Building permits, zoning and land rules in Franklin County, Kansas

Yes, for most buildings. Unincorporated Franklin County requires plan review and a building permit before construction starts on most proposed buildings, including homes¹. A building permit is not required for a detached one-story structure under 200 square feet that is not habitable space, and zoning setbacks still apply to those structures¹. Agricultural buildings need no building permit, but the owner files a signed, notarized affidavit of agricultural use with a deed and site plan¹. Franklin County administers the 2003 editions of the International Building, Residential, Plumbing and Mechanical codes and the 2002 National Electrical Code¹. An owner may generally build a residence the owner owns and will personally occupy, but electrical, plumbing and HVAC work needs licensed trades⁴. Building permit fees depend on the type of structure and, for a new residence, its square footage; the county posts a fee schedule¹.

Franklin County Planning & Building is the permit office for construction, zoning, subdivision review and floodplain administration in unincorporated Franklin County⁵. The office is at 1428 S. Main St. Suite 5 Ottawa, KS 66067, and its main number is 785.229.3570⁵. Franklin County requires all permit applications to go through its customer portal, where applicants can submit applications, track progress and access permit information^5,6. The same department administers the National Flood Insurance Program using FEMA flood maps, so ask it whether a proposed building site needs floodplain review before finalizing the site plan⁵. Cities in Franklin County have their own jurisdiction, because the county office’s stated building and zoning responsibilities concern unincorporated Franklin County⁵. Septic permits and well permits stay with Franklin County Environmental Health, listed below³.

Yes. Franklin County administers published zoning districts and regulations across unincorporated territory, excluding land inside the Urban Growth Areas set by agreements between the county and its cities^2,7. A residence generally needs at least 3 acres if district setbacks can be met and the onsite wastewater system fits; a tract needs at least 5 acres if the soil profile requires a wastewater lagoon⁴. The applicable setback depends on the parcel’s zoning district, so Planning & Building should identify the district before a buyer fixes a house or outbuilding location^4,5. A manufactured home may be installed where a site-built home is permitted or in the Mobile Home Park District, provided the unit meets the county’s stated federal manufactured-home standard⁴. Structures used exclusively for agriculture remain subject to their zoning-district setbacks even when exempt from the county building permit¹.

Franklin County Environmental Health is the administering agency for the county’s Environmental Sanitation Code and issues septic permits in unincorporated Franklin County³. A wastewater system permit is required before building, significantly altering, replacing or removing a system; it is valid for 12 months, can be renewed annually and does not transfer to a new owner³. The code requires at least 3 acres per living unit, and a system within 400 feet of an available public sewer main may face connection requirements³. A new system must be inspected and approved before it goes into service or before an occupancy permit issues, and a seller or lessor of a property on an onsite system must have it inspected by an approved inspector³. Kansas standards bar seepage pits, cesspools, dry wells and surface discharge⁸. None of the county’s mapped soils are rated free of severe limitations for a conventional drain field, and a required lagoon raises the residential minimum tract to 5 acres^4,9. Contact Environmental Health at 785.229.3590 or ptoth@franklincoks.org, at 1428 S. Main St. Suite 6 Ottawa, KS 66067¹⁰.

Franklin County allows a camping trailer, recreational vehicle, mobile home or manufactured home as a temporary residence during construction or rebuilding only when a permanent-residence building permit has issued and the property satisfies the county’s sanitation conditions¹. The temporary-use application requires approved sanitation, a $5,000 performance bond and an affidavit to remove the temporary unit within 30 days; a zoning violation can draw a fine of as much as $500 per day¹. We could not confirm a separate county rule allowing full-time RV occupancy without an active home build, so ask Planning & Building about the parcel and proposed duration. A mini-home built for permanent living is allowed in unincorporated Franklin County if it meets the adopted building codes, including frost-depth footings, minimum room sizes and ceiling heights, and has a cased well or rural water plus a permanent sanitation system¹. Waterless toilets and portable sanitary units are limited to temporary uses approved by Special Use Permit¹. An accessory dwelling must be at least 500 square feet and no more than 1,200 square feet, detached, and on a parcel of at least 5 acres unless both homes connect to public sewer; the owner must live in one of the two units². We could not confirm a minimum floor area for a main dwelling, so ask Planning & Building which standards apply to the proposed design.

1. Confirm that the parcel is outside city limits and ask Planning & Building for its zoning district, permitted use, district setbacks and floodplain status^4,5.
2. Verify that the tract meets the 3-acre residential minimum and whether the soil profile could require a lagoon and a 5-acre tract⁴.
3. Discuss the proposed water supply and septic site with Environmental Health before fixing the house location³.
4. Apply to Environmental Health for the septic permit and, separately, the water-well construction permit before drilling a private supply well^3,10.
5. Obtain Public Works permission before establishing or reconstructing the property entrance¹.
6. Submit all permit applications through Franklin County’s customer portal^5,6.
7. Complete the required inspections; Franklin County issues the certificate of occupancy after the final inspection passes⁴.

Start with zoning, access and wastewater. Franklin County zoning applies across unincorporated territory outside city Urban Growth Areas, and the district determines the parcel’s setbacks^2,4. Confirm that a proposed residence can satisfy the 3-acre minimum together with setbacks and an onsite wastewater system; land needing a lagoon must have at least 5 acres⁴. Public Works permission is required before establishing or reconstructing a county-road entrance, while a driveway onto the state highway system separately requires a Kansas permit^1,11. Franklin County Environmental Health requires a construction permit before a private supply well is drilled¹⁰. None of the county’s soils are rated as free of severe conventional-drain-field limitations, so make the site evaluation part of due diligence⁹. The effective property-tax rate is about 1.5%, and the median annual property-tax bill is about $2,737⁹. If the lot fronts a minimum-maintenance road, ask Planning & Building about the county resolution that restricts building permits there unless the owner agrees to upgrade the road¹.