Unincorporated Pottawatomie County, Kansas requires building permits for site-built homes, accessory structures, manufactured and moved-in homes, and additions.1 The county Planning & Zoning Office issues building permits and applies zoning to unincorporated land, while Wamego, St. Marys and the other incorporated cities keep their own rules.23 Septic permits come from county Environmental Health.45
At a glance
- Building permit
- Required for homes, accessory structures, manufactured or moved-in homes, and additions6
- Zoning
- County zoning applies to unincorporated land, with stated extraterritorial-jurisdiction exceptions2
- Septic permit
- Required before new installation or reconstruction; county Environmental Health administers it47
- Tiny home
- Allowed as an accessory dwelling unit if permanently founded and all district conditions are met8
- RV living
- Limited to a permitted underlying use or a designated RV or manufactured-home park9
- Owner-builder
- No general exemption is published; confirm permit requirements with Planning & Zoning103
- Private well
- A county permit applies to non-public water supplies, subject to the stated scope11
- Rural lot size
- Generally 3 acres with rural water or 5 acres with an individual well, subject to sanitary and tract-specific rules12
Who to call
Building permits
Pottawatomie County Planning & Zoning Office
Building and sign permits, zoning, subdivision plat review, addressing, land-use planning, and floodplain management
207 N. 1st, Westmoreland, KS 66549
Septic permits
Pottawatomie County Environmental Health
Private wastewater and water-disposal systems and private water-supply systems
612 E. Campbell St., Westmoreland, KS 66549
Contact details are copied from each office’s official page and were checked against it on October 9, 2026.
Off-grid gear
Going off-grid in Pottawatomie County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
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Do you need a building permit in Pottawatomie County, Kansas?
Yes. Pottawatomie County requires a building permit for site-built dwellings and accessory structures, manufactured homes, moved-in homes, and additions6. Small storage sheds of 120 square feet or less, fences, playhouses, and play equipment are exempt6. Agricultural structures still need a permit for floodplain and setback review, although the permit carries no fee on 40 acres or more13. A county permit does not necessarily include full building-code review: except for commercial ADA requirements, the county has adopted building codes only within the Blue Township Sewer District, and buyers outside that district are responsible for checking construction quality and code compliance14.
Who issues building permits, zoning approval and septic permits in Pottawatomie County?
The Pottawatomie County Planning & Zoning Office issues building and sign permits and administers zoning, subdivision review, addressing, and floodplain management3. The office is at 207 N. 1st, Westmoreland, KS 66549, and its phone number is 785-457-35513. A residential dwelling permit costs $200, while residential additions and accessory structures cost $5015. Ask the office to identify the parcel's zoning district, jurisdiction, floodplain status, and application before preparing plans32. We could not confirm the complete inspection sequence or a general certificate-of-occupancy rule for ordinary construction; ask Planning & Zoning what inspections and closeout documents apply3.
Does Pottawatomie County have zoning?
Yes. The county Unified Development Regulations apply to unincorporated Pottawatomie County, except designated extraterritorial-jurisdiction areas for Wamego and St. Marys, while incorporated municipalities may administer their own rules2. Rural tracts generally need at least 3 acres with rural water or 5 acres with an individual well, with final size tied to water and sanitary-disposal needs and subject to stated exceptions12. Residential height limits depend on the development type: rural and urban residential tables use 2 stories, while planned-unit developments have a 37-foot limit16. In the residential tables, buildings sit 40 feet from a county road and 25 feet from an internal street, with a written reduction possible where floodplain or topography makes 40 feet impractical; side and rear yards are 14 feet in Article 5 districts and 8 feet in Article 6 districts, and individual plats can differ.17 We could not confirm a countywide minimum dwelling size or numeric setbacks for non-residential districts; ask Planning & Zoning to check the zoning map, plat, and recorded covenants3.
Who issues septic and well permits in Pottawatomie County, and how do they work?
Pottawatomie County Environmental Health administers private wastewater and water-disposal systems from 612 E. Campbell St., Westmoreland, KS 66549, at 785-457-33975. A site plan must be reviewed before a health permit is issued, and work cannot begin before issuance18. The fee is $150 for new construction and $25 for reconstruction; starting first can add a $100 late-inspection fee18. The Sanitarian must approve the installed septic system before a residence is occupied19. A private system within 400 feet of an existing public sewer is allowed only when connection is infeasible and the county certifies compliance20. Environmental Health also issues the annual non-public water supply permit, which costs $75 per year.11 Septic permits are a county Environmental Health matter, separate from the Planning & Zoning building permit and from any city's rules.7 Only about 1.2% of county soils are rated without severe limits for a conventional drain field, so make wastewater feasibility an early purchase contingency21.
