Unincorporated Chase County, Kansas does not require a county building permit and has no county zoning outside city limits12. Floodplain development still requires a county floodplain permit, and domestic septic systems require a septic permit through the Chase County Sanitarian345. Inside Cottonwood Falls, the city administers building codes and zoning, while the County Sanitarian remains the septic authority675.
At a glance
- Building permit
- Not required outside city limits; there is no ordinary county application or fee, but floodplain development has a separate permit process8910113
- Zoning
- No county zoning districts or zoning-based setbacks outside city limits12131415
- Septic permits
- Chase County Sanitarian; the county wastewater application lists a $50 fee16
- Floodplain permit
- Required for floodplain development; contact Kansas water officials before applying to the County Floodplain Manager17
- RV / tiny home living
- No county zoning restriction outside city limits; septic, floodplain, health and other non-zoning rules still apply1819
- Owner-builder
- You may build your own home because no county building permit is required; an owner doing roofing personally also has a narrow roofing-registration exemption2021
- Minimum home size
- No county zoning minimum dwelling size outside city limits; city, septic and floodplain rules may still apply22
- Septic soil difficulty
- Only 0.6% of county soils are free of severe limits for a conventional drain field23
Who to call
Septic permits
Chase County Wastewater Application for new or existing septic systems (lagoon, septic tank/lateral, or holding tank); $50 fee paid to Chase County
300 Pearl St., Cottonwood Falls, KS 66845
Floodplain permits
Chase County Emergency Preparedness & Sanitation (Floodplain Manager)
Floodplain Development Permit applications for development in Chase County's mapped floodplains, after a Kansas Department of Water Resources determination
301 Walnut St., Cottonwood Falls, KS 66845
Roads & driveways
County road maintenance, bridges and culverts; the office to ask about driveway access onto a county road, though no official page states a driveway-permit requirement
Contact details are copied from each office’s official page and were checked against it on October 3, 2026.
Off-grid gear
Going off-grid in Chase 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.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Chase County, Kansas?
No county building permit is required for an ordinary home in unincorporated Chase County, so there is no ordinary county building-permit application or published fee11011. An owner may build their own home because there is no county building permit from which to seek an exemption20. An owner who personally performs roofing, or uses employees without a registered roofing contractor, also has a narrow exemption from Kansas roofing-contractor registration; that exemption does not erase any floodplain or other permit requirement21. Floodplain development follows a separate county floodplain-permit process through state water officials and the County Floodplain Manager24. Inside Cottonwood Falls, contact the city for its construction approval and zoning approval because it has adopted building codes and runs municipal planning and zoning; septic permits still go through the Chase County Sanitarian675.
Who issues building, septic and floodplain permits in Chase County?
Chase County has no general building-permit office or county building-permit process for construction outside city limits because no county building permit is required there110. Cottonwood Falls administers construction approval and zoning approval inside its city limits; the Chase County Sanitarian still handles domestic septic permits there and elsewhere in the county754. Emergency Preparedness & Sanitation handles county floodplain permits: contact the Kansas Department of Water Resources first, then submit the completed application to the County Floodplain Manager25. Road & Bridge maintains county roads, bridges and culverts; ask that office before creating county-road access because we could not confirm that Chase County uses the county-unit road system required for the state culvert-and-entrance rule to apply2627.
Does Chase County have zoning?
Unincorporated Chase County has no county zoning requirements, zoning districts, or zoning-based setbacks outside city limits282930. There is also no county zoning minimum for dwelling or lot size and no county zoning limit on lot coverage or building height, although septic, floodplain and other rules still apply31323334. Kansas exempts agricultural land and agricultural buildings from zoning adopted under the state planning law while they remain in agricultural use, but the exemption does not displace floodplain rules35. Local zoning varies across Chase County: Cottonwood Falls has municipal planning and zoning, so do not carry the unincorporated-county answer across a city boundary367.
How do septic permits work in Chase County?
Domestic septic tanks and lateral fields in Chase County require a county septic permit through the Chase County Sanitarian45. The county wastewater application covers new and existing lagoons, septic tanks with laterals, and holding tanks; it lists a $50 fee and requires a licensed contractor for new construction16. The County Sanitarian remains the septic authority even where a city handles building permits or zoning5. Kansas minimum standards still constrain off-grid wastewater: private systems may be used when public sewer is unavailable and local requirements are met, but no private onsite system may discharge at the surface37. Only 0.6% of Chase County soils are rated without severe limitations for a conventional drain field, so arrange the site evaluation and system design early rather than assuming a standard lateral field will work23.
