 of this section, to adopt by order or ordinance regulations to control the construction”
RSMo 64.170 County commissions control construction - issue building permits ↗Re-checked Nov 6, 2026
Owner-builder exemptionConditional
Homeowner installation of an onsite wastewater treatment system in Missouri, including potentially Lewis County if no stricter local rule applies.
- Homeowners may install their own system only in some instances.
- A construction permit may still be required.
- The homeowner must check with the local permitting authority.
- The state page encourages use of a registered installer.
“In some instances, homeowners may install their own system.”
health.mo.gov ↗Re-checked Sep 29, 2026
2 more reviewed findings on this topic
- Conditional — Homeowner installation of an onsite wastewater treatment system under Missouri rules, including systems potentially located in Lewis County.
  “In some instances, homeowners may install their own system. However, you must check with the local permitting authority. Additionally, a construction permit may be required. We strongly encourage you to work with a registered installer.”
  health.mo.gov ↗Re-checked Oct 4, 2026
- Available (with conditions) — A property owner installing, modifying, or repairing that owner's on-site sewage disposal system.
  “Nothing in sections 701.053 to 701.055 shall preclude property owners from installing, modifying or repairing their own on-site sewage disposal system”
  RSMo 701.055 — Property owners may install, modify or clean their own on-site sewage disposal system ↗Re-checked Nov 4, 2026
Building code adoptedPartial
Missouri statewide legal framework for building-code adoption by counties and other communities; the statutes authorize local adoption rather than establishing one uniformly adopted statewide building code.
- County authority under RSMo 64.170 applies to counties of the first and second classification.
- A county that had not adopted a building code before August 28, 2001 must obtain voter approval before adopting under RSMo 64.170 to 64.200.
- The adoption vote is limited to voters in the affected area; a code affecting a county is not voted on by citizens of incorporated territory.
- A county adopting under RSMo 64.180 must use a current nationally recognized building code edition from calendar year 1999 or later, as amended.
- A county building ordinance may not conflict with liquefied petroleum gas installation requirements governed by RSMo 323.020.
- A community may incorporate a code by reference only if it otherwise has legal power to adopt the ordinance.
- A code incorporated by reference must be filed with the community clerk and available for public inspection for 90 days before adoption.
- An ordinance adopting a code by reference must state the penalty separately rather than incorporate the penalty by reference.
- RSMo 67.280 defines community to include any county, fire protection district, or municipality, and municipality to include an incorporated city, town, or village.
“Because fire and building codes are adopted at the local level in Missouri”
RSMo Section 64.170 ↗Re-checked Sep 11, 2026
2 more reviewed findings on this topic
- Partial — Residential building-code adoption by Missouri counties, particularly construction in unincorporated county territory.
  “the county commission in all counties of the first and second classification [...] is for this purpose empowered [...] to adopt [...] regulations”
  RSMo § 64.170 — County commissions control construction; issue building permits ↗Re-checked Oct 1, 2026
- Partial — County adoption of residential building codes in Missouri, with the resulting regulations applicable to unincorporated territory when adopted under the statutory authority.
  “the county commission in all counties of the first and second classification, as provided by law, is for this purpose empowered”
  RSMo Section 64.170 — County commissions control construction; issue building permits ↗Re-checked Oct 1, 2026
InspectionsLimited
Construction, major modification, or major repair of an on-site sewage disposal system for which RSMo 701.046 requires notice and an application; this is not a general statewide inspection rule for all buildings.
- The city, county, or department must receive notice and an opportunity to inspect before completion.
- A registered contractor must notify the authority before 9:00 a.m. on the day before completion; an unregistered person must notify it before 9:00 a.m. on the second day before completion.
- The system must remain available for a complete inspection under the state standard until 3:00 p.m. on the completion day unless the authority confirms earlier inspection and approval.
- The system may not be closed or completed if inspection finds it does not meet the state standard; the authority must provide conspicuous notice at inspection and written confirmation of the result, or of no inspection, within three working days of completion.
“without providing notice and an opportunity for inspection by the city, county or department as provided in this section.”
RSMo 701.050 — Construction or repair notice, requirements and inspection ↗Re-checked Nov 4, 2026
Zoning districtsPartial
Missouri statutory authority for counties to create zoning districts in unincorporated territory; this does not establish or publish the actual zoning districts for any particular county.
