Unincorporated Shawnee County, Kansas requires a building permit for covered construction, placement, alteration, movement, occupancy, conversion, removal or demolition, and work cannot begin until Land Use & Development issues the permit1. County zoning also applies in unincorporated areas, while incorporated cities may administer their own land-use rules2. Environmental Health handles septic permits in the county-administered area, with stated municipal exclusions34.
At a glance
- Building permit
- Required for covered work before construction starts; Land Use & Development issues it1
- Zoning
- County zoning applies in unincorporated areas; cities may have their own rules2
- Septic permit
- Required for new installations and repairs in the county-administered area34
- Owner-builder exemption
- Not confirmed on county sources; ask Land Use & Development5
- Small accessory building exemption
- One-story detached tool/storage sheds up to 150 sq ft don't need a building permit6
- Agricultural building exemption
- Exempt from zoning if used for agricultural purposes; a $50 affidavit is filed7
- Driveway/culvert permit
- All new driveway entrances and culverts need Public Works approval8
Who to call
Building permits
Shawnee County Land Use & Development Department
Building, demolition, fence and sign permits, zoning regulations and complaints, floodplain management, and (since a January 2026 merger) septic/environmental health for unincorporated Shawnee County
1515 NW Saline St, Topeka, KS 66618
Also useful
Shawnee County Land Use & Development – Department Notice
The department's own announcement of its January 2026 formation, merging the former Planning Department and Environmental Health Division
1515 NW Saline St, Topeka, KS 66618
Septic permits
Shawnee County Land Use & Development – Environmental Health
Septic tank and well-water permits, inspections and water-quality testing, plus nuisance, solid waste and school-health inspections for unincorporated Shawnee County
1515 NW Saline St, Topeka, KS 66618
Roads & driveways
Shawnee County Public Works Department
Road maintenance, bridges, stormwater, and approval of new driveway entrances and culverts onto county roads
1515 NW Saline St, Topeka, KS 66618
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 Shawnee County, Kansas?
Yes. Unincorporated Shawnee County requires a permit for covered construction, placement, alteration, movement, occupancy, conversion, removal or demolition, and work cannot start until Land Use & Development issues it1. Listed exceptions include one-story detached tool or storage sheds with a projected roof area of 150 square feet or less and retaining walls no taller than 4 feet, but zoning setbacks still apply to an exempt shed1. If required work begins before the permit is obtained, the county charges double the normal fee1. Agricultural land and buildings used only for agricultural purposes can qualify for an exemption after filing the county affidavit and paying its $50 fee; dwellings, garages and similar accessory buildings do not qualify as agricultural buildings7.
Who is the Shawnee County building department, and how do you reach them?
Shawnee County Land Use & Development accepts building-permit applications for unincorporated property at 1515 NW Saline St in Topeka and can be reached at 785-251-54106. The owner or an authorized representative must submit the complete application and every required item together9. The package includes the application, code-compliance affidavit, legal description, proposed use or occupancy, tax status, site plan, project valuation and filing fee; commercial projects also require a drainage report and, when applicable, a code footprint9. A permit expires if work does not start within 12 months or is suspended or abandoned for 60 days or more, subject to the county's exceptions and extension rules9. Public Works separately approves and permits new driveway entrances, culverts and modifications8.
Does Shawnee County have zoning?
Yes. Shawnee County zoning regulations apply in unincorporated Shawnee County; incorporated municipalities may administer their own land-use rules2. The county publishes district regulations for RA-1, RR-1, R-1, M-1, M-1a, M-2, O&I, C, I and OS-1, along with dimensional requirements10. Minimum lot size and setbacks depend on the parcel's applicable zoning classification rather than one statewide measurement1112. Agricultural land and buildings used only for agriculture can be exempt after the required affidavit and $50 fee, but the exemption does not cover dwellings, garages or similar accessory buildings7. Ask Land Use & Development for the parcel's district and applicable dimensional rules before choosing a house location or relying on an agricultural use6.
How do septic permits work in Shawnee County?
