Building permits, zoning and septic rules in Roane County, Tennessee

Roane County requires a building permit for new construction and locally enforces the 2024 International Residential Code and 2024 International Building Code^1,2. A Tennessee property owner may act as an unlicensed builder for one personal residence, limited to one owner-builder permit every two years; the home cannot be for sale, lease or rent, and anyone paid more than $25,000 is a prime contractor who must be licensed⁷. Agricultural land receives conditional protection from county zoning when a structure is incidental to the farm operation, subject to exceptions for locations near specified highways, airports and parks or within the hundred-year floodplain⁹. Roane County may still require a building permit before construction of an agricultural building, so confirm the permit path with Building Codes before starting work¹⁰.

The county's zoning resolution says an application for a building permit is made to the Zoning Office, so bring the parcel and plans to Planning and Zoning and Building Codes together if you are unsure which counter takes the application^1,2,3.

The Roane County Building Codes Department is at 308 N. 3rd Street, Kingston, TN 37763, phone 865-717-4230, email RCBC@roanecountytn.gov². Office hours run Monday through Friday, 8:00 a.m. to 4:00 p.m., and building permit applications and inspection requests must be submitted by 3:30 p.m.; a submission made between 3:00 and 3:30 p.m. may wait until the next business day². The county provides an online building-permit application portal, although the available material does not establish a complete general permit process or building-fee schedule⁸. The same office accepts Short-Term Rental Operating Permit applications online or in person; that annual permit must be issued before advertising or renting⁸.

Roane County administers zoning in unincorporated areas, while Kingston, Harriman and Rockwood govern zoning inside their city limits³. The county publishes district regulations, and lot size, lot coverage, setbacks and building height depend on the parcel's district or approved development plan^1,3. In the A-2 and R-1 districts, primary structures have 30-foot front and 10-foot side and rear setbacks; residential height is limited to 35 feet unless sprinkled¹. Ask Planning and Zoning at 200 E. Race Street, Kingston, TN 37763, phone 865-717-4232, to identify the parcel's district and confirm every applicable dimensional rule³. Agricultural zoning protection is conditional, and Roane County may still require a building permit for an agricultural building¹⁰.

Roane County septic construction permits are administered through Tennessee's Division of Water Resources, not a contract-county program^4,11. TDEC requires the construction permit before installing, modifying or repairing a system, and the installer must notify the Division when installation is complete so the system can be inspected before it is covered^5,6. Roane County is served by TDEC's Knoxville Environmental Field Office, 3711 Middlebrook Pike, Suite 101, Knoxville, TN 37921, phone (865) 594-6035¹². A new conventional-system permit runs $400 for up to 1,000 gallons per day of design flow, while repair permits carry no permit fee⁵. Only about 15.3% of Roane County soils are rated without severe limits for a conventional drain field, so make the site and soil evaluation an early feasibility check¹³.

Unincorporated Roane County prohibits using a camping trailer, camper, recreational vehicle or motor home as a permanent residence; noncommercial storage behind the front building line is allowed as an accessory use¹. We could not confirm a general rule for temporary camping on private land, so ask Planning and Zoning at 865-717-4232 about the intended duration and parcel before setting up³. Roane County treats manufactured homes by district: the A-2 district allows single-family residences including singlewide mobile homes, while the R-1 district excludes singlewide mobile homes; a manufactured home must meet foundation, permanent utility-connection, appearance and building-code conditions¹. We could not confirm a distinct tiny-home occupancy rule or minimum dwelling size, so take the proposed design to Planning and Zoning and Building Codes before buying^2,3.

1. Ask Roane County Planning and Zoning at 865-717-4232 to identify the parcel's district, allowed use, lot size, lot coverage, setbacks and height limits^1,3.
2. Ask whether subdivision review applies; Roane County regulates subdivision proposals, and lots in a proposed subdivision must connect to an adjoining public sanitary sewer under the stated conditions^3,14.
3. If public sewer is unavailable, apply through TDEC before septic construction or repair, then leave the completed system uncovered for the required inspection^5,6,12.
4. For a county-road entrance, contact the Highway Department; its specifications call for at least a 15-inch culvert tile and require the driveway to meet road elevation for 20 feet¹⁵.
5. Obtain a TDOT permit before work on a state highway right-of-way¹⁶.
6. Apply to Building Codes, using the county's online building-permit portal or the office at 308 N. 3rd Street^2,8.
7. If acting as owner-builder, stay within Tennessee's personal-use limits⁷.

Only about 15.3% of Roane County soils are rated without severe limits for a conventional septic drain field, so make septic feasibility an early contract contingency¹³. About 34.9% of county land has a slope of 15% or less, while 71.3% is wooded; grading, access and clearing can materially change the usable building area¹³. The effective property-tax rate is about 0.6%, and the median annual property-tax bill is about $1,172¹³. Before closing, confirm the zoning district, lot size, setbacks, height and lot-coverage controls, septic approval, legal access and public-versus-private road status¹. Floodplain development is locally managed and may require review before work begins; we could not confirm Roane County's operative parcel-level requirements, so ask Building Codes who handles the review^2,17. We also could not confirm a general private-well permit rule.