- The statute applies to unincorporated territory of counties subject to sections 64.211 to 64.295.
- Actual district boundaries, regulations, and maps depend on county adoption and are not supplied by this statewide statute.
- District regulations must be uniform for each class or kind of building or land use within each district, although regulations may differ between districts.
- The regulations must be made in accordance with a comprehensive plan.
“the unincorporated territory may be divided into districts of such number, shape and area as may be deemed best suited”
RSMo Section 64.261 — Zoning districts, creation, regulations ↗Re-checked Oct 5, 2026
Minimum dwelling sizeDistrict specific (with conditions)
Potential county zoning controls on the size of residential buildings in unincorporated portions of first-class counties other than first-class counties without a charter form of government.
- The county commission is authorized to regulate by order in accordance with a comprehensive plan.
- The statute does not state a statewide minimum dwelling-size measurement.
- The statute expressly excludes incorporated portions of counties and identifies additional agricultural, rice-farming, flood-irrigation, farm-structure, and underground-mining exclusions.
“except in counties of the first class not having a charter form of government [...] in the unincorporated portions of the county [...] size of buildings”
RSMo § 64.090 — Planning and zoning powers of county commission ↗Re-checked Nov 4, 2026
SetbacksSpecified
Size of yards, courts and other open spaces in unincorporated portions of second- and third-class counties with county zoning; setbacks left to such counties
- Power exists only for counties to which sections 64.510 to 64.690 apply under section 64.510
- Exercised only after approval by vote of the people as provided in section 64.530
- Must be done by order of record and in accordance with a comprehensive plan
- Applies only to unincorporated portions of the county
- Does not apply to crops, livestock, orchards, forestry, or farm buildings used for such purposes outside the flood hazard area map area
- Existing lawful uses protected; ordinances adopted before March 4, 1991 unaffected
“the size of yards, courts and other open spaces”
RSMo 64.620 Building restrictions - limitations on regulations (second and third class counties) ↗Re-checked Nov 6, 2026
Lot coverageSpecified
Percentage of lots that may be occupied in unincorporated portions of second- and third-class counties with county zoning; lot coverage left to such counties
- Power exists only for counties to which sections 64.510 to 64.690 apply under section 64.510
- Exercised only after approval by vote of the people as provided in section 64.530
- Must be done by order of record and in accordance with a comprehensive plan
- Applies only to unincorporated portions of the county
- Does not apply to crops, livestock, orchards, forestry, or farm buildings used for such purposes outside the flood hazard area map area
- Existing lawful uses protected; ordinances adopted before March 4, 1991 unaffected
“the percentage of lots that may be occupied”
RSMo 64.620 Building restrictions - limitations on regulations (second and third class counties) ↗Re-checked Nov 6, 2026
Camping on your landLimited
Developments where land is sold or leased for camping in recreational vehicles (recreational developments) under the state wastewater rule 10 CSR 20-6.030; this is a wastewater-disposal rule, not a zoning rule on camping generally
- Applies only when land is sold or leased for the purpose of camping in recreational vehicles.
- To qualify as a recreational development, restrictive covenants must prohibit continuous year-round living on the lot, and no cabins or other structures that could be used for year-round residential purposes are allowed.
- Minimum lot size of 20,000 sq ft applies where individual on-site wastewater treatment facilities are used; no reduction from the minimum lot size determined by the geohydrologic evaluation, though a one-half reduction as indicated by the soils report may be allowed.
- Where sewage dump stations provide collection and treatment, they count as centralized collection and treatment.
- The developer must submit a copy of the restrictive covenants with any plans for dump stations or centralized systems.
- Any residential housing development required to obtain department approval must get written approval before sale or lease of any lot or start of construction.
- Rule text says it does not preclude local, municipal, county or other lawful authority from adopting equal or more stringent subdivision, sewer or on-site system regulations.
- Rule was last amended with an effective date of Jan. 30, 2025.
- The state rule does not itself regulate temporary camping on private land outside such developments; that is left to local zoning.
minimum lot size, recreational development with individual on-site wastewater treatment: >= 20000 square feet (one-half reduction per soils report may be allowed; no reduction from geohydrologic evaluation minimum)
“a development is considered recreational when land is sold or leased for the purpose of camping in recreational vehicles. in order to be considered a recreational development, restrictive covenants must prohibit continuous year-round living on the lot and no cabins or other structures will be allowed that could be used for year-round residential purposes.”