Shawnee County requires a permit for every new septic installation and every repair in the county-administered area, and Land Use & Development's Environmental Health staff handles the permit34. The system is sized from the percolation test and total bedroom count, so test the site before locking in a house plan4. The county's stated authority over water and wastewater concerns in unincorporated areas excludes Topeka, Auburn, Rossville, Silver Lake and Willard; ask the applicable city about a parcel in one of those municipalities3. Only about 2.8% of county soils are rated without severe limitations for a conventional drain field, which makes early site evaluation especially important13. Kansas standards require household wastewater to go to an approved septic field, wastewater pond, alternative system or permitted treatment plant, and prohibit seepage pits, cesspools, dry wells and surface discharge14.
Can you live in an RV or tiny home on your land in Shawnee County?
We could not confirm a Shawnee County rule that permits or prohibits long-term RV living, temporary camping or tiny-home occupancy on private land. Unincorporated parcels are zoned, and the county publishes multiple districts with their own rules, so a parcel's classification matters210. Setbacks are also district-specific rather than governed by one statewide distance12. Before buying for an RV or tiny home, give Land Use & Development the parcel address and ask whether the proposed unit is allowed as a dwelling, whether temporary occupancy during construction is permitted, and what permits and dimensional standards apply6. The county materials reviewed also did not confirm a minimum dwelling size, so do not treat a small footprint as automatically allowed.
Building a home in Shawnee County: the steps, in order
- Ask Land Use & Development to identify the parcel's zoning district and the district rules for the proposed house210.
- If public sewer is unavailable, arrange the percolation test and obtain the septic permit before finalizing bedroom count and site layout415.
- Check the floodplain early; alterations exceeding 50% of a structure's value in the 100-year floodplain require a building permit and compliance with county floodplain regulations16.
- Obtain Public Works approval for any new driveway entrance, culvert or modification8.
- Submit the application, code-compliance affidavit, legal description, use or occupancy, tax status, site plan, valuation and filing fee together9.
- Wait for Land Use & Development to issue the permit before starting covered work1. Ask the department what inspections and occupancy approval your project will require, because a general schedule was not confirmed.
What to check before you buy land in Shawnee County
Confirm the zoning district and dimensional rules with Land Use & Development before buying unincorporated land210. Test the proposed septic area early because only about 2.8% of Shawnee County soils are rated without severe limitations for a conventional drain field13. Check whether the parcel lies in the 100-year floodplain, where alterations exceeding 50% of a structure's value trigger a permit and floodplain compliance16. Verify legal road access and budget separately for Public Works approval if a driveway entrance or culvert is new or changing8. If the plan depends on an agricultural exemption, remember that Shawnee County requires an affidavit and $50 fee and excludes dwellings, garages and similar accessory buildings7. We could not confirm a county well-construction permit rule or a universal public-utility connection rule; ask Environmental Health about water and wastewater requirements for the specific parcel17.
Watch-outs
- Shawnee County merged its Planning Department and Environmental Health Division into one Land Use & Development department on January 1, 2026; if you find older references to a separate 'Planning Department' or 'Environmental Health Division' office, use Land Use & Development and 785-251-5410 instead18.
- A new driveway entrance, culvert or modification needs separate Public Works approval and a permit, even when the building-permit package is otherwise complete8.
- Alterations exceeding 50% of a structure's value in the 100-year floodplain require a building permit and compliance with Shawnee County floodplain regulations16.
Sources
- Building Permits, quoted and re-checked
- Zoning Regulations, quoted and re-checked
- Environmental Health, quoted and re-checked
- Environmental Health, quoted and re-checked
- (2026 county census)
- Shawnee County Land Use & Development Department (snco.gov)
- Building Permits, quoted and re-checked
- Building Permits, quoted and re-checked
- Building Permits, quoted and re-checked
- Zoning Regulations, quoted and re-checked
- K.S.A. 12-753 — Zoning regulations; districts; restrictions (Kansas statewide rule), quoted and re-checked
- K.S.A. 12-753 — Zoning regulations; districts; restrictions (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
- MF2214 Minimum Standards for Design and Construction of Onsite Wastewater Systems (Kansas statewide rule), quoted and re-checked
- MF2214 Minimum Standards for Design and Construction of Onsite Wastewater Systems (Kansas statewide rule), quoted and re-checked
- Building Permits, quoted and re-checked
- Shawnee County Land Use & Development – Environmental Health (snco.gov)
- Shawnee County Land Use & Development – Department Notice (snco.gov)
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.