Unincorporated Ottawa County, Kansas requires a zoning permit for most proposed structures and uses, while the latest confirmed county building-code record dates to 2016 and reports no county building code12. The Zoning and Subdivision Office is the first call before building, and Ottawa County's environmental code governs onsite wastewater34.
At a glance
- Building permit
- Zoning permit generally required; no county building code12
- Zoning
- Five county districts apply in unincorporated Ottawa County5
- Septic authority
- Ottawa County environmental code; confirm the current permit process with the Zoning and Subdivision Office46
- RV living
- A county rule for living in an RV was not confirmed; ask the Zoning and Subdivision Office7
- Manufactured homes
- Allowed conditionally by district; foundation and home type matter8
- Owner-builder
- No county owner-builder exemption was confirmed9
- Subdivision
- Land divisions are regulated, with limited exemptions10
- Driveway entrance
- Road & Bridge approval and a ditch-crossing application are required before construction11
Who to call
Zoning
Ottawa County Zoning and Subdivision Office
Zoning permits, zoning questions, land-use applications and subdivision review in unincorporated Ottawa County
307 N. Concord, Suite 106, Minneapolis, KS 67467
Septic permits
Ottawa County Zoning and Subdivision Office
Current first contact for Ottawa County environmental-health services after Saline County ended service
Roads & driveways
Ottawa County Road & Bridge Department
County-road driveway and field-entrance approvals, ditch-crossing applications, roads and bridges
307 N. Concord Suite 100 Minneapolis, KS 67467
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 Ottawa County, Kansas?
Unincorporated Ottawa County generally requires a zoning permit before a proposed structure or use begins, but that approval is not a building-code permit17. The county's published zoning explanation says the permit regulates land use, bulk dimensions and setbacks rather than construction methods or materials7. A reviewed state codes table reports that Ottawa County had no building code, although that table dates to 2016 and current adoption status should be rechecked with the county2. Ottawa County's current residential inspection and certificate-of-occupancy requirements could not be confirmed; ask the Zoning and Subdivision Office what approvals apply to the exact parcel and project7. No county owner-builder exemption was confirmed, so do not treat owner construction as a way around the zoning-permit process91.
Who handles Ottawa County building and zoning permits?
The Ottawa County Zoning and Subdivision Office is the practical permit counter: the county directs anyone wanting to build or subdivide land to that office3. Contact the office at 307 N. Concord, Suite 106, Minneapolis, KS 67467, or call (785) 392-30377. Before paying for plans, ask the office to identify the parcel's zoning district, required zoning approval, setbacks, floodplain status and any subdivision issue710. Ottawa County publishes variable subdivision filing fees set by County Commission resolution, while its agricultural compliance certificate carries no fee12. For a new entrance onto a county road, contact the Ottawa County Road & Bridge Department at 785-392-3016; the department requires entrance approval and a ditch-crossing application before construction11. A driveway onto the state highway system instead requires an approved Kansas highway permit agreement before right-of-way work begins13.
Does Ottawa County have zoning?
Yes. County zoning applies to unincorporated Ottawa County, while incorporated municipalities may have their own rules14. Ottawa County publishes five districts: agricultural, village, suburban residential, commercial and industrial, each with its own uses and dimensions5. A nonfarm home in the agricultural district generally needs at least 20 acres, subject to listed exceptions, while the suburban residential district requires at least three acres and compliance with the County Sanitary Code15. Kansas law allows agricultural-use exemptions, but dwellings and similar accessory buildings are not agricultural buildings, public-road setbacks may still apply, and floodplain rules remain applicable16. In Ottawa County, an exempt agricultural structure outside a designated floodplain needs no zoning permit or fee, although the county may request an agricultural compliance certificate17.
How do septic permits work in Ottawa County?
Ottawa County has its own Environmental Code, adopted in March 2001, but the accessible county material does not spell out the current septic-permit or inspection procedure4. Saline County Environmental Health states that it stopped servicing Ottawa County on January 1, 2025 and directs Ottawa County residents to call 785-392-3037, the number used by Ottawa County's Zoning and Subdivision Office67. Call that office before ordering a system design and ask who reviews the site, issues the permit and performs inspections6. Kansas minimum standards still require domestic wastewater to use a properly designed septic system, lagoon, approved alternative system or permitted treatment plant; seepage pits, cesspools, dry wells and surface discharge are not allowed18. Only 21% of Ottawa County soils lack severe limits for a conventional drain field, so a site evaluation should come before the house layout19.