10 CSR 20-6 Permits (incl. 10 CSR 20-6.030 Disposal of Wastewater in Residential Housing Developments), Missouri Secretary of State, Code of State Regulations ↗Re-checked Nov 6, 2026
Who permits septicMixed (with conditions)
Onsite wastewater treatment systems statewide in Missouri.
- DHSS administers minimum standards and permits through DHSS, local contract authorities, or local authorities operating under ordinance.
- County or city governments may adopt standards stricter than the state standard.
- DNR regulates lagoons serving anything other than single-family residences, systems discharging to surface waters, systems treating flows greater than 3,000 gallons per day and dispersing through soil absorption systems, and industrial wastewater systems.
- DNR approval is required for subdivisions, mobile home parks, and campgrounds when OWTS use is planned.
domestic wastewater flow threshold: <= 3000 gallons per day (DNR regulates systems with flows greater than 3,000 gallons per day when wastewater is dispersed through soil treatment or absorption systems)
“DHSS OWTS permitting falls under one of three authority types: DHSS Onsite Program, Local Authority (contract), or Local Authority via Ordinance. The application process varies by permitting authority.”
OWTS Construction Permit Process ↗Re-checked Oct 1, 2026
2 more reviewed findings on this topic
- State (with conditions) — Onsite wastewater treatment system construction permits in Lewis County, MO (DHSS-listed permitting authority)
  “agency: dhss authority type: dhss address: 930 wildwood dr, jefferson city, mo 65102 county: lewis phone: (573) 751-6095 ext. 5 website: n/a alert: submit the information at owts application number request form to request an application number.”
  OWTS Construction Permit Process (county authority list, page 11) - Missouri DHSS ↗Re-checked Nov 13, 2026
- Mixed — Missouri wastewater treatment systems, including domestic onsite systems, larger-flow systems, direct discharges, lagoons, subdivisions, and industrial wastewater.
  “In Missouri, different state and local agencies are responsible for regulating wastewater treatment systems.”
  On-site Septic Systems and Subdivisions ↗Re-checked Sep 11, 2026
Septic permitRequired
Installing or repairing most onsite wastewater treatment systems in Missouri, including residential systems subject to state permitting.
- A construction permit is required before installing or repairing most OWTS.
- Some single-family residential lots may be exempt.
- For residential property less than three acres, a permit is required; the exemption does not apply in some counties, so the county authority must be checked.
- Work should not begin until a permit is issued or an exemption is confirmed.
- Effective August 28, 2026, application fees for onsite sewage disposal system construction, modifications, and repairs are temporarily suspended.
residential lot threshold: < 3 acres (The exemption does not apply in some counties.) · temporary permit-fee suspension effective date: 2026-08-28 (Applies to application fees associated with onsite sewage disposal system construction, modifications, and repairs.)
“A construction permit is required before installing or repairing most onsite wastewater treatment systems (OWTS). Some single family residential lots may be exempt from permitting.”
OWTS Construction Permit Process ↗Re-checked Sep 11, 2026
4 more reviewed findings on this topic
- Required — Installing or repairing most onsite wastewater treatment systems in Missouri, including systems in Lewis County unless an applicable exemption or local rule changes the process.
  “A construction permit is required before installing or repairing most onsite wastewater treatment systems (OWTS). Some single family residential lots may be exempt from permitting. The first step of the permitting process is to determine the agency that has permitting authority where the work is being done.”
  OWTS Construction Permit Process ↗Re-checked Sep 26, 2026
- Required — Most onsite wastewater treatment installations and repairs in Missouri, subject to the local authority and residential exemptions.
  “A construction permit is required before installing or repairing most onsite wastewater treatment systems (OWTS).”
  OWTS Construction Permit Process ↗Re-checked Sep 29, 2026
- Required — Installing or repairing most onsite wastewater treatment systems statewide in Missouri.
  “A construction permit is required before installing or repairing most onsite wastewater treatment systems (OWTS). Some single family residential lots may be exempt from permitting.”
  OWTS Construction Permit Process ↗Re-checked Oct 1, 2026
- Required — Proposed campgrounds, mobile home parks, and subdivisions planning to use onsite wastewater treatment systems anywhere in Missouri.
  “DNR must approve subdivisions, mobile home parks and campgrounds if the use of OWTS is planned.”
  OWTS Construction Permit Process ↗Re-checked Oct 1, 2026
Septic inspectionLimited
Inspection or evaluation of existing onsite wastewater systems in connection with Missouri real-estate transfers.
- Local public health agencies generally no longer inspect existing systems for real-estate transfers.
- A private licensed inspector may perform an inspection or evaluation.
- A lender, buyer, or other transaction participant may require an assessment.