Can you live in an RV or tiny home on your land in Pottawatomie County?
In unincorporated Pottawatomie County, a building, structure, or vehicle cannot be used as a temporary residence unless the underlying zoning district permits that use or the site is part of a designated RV or manufactured-home park9. Temporary camping that is not use as a residence remains unconfirmed; ask Planning & Zoning before placing an RV3. A tiny home can qualify as an accessory dwelling unit when permanently founded in a district allowing single-family housing and when the county's ownership, size, setback, sewer, parking, and plan conditions are met8. Manufactured homes follow separate placement rules, including options for operating farms of 40 acres or more, qualifying agricultural tracts, mobile-home parks, and residential-designed homes that meet the stated standards22.
Building a home in Pottawatomie County: the steps, in order
- Ask Planning & Zoning to identify the parcel's jurisdiction and zoning district23.
- Confirm tract size, setbacks, floodplain status, and plat or subdivision conditions122324.
- Resolve water and wastewater service with Environmental Health; areas outside county sewer districts generally use private wastewater systems255.
- Apply to the county for a new entrance before adding a driveway to a county road, or obtain a state permit for a state-highway connection2627.
- Submit the building-permit application to Planning & Zoning and the wastewater site plan and health-permit application to Environmental Health618.
- Arrange wastewater inspection before covering or operation, and obtain Sanitarian approval before occupying the residence2819.
- Ask Planning & Zoning which building inspections and closeout documents apply3.
What should you check before buying land in Pottawatomie County?
Start with jurisdiction: county zoning excludes designated extraterritorial areas for Wamego and St. Marys, while incorporated municipalities may apply their own rules2. Verify zoning, plat restrictions, floodplain status, access, and whether a proposed split needs rezoning and platting329. Test wastewater feasibility before closing because only about 1.2% of county soils are rated without severe limits for a conventional drain field21. Confirm whether the parcel has county sewer, rural-water service, or needs private systems25. A new county-road entrance requires an application, and a state-highway driveway requires a separate state permit2627. Pottawatomie County's effective property-tax rate is about 1.1%, with a median annual bill of about $2,4753031.
Watch-outs
- A county building permit does not mean the same code review everywhere: county building codes are adopted within the Blue Township Sewer District, while the county's stated code coverage is narrower outside it32.
- Agricultural structures still need a county permit for floodplain and setback review, even where the permit fee is waived on qualifying acreage33.
- Temporary camping that is not residential use, a general owner-builder exemption, ordinary building inspections, certificates of occupancy beyond septic approval, and a county minimum dwelling size remain unconfirmed; ask Planning & Zoning about the exact parcel and project103.
Sources
- pottcounty.org, quoted and re-checked
- Pottawatomie County Unified Development Regulations, Article 1, quoted and re-checked
- Pottawatomie County Planning & Zoning Office (pottcounty.org)
- Environmental Health Permit Application, quoted and re-checked
- Pottawatomie County Environmental Health (pottcounty.org)
- pottcounty.org, quoted and re-checked
- Environmental Health, quoted and re-checked
- pottcounty.org, quoted and re-checked
- pottcounty.org, quoted and re-checked
- Pottawatomie County - When is a building permit needed? (FAQ) (2026 county census)
- Environmental Health, quoted and re-checked
- pottcounty.org, quoted and re-checked
- pottcounty.org, quoted and re-checked
- Frequently Asked Questions - Does the county have building codes?, quoted and re-checked
- Fees, quoted and re-checked
- Unified Development Regulations, quoted and re-checked
- Pottawatomie County Unified Development Regulations, quoted and re-checked
- Health Permit Application — Request for Installation of Private Sewage System, quoted and re-checked
- Health Permit Application — Request for Installation of Private Sewage System, quoted and re-checked
- Sanitation Codes Pottawatomie County, KS, quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- pottcounty.org, quoted and re-checked
- Plats, quoted and re-checked
- pottcounty.org, quoted and re-checked
- pottcounty.org, quoted and re-checked
- Entrances, quoted and re-checked
- Kansas Administrative Regulations, Volume 3 (Kansas statewide rule), quoted and re-checked
- Environmental Health, quoted and re-checked
- Planning & Zoning Office, quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Pottawatomie County Planning and Zoning FAQs, quoted and re-checked
- pottcounty.org, quoted and re-checked
Written October 9, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.