Can you live in an RV or tiny home on your land in Chase County?
Unincorporated Chase County has no county zoning restriction on RV occupancy or tiny-home occupancy outside city limits1819. That answer is limited to county zoning: septic, floodplain, health, utility and other non-zoning requirements can still control whether a site is usable1819. Temporary camping and manufactured-home occupancy remain unconfirmed, so ask the County Clerk before moving onto the parcel. Contact the County Sanitarian for the required domestic septic permit, including when the property lies inside a city45. A county floodplain permit may still be required for placing or building a structure in a floodplain3. Inside Cottonwood Falls, city zoning and adopted building codes replace the unincorporated zoning answer, while septic stays with the County Sanitarian765.
Building a home in Chase County: the steps, in order
- Confirm that the parcel is outside city limits; the no-permit and no-zoning rules are for unincorporated Chase County913.
- Check floodplain status; contact the Kansas Department of Water Resources before submitting a completed application to the County Floodplain Manager24.
- Arrange a soil evaluation because only 0.6% of county soils avoid severe limits for a conventional drain field23.
- File the wastewater application with the County Sanitarian; the form lists a $50 fee and requires a licensed contractor for new construction16.
- Obtain a state permit for a state-highway driveway, and ask Road & Bridge about access to a county road3826.
- Ask the County Clerk about unresolved well, RV and tiny-home rules; unincorporated Chase County has no zoning-based setbacks15.
What to check before you buy land in Chase County
Start with wastewater, water, flood risk and legal access. Only 0.6% of Chase County soils are rated without severe limits for a conventional drain field, while annual precipitation averages 36.3 inches and severe drought occurs in 17% of years233940. We could not confirm Chase County's well-permit rule, so ask the County Clerk before drilling41. Check flood maps because floodplain development requires county review even where ordinary building permits do not42. Confirm a state-highway driveway with the state, or county-road access with Road & Bridge3826. The effective property-tax rate is about 1.6%, with a median annual bill near $1,6944344.
Watch-outs
- Do not apply the unincorporated-county answer inside a city: Cottonwood Falls has municipal zoning and adopted building codes4546.
- The lack of county zoning removes county zoning restrictions on RV and tiny-home occupancy outside city limits, but it does not remove septic, floodplain, health or utility requirements1819.
Sources
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- chasecountyks.com, quoted and re-checked
- On-Site Wastewater Treatment and Disposal, quoted and re-checked
- chasecountyks.com, quoted and re-checked
- City Ordinances - City of Cottonwood Falls Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas (2026 county census)
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas (2026 county census)
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- Chase County Sanitarian (chasecountyks.com)
- chasecountyks.com, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- Kansas law on county zoning and building authority
- 2026 Kansas Statutes, 50-6,129. Exemptions, quoted and re-checked
- Commissioners :: Chase County Kansas, 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
- chasecountyks.com, quoted and re-checked
- Chase County Emergency Preparedness & Sanitation (Floodplain Manager) (chasecountyks.com)
- Chase County Road & Bridge (chasecountyks.com)
- 2021 Kansas Statute 68-543, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- chasecountyks.com, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- K.S.A. 19-2908: Zoning regulations inapplicable to existing structures or agricultural land; exceptions, quoted and re-checked
- Commissioners :: Chase County Kansas, quoted and re-checked
- MF2214 Minimum Standards for Design and Construction of Onsite Wastewater Systems, quoted and re-checked
- Kansas Administrative Regulations, Volume 3 (Kansas statewide rule), quoted and re-checked
- Annual precipitation: Bolthole Index county data
- Share of years in severe drought: Bolthole Index county data
- Water Well County Permits (Kansas statewide rule), quoted and re-checked
- Emergency Preparedness & Sanitation :: Chase County Kansas, quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Article 3. Zoning Regulations - Code of the City of Cottonwood Falls, Kansas, quoted and re-checked
- City Ordinances - City of Cottonwood Falls Kansas, quoted and re-checked
Written October 3, 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.