- Some local standards may be more stringent than state regulations.
- Inspections and evaluations are distinct; an inspection includes a hydraulic test, while an evaluation does not.
“For the most part, local public health agencies no longer inspect existing systems related to real estate transfer. The help of a licensed inspector can be obtained to check the condition of the system.”
Onsite Wastewater Treatment System Inspections Versus Evaluations ↗Re-checked Sep 11, 2026
2 more reviewed findings on this topic
- Limited — OWTS inspections or evaluations connected with Missouri real-estate transactions.
  “if a lender or buyer requests an inspection/evaluation, it must be conducted by a licensed individual.”
  health.mo.gov ↗Re-checked Sep 29, 2026
- Limited — Inspections of existing onsite sewage systems in connection with property sales statewide in Missouri.
  “Missouri Department of Health and Senior Services' (DHSS) rules governing onsite sewage systems cover minimum construction requirements, system inspections at the time of property sales, and requirements for percolation testers and soil evaluators.”
  health.mo.gov ↗Re-checked Oct 1, 2026
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.”
health.mo.gov ↗Re-checked Sep 11, 2026
One more reviewed finding on this topic
- Allowed (with conditions) — Use of onsite wastewater treatment systems as off-grid sanitation where central sewer service is unavailable in Missouri.
  “In Missouri, where central sewer service is not available, homeowners and small business owners use various types of onsite wastewater treatment systems (OWTS).”
  Onsite Wastewater Treatment ↗Re-checked Oct 1, 2026
Well permitRequired
Construction or repair of a water well in Lewis County when performed by a non-restricted well installation contractor, and contracted or directed well or pump installation activities.
- A non-restricted permit is required to drill, construct, repair, reconstruct, plug, or install pumps or pumping equipment in a well.
- A restricted water-well or pump-installation permit is required for someone to contract these activities or direct the installation.
- A $150 permit fee applies to each water-well and pump permit; the source states this fee is effective April 1, 2024.
- Permit fees must be renewed annually by October 1.
- A 40% late fee applies if permits are not paid by October 1, and permits are cancelled if not renewed by October 31.
- The rule is statewide and applies in Lewis County; the source does not identify a Lewis County-specific override.
permit fee: 150 USD (per applicable water-well or pump permit; effective April 1, 2024) · permit renewal deadline: October 1 · late renewal fee: 40 percent (if not paid by October 1)
“A non-restricted permit is required to drill, construct, repair, reconstruct, plug, or install pumps or pumping equipment in a well.”
Water Wells - PUB2945 ↗Re-checked Oct 6, 2026
4 more reviewed findings on this topic
- Limited — A landowner personally installing the landowner's own water well or pump in Lewis County.
  “Landowners may install their own well or pump without a permit pursuant to the above mentioned law and rules.”
  Water Wells - PUB2945 ↗Re-checked Oct 6, 2026
- Required — A person or contractor conducting regulated work to drill, construct, repair, reconstruct, plug, or install pumps or pumping equipment in a water well, heat-pump well, monitoring well, or related well in Missouri.
  “A non-restricted permit is required to drill, construct, repair, reconstruct, plug, or install pumps or pumping equipment in a well.”
  Well and Pump Installation Contractor Permitting ↗Re-checked Oct 1, 2026
- Limited — Construction or repair of water wells, installation or replacement of pumps, and associated plumbing and electrical work in Missouri.
  “A non-restricted water well installation permit is required to construct or repair a water well in Missouri.”
  Water Wells - PUB2945 ↗Re-checked Oct 5, 2026
- Limited — Construction or alteration of a public well serving a Missouri public water system.
  “Public water systems must receive written approval from the PDWB before constructing or altering a public well”
  Who Regulates Water Wells in Missouri? - PUB4001 ↗Re-checked Oct 5, 2026
Mandatory utility hookupSewer (with conditions)
Missouri state law preserves the authority of specified local governments and districts that own or operate a sewage-collection-and-treatment sewer system to require connection by owners of houses, buildings, or other facilities within that entity's territory.
- This is an authorization for the applicable city, town, village, sewer district, public water supply district, municipality, political subdivision, or district; it is not a statewide mandate that every property connect.
- The entity must own or operate a sewer system providing collection and treatment of sewage.
- The house, building, or other facility must be within the municipality, political subdivision, or district.
- The sewer system must be available.
- The statute identifies sewer districts organized under chapter 204 or chapter 249 and public water supply districts organized under chapter 247 among the entities whose authority is preserved.
“to require the owners of all houses, buildings or other facilities [...] to connect to the sewer system [...] when such sewer system is available.”
Missouri Revisor of Statutes — RSMo § 644.027 ↗Re-checked Nov 4, 2026