Can you live in an RV or tiny home in Ottawa County?
Ottawa County's published material does not confirm a general rule for living in an RV, temporary camping or tiny-home occupancy, so ask the Zoning and Subdivision Office about the parcel and proposed duration before moving onto the land7. The absence of a confirmed RV rule is not permission. Ottawa County regulates land use, dimensions and setbacks through its zoning permit even though that permit does not regulate construction methods or materials147. Manufactured housing has a clearer path: the agricultural district allows specified manufactured homes on enclosed permanent-type foundations, while the village district may permit modular, manufactured and mobile homes on homeowner-owned land8. Those manufactured-home provisions do not establish that an RV or tiny house qualifies, and no minimum dwelling floor area was confirmed; request a written zoning determination for the proposed unit7.
Building a home in Ottawa County: the steps in order
- Call the Zoning and Subdivision Office to confirm the parcel's district, allowed home type, lot size, setbacks, floodplain status and zoning-permit path3157.
- Verify that any recent land split complies with Ottawa County subdivision rules; a limited exemption depends on access, flood risk, use, sanitary-code compliance and zoning compliance10.
- Resolve wastewater early by asking the Zoning and Subdivision Office who currently handles the site review, septic permit and inspection6.
- Arrange a soil and site evaluation because only 21% of county soils lack severe limits for a conventional drain field19.
- Obtain Road & Bridge approval and complete the ditch-crossing application before constructing an entrance on a county road11.
What should you check before buying land in Ottawa County?
Start with legal access, the zoning district and the tract's division history: Ottawa County regulates subdivisions, and even an exempt land division must satisfy stated access, flood, use, sanitary-code and zoning conditions10. For a subdivision, required facilities must be installed or arranged before final-plat acceptance; public water and sewer must meet state standards, while onsite water and sewage must meet the County Sanitary Code20. Test septic feasibility before choosing a house site because only 21% of county soils lack severe limits for a conventional drain field19. Ottawa County's well-permit requirement could not be confirmed, while Kansas requires well logs and warns that county, city or state authorizations may apply21. Typical property tax is about 1.6%, with a median annual bill near $2,651 and a typical home value around $182,798222324.
Watch-outs
- Saline County Environmental Health stopped serving Ottawa County on January 1, 2025; call the Ottawa County number it provides before relying on an old septic contact6.
- Ottawa County's residential building-inspection, certificate-of-occupancy, RV-occupancy, tiny-home and floodplain-permit details could not be confirmed; ask the Zoning and Subdivision Office for parcel-specific answers7.
- A county-road entrance requires Road & Bridge approval, while an entrance onto the state highway system follows the separate Kansas highway permit process1113.
Sources
- Ottawa County, Kansas - Planning & Zoning (2026 county census)
- 2016 Updated Codes Spreadsheet, quoted and re-checked
- Ottawa County Planning & Zoning, quoted and re-checked
- County Environmental / Sanitary Codes, quoted and re-checked
- Ottawa County, Kansas - Zoning, quoted and re-checked
- Ottawa County Zoning and Subdivision Office (salinecountyks.gov)
- Ottawa County Zoning and Subdivision Office (ks1497.cichosting.com)
- Ottawa County, Kansas - Zoning, quoted and re-checked
- (2026 county census)
- Ottawa County, Kansas - Subdivision, quoted and re-checked
- Ottawa County Road & Bridge Department (ks1497.cichosting.com)
- Ottawa County, Kansas - Subdivision, quoted and re-checked
- Kansas Administrative Regulations, Volume 3 (Kansas statewide rule), quoted and re-checked
- Ottawa County, Kansas - Zoning, quoted and re-checked
- Ottawa County, Kansas - Zoning, quoted and re-checked
- K.S.A. 12-758 — Agricultural land exempted from zoning regulations (Kansas statewide rule), quoted and re-checked
- Ottawa County, Kansas - Zoning, quoted and re-checked
- MF2214 Minimum Standards for Design and Construction of Onsite Wastewater Systems (Kansas statewide rule), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Ottawa County, Kansas - Subdivision, quoted and re-checked
- Water Well County Permits (Kansas statewide rule), quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Typical home value (Zillow): 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.