Agricultural exemptionAvailable (with conditions)
Farm buildings and farm structures used for agricultural purposes under the county building and land-use restriction provisions of RSMo sections 64.800 to 64.905.
- The exemption does not apply within incorporated portions of counties.
- The exemption applies to raising crops, livestock, orchards, or forestry and to specified rice-farming or flood-irrigation impoundments.
- For farm buildings or farm structures, the area must not be within the area shown on the flood hazard area map.
- The statute preserves the validity of county ordinances or orders adopted before March 4, 1991.
- Other laws and local requirements may still apply.
rice-farming or flood-irrigation berm height: <= 18 inches (small berms placed around a field to hold water for growing rice or flood irrigation)
“This section shall not apply to the erection, maintenance, repair, alteration or extension of farm buildings or farm structures used for such purposes in an area not within the area shown on the flood hazard area map.”
RSMo Section 64.890 — Building and land use restrictions; exemptions ↗Re-checked Oct 5, 2026
4 more reviewed findings on this topic
- Available (with conditions) — Erection, maintenance, repair, alteration, or extension of farm buildings or farm structures as against county fire-protection or fire-prevention ordinances.
  “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.”
  RSMo Section 64.003 — Farm buildings and farm structures ↗Re-checked Sep 11, 2026
- Available (with conditions) — Erection, maintenance, repair, alteration, or extension of farm buildings or farm structures used for agricultural purposes under RSMo section 64.890, outside incorporated portions of counties and outside areas shown on flood hazard area maps.
  “This section shall not apply to the erection, maintenance, repair, alteration or extension of farm buildings or farm structures used for such purposes [...]”
  RSMo Section 64.890 ↗Re-checked Oct 1, 2026
- Available (with conditions) — Farm buildings and farm structures statewide, with respect to county fire-protection and fire-prevention ordinances.
  “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 [...]”
  revisor.mo.gov ↗Re-checked Oct 1, 2026
- Available — Erection, maintenance, repair, alteration, or extension of farm buildings or farm structures with respect to county fire-protection or fire-prevention ordinances.
  “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.”
  RSMo Section 64.003 — Farm buildings and farm structures ↗Re-checked Oct 5, 2026
Subdividing landLimited
Subdivision plats in the unincorporated areas of counties covered by RSMo section 64.070 after the county commission adopts subdivision regulations.
- The county commission must first adopt subdivision regulations.
- The plat must first be submitted to the planning commission.
- If the county planning commission does not report upon the plat within thirty days, it may then be deemed approved.
- If amended or rejected by the planning commission, the action may be overruled and the plat approved only by the county commission, with the reasons for overruling spread upon the county commission minutes.
- The recorder of deeds may not record the plat until receiving a certificate of authority from the county zoning enforcement officer.
- The statute also permits a county planning commission, upon written request of an incorporated area's legislative body where there is no municipal planning commission, to pass upon subdivision plats within that incorporated area; those plats are subject to county planning commission rules and approval procedures.
planning commission reporting period: 30 days (If no report is made, the plat may then be deemed approved.)
“After the county commission shall have adopted such subdivision regulations, no plat of a subdivision of land within the unincorporated area of such county [...]”
RSMo Section 64.070 ↗Re-checked Oct 1, 2026
3 more reviewed findings on this topic
- Regulated (with conditions) — Property subdivision or development in Missouri, including Lewis County to the extent state jurisdiction applies.
  “Anyone subdividing or developing property must comply with DNR residential development regulations”
  Onsite Wastewater Treatment Resources ↗Re-checked Sep 29, 2026
- Regulated (with conditions) — Subdivision or development involving onsite wastewater systems in Missouri, including Lewis County when state rules apply.
  “DNR must approve subdivisions, mobile home parks and campgrounds if the use of OWTS is planned. Developers as well as property owners in unapproved developments should contact DNR regarding their residential housing unit requirements.”
  Resources | Onsite Wastewater Treatment ↗Re-checked Oct 4, 2026
- Limited — Subdivision regulations adopted by Missouri cities, towns, or villages under RSMo section 89.410.
  “The planning commission shall recommend and the council may by ordinance adopt regulations governing the subdivision of land within its jurisdiction.”
  RSMo Section 89.410 ↗Re-checked Oct 1, 2026
Driveway accessRequired
Construction or modification of driveways within MoDOT right-of-way statewide.
- A permit is required for construction of driveways and modifications to existing driveways on MoDOT right-of-way.
- An initial online request must be submitted for each planned listed activity.
- Engineered plans, traffic studies, hydraulic analysis, traffic-control plans, surety deposits, or performance bonds may be required depending on the work.
- The rule does not establish a permit requirement for driveways outside MoDOT right-of-way.
“We require you to obtain a permit to work on MoDOT's Right of Way for: Construction of driveways”
Permits | Missouri Department of Transportation ↗Re-checked Sep 11, 2026
Building in a floodplainLimited
Projects including mining, dredging, building construction, and other dirt-moving activities in designated flood hazard areas within participating Missouri jurisdictions.
- The source describes local county or city flood damage reduction ordinances rather than one uniform statewide ordinance.
- The project must be within a participating jurisdiction.
- The project must be within a designated flood hazard area.
- The cited rule does not apply if either condition is absent.
- Covered projects must not raise flood heights.
“Some jurisdictions (for example, county, city) require any projects in certain floodplains do not raise flood heights.”
Laws and Regulations That Might Affect You if You Mine Sand or Gravel From Missouri Streams ↗Re-checked Sep 11, 2026
One more reviewed finding on this topic
- Required — All development in a Missouri floodplain, administered through the applicable community floodplain permitting process.
  “Regardless, some type of permit MUST be issued for ALL development in the floodplain.”
  Floodplain Forms ↗Re-checked Oct 5, 2026
Permit feesPublished (with conditions)
Missouri Department of Natural Resources air construction permits statewide.
- Fees apply to air construction permits, not to every Missouri building or land-use permit.
- Construction permit fees include a filing fee and an hourly processing fee.
- The filing fee depends on the type of construction permit.
- The listed fees are effective January 1, 2026.
- Fees applicable until December 31, 2025 are available on the Air Construction Permit Fees white sheet.
- A convenience fee is charged for electronic payment.
portable source relocation filing fee: 300 USD · minor permit filing fee: 300 USD · minor permit processing fee: per 100 USD (hour) · general permit filing fee: 700 USD · new source review filing fee: 6000 USD (plus $100 per hour processing fee) · prevention of significant deterioration filing fee: 6000 USD (plus $100 per hour processing fee) · hazardous air pollutant filing fee: 6000 USD (plus $100 per hour processing fee) · temporary or pilot filing fee: 250 USD (plus $100 per hour processing fee)
“Construction permit fees include a filing fee and an hourly processing fee. The filing fee is dependent on the type of construction permit.”
Air Construction Permits ↗Re-checked Sep 11, 2026
2 more reviewed findings on this topic
- Published (with conditions) — Missouri onsite sewage-disposal construction, modification, and repair application fees.
  “application fees [...] will be temporarily suspended.”
  OWTS Construction Permit Process ↗Re-checked Sep 29, 2026
- Published (with conditions) — Missouri onsite wastewater treatment system construction, modification, and repair application fees administered under the statewide DHSS OWTS program.
  “Effective August 28, 2026, [...] the application fees associated with on-site sewage disposal system construction, modifications, and repairs will be temporarily suspended.”
  OWTS Construction Permit Process ↗Re-checked Oct 5, 2026
Permit processPublished (with conditions)
Installation or repair of most onsite wastewater treatment systems in Missouri.
- Some single-family residential lots may be exempt from permitting.
- The applicant must determine which agency has permitting authority where the work is being done.
- DHSS permitting may be administered by the DHSS Onsite Program, a local authority under contract, or a local authority via ordinance.
- Work should not begin until a permit has been issued or an exemption has been confirmed.
- DHSS regulates single-family residential systems and onsite or cluster systems treating domestic wastewater flows of 3,000 gallons per day or less that disperse wastewater through soil treatment or absorption systems.
- DNR regulates other systems, including non-single-family lagoons, systems discharging to surface waters, systems over 3,000 gallons per day, and industrial wastewater systems.
- DNR must approve subdivisions, mobile home parks, and campgrounds if OWTS use is planned.
domestic wastewater flow threshold: <= 3000 gallons per day (Systems above this threshold are regulated by DNR when they disperse wastewater through soil treatment or absorption systems.)
“A construction permit is required before installing or repairing most onsite wastewater treatment systems (OWTS). Some single family residential lots may be exempt from permitting.”
OWTS Construction Permit Process ↗Re-checked Oct 5, 2026
3 more reviewed findings on this topic
- Published (with conditions) — Missouri OWTS permitting, including the process applicable where the state or a local authority administers the system.
  “Contact the local administrative authority to begin the permit process.”
  OWTS Construction Permit Process ↗Re-checked Sep 29, 2026
- Published (with conditions) — Missouri OWTS permit applications, including systems potentially located in Lewis County.
  “DHSS OWTS permitting falls under one of three authority types: DHSS Onsite Program, Local Authority (contract), or Local Authority via Ordinance. The application process varies by permitting authority. Work should not begin until a permit has been issued or an exemption to permitting has been confirmed by the appropriate permitting authority.”
  OWTS Construction Permit Process ↗Re-checked Oct 4, 2026
- Published (with conditions) — Permit applications for work on Missouri Department of Transportation right-of-way statewide.
  “Contact the Traffic Specialist a minimum of 48 hours prior to beginning work and for all necessary inspections.”
  Permit Process | Missouri Department of Transportation ↗Re-checked Sep 11, 2026
county zoning authorityLimited
Missouri county zoning authority over unincorporated land.
- RSMo § 64.850 applies to counties of the first class without a charter and counties of the second, third, or fourth class.
- RSMo § 64.620 applies to counties of the second or third class to which §§ 64.510–64.690 apply.
- Adoption under §§ 64.510–64.690 requires approval by vote of the people under § 64.530.
- The authority applies in unincorporated portions and not incorporated portions.
- The regulations must be in accordance with a comprehensive plan.
- Under § 64.090, the zoning power does not apply to raising crops, livestock, orchards, or forestry; seasonal or temporary rice-farming or flood-irrigation impoundments; specified farm structures outside mapped flood-hazard areas; or underground mining entered through shafts outside mapped flood-hazard areas.
- Existing lawful uses and specified public-utility services are protected under the cited statutory schemes.
“the county commission of any county of the first class not having a charter form of government, or of any county of the second, third or fourth class may, after approval by vote of the people as provided in section 64.845, regulate and restrict, by order of record, in the unincorporated portions of the county, the height, number of stories, and size of buildings, the percentage of lots that may be occupied, the size of yards, courts and other open spaces, the density of population, the location and use of buildings, structures and land for trade, industry, residence or other purposes.”
RSMo § 64.850 — County commission may prescribe zoning regulations ↗Re-checked Oct 1, 2026
2 more reviewed findings on this topic
- General — Missouri counties adopting zoning regulations for unincorporated territory.
  “If a majority of the votes cast is in favor of county zoning, the county commission shall proceed with a program of county zoning”
  RSMo § 64.090 — Planning and zoning powers of county commission ↗Re-checked Sep 21, 2026
- Limited — Missouri county zoning of unincorporated land.
  “counties of the second, third or fourth class may, after approval by vote of the people [...] in the unincorporated portions of the county”
  RSMo § 64.090 — Planning and zoning powers of county commission ↗Re-checked Oct 1, 2026
county building authorityLimited
County authority to regulate residential construction and issue building permits in unincorporated areas of Missouri.
- The authority under sections 64.170 to 64.200 applies to counties of the first and second classification.
- A county that had not adopted a building code before August 28, 2001, must obtain voter approval before adopting one under those sections.
- Only voters in the area affected by the proposed code may vote; incorporated-territory citizens cannot vote on a code affecting a county.
- The county commission must hold at least three public hearings and provide the statutory newspaper publication and county posting notices before adoption.
- Regulations adopted under section 64.180 apply to unincorporated territory, except as otherwise provided.
- Adopted or amended codes after August 28, 2001, must use a current, calendar year 1999 or later edition of a nationally recognized building code, as amended.
- A county building ordinance may not conflict with liquefied petroleum gas installations governed by section 323.020.
public hearings before adoption: >= 3 hearings minimum (Section 64.180(3)) · newspaper notice: >= 15 days (Notice of hearing time and place must be published in at least two newspapers having general circulation within the county) · posted notice: >= 15 days (Notice must be posted in four conspicuous places in the county) · minimum nationally recognized building-code edition: >= calendar year 1999 edition year (Applies after August 28, 2001, under section 64.180)
“The regulations adopted shall be applicable to the unincorporated territory of the county, except as otherwise provided herein”
RSMo Section 64.170 — County commissions control construction; issue building permits ↗Re-checked Oct 1, 2026
2 more reviewed findings on this topic
- Limited — 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.
  “the county commission in all counties of the first and second classification [...] is for this purpose empowered [...] to adopt [...] regulations to control the construction”
  RSMo § 64.170 — County commissions control construction and issue building permits ↗Re-checked Sep 21, 2026
- Limited — Missouri counties' authority to require permits and regulate residential construction in unincorporated areas.
  “Before the adoption of such code of regulations, the county commission shall hold at least three public hearings thereon”
  RSMo § 64.170 — County commissions control construction; issue building permits ↗Re-checked Oct 1, 2026

Inside cities and towns in Lewis County

Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.

Local zoningPresent (with conditions)
Land within the City of Canton, Lewis County, Missouri.
- The city website states that its zoning references are informational and not the final legal authority for the location of a zone.
- The complete municipal ordinance text was not separately reviewed for RV, tiny-home, dwelling-size, lot-size, or setback provisions.
“Municipal Code Link Canton Zoning Map Link — The information provided in this website in regard to zoning districts in the City of Canton, Missouri, is included to provide helpful information on the subject of zoning.”
Government | Canton Missouri ↗Re-checked Oct 7, 2026

Still unanswered

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

Certificate of occupancy — Certificates of occupancy for residential structures in unincorporated Lewis County.
County-wide zoning — County zoning in unincorporated Lewis County
Minimum lot size — Minimum lot size in unincorporated Lewis County
Building height — Building-height limits in Lewis County.
Living in an RV — RV occupancy on private land in unincorporated Lewis County

4 more unanswered

Tiny homes
Manufactured homes
Accessory dwellings
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 Lewis County, Missouri

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

Lewis County scores 77/100 on the Bolthole Index, a strong county profile. Its strengths: manageable long-term carry cost and low administrative friction for a quiet rural property.

How much does land cost in Lewis County, Missouri?

Land in Lewis County runs about $4,861 per acre, based on the latest county data.

What is the water situation in Lewis County?

Lewis County gets about 39.5" of rain a year, with severe drought in roughly 6.1% of years.

How remote is Lewis County?

A representative private-land location has about 6,360 people within a 30-minute drive and 558,801 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.

Building permits, zoning and land rules in Lewis County, Missouri