Building permits, zoning and land rules in Fayette County, Tennessee

Yes. Fayette County requires a building permit for construction, enlargement, alteration, repair, movement, improvement, removal, conversion or demolition of any building or structure¹. For a home in unincorporated Fayette County, the county's published sequence requires an approved septic permit, an approved building-permit application and an approved plan review before the building permit can be issued⁵. Construction cannot begin until the permit is issued⁵. Building permits cannot be applied for online: applicants appear in person or by agent at the county planning office, there is no fee to apply for the county building permit, and a permit is issued only with septic approval and, if applicable, payment of the adequate facilities tax². For buildings that generate wastewater, the state wastewater-disposal permit must be granted before the county building permit is issued, and no clearing or grading should happen before that state permit². The permit instructions also separate electrical work from the county permit: electrical permits and electrical inspections go through the state⁵. Tennessee's statewide owner-builder allowance can let a property owner build a single residence for personal use, but it does not erase the Fayette County permit requirement; the owner may build one residence every two years, for personal use and not for resale, lease or rent, and any hired person whose portion is $25,000 or more must be a licensed contractor^1,6.

Fayette County Planning and Development is the building-permit and zoning contact¹. The office is at 16265 Hwy 64 in Somerville, and its main phone is 901-465-5250¹. Permit-related email can be sent to permits@fayettetn.us¹. The department's page links the building-permit application, zoning resolution, zoning map and subdivision regulations, and it describes zoning as the districts and regulations governing land use and development¹. Use the same office to confirm the zoning district and application package for a specific rural parcel before commissioning final plans¹. Fayette County's published home-permit instructions require the proposed dwelling location to be visibly marked and plans to show heated and unheated floor area plus plumbing fixtures⁵.

Yes. Fayette County's zoning resolution expressly applies to the unincorporated regions of the county, where it regulates the location, height and density of buildings, yard sizes and land and building uses, and the standard that applies to a project depends on the parcel's district³. The Official Zoning Map is kept in the Fayette County Register's Office in the courthouse³. A parcel inside a city's limits needs a separate check with that city, since we could not confirm municipal zoning rules³. Do not carry one setback from the zoning resolution across every property because some standards are district-specific³. In the cited district provision, the road-right-of-way setback is 50 feet, while certain district-boundary and lot-line setbacks are 25 feet or 50 feet when adjoining a residential district³. That same district caps coverage by all structures, including accessory buildings, at 75 percent, and caps building height at 25 feet unless the building meets additional setback requirements³. Tennessee provides a conditional county-zoning exemption for a structure on agricultural land when it is incidental to the agricultural enterprise, but highway, airport, park and floodplain exceptions can defeat it⁸.

Separately, land divisions fall under the county subdivision regulations, which require adequate streets, drainage, utilities and vehicular ingress and egress¹.

TDEC's Division of Water Resources, not Fayette County, administers septic permitting and inspection^1,4. A septic permit is required to construct, modify or repair a septic system, and Fayette County requires approved septic authorization before it will issue the building permit^4,5. After installation, the installer contacts the local Environmental Scientist for a final inspection before the system is covered; approval produces a Certificate of Completion⁴. TDEC's current Memphis Environmental Field Office page lists Fayette among the counties it serves and directs water-resources questions through its main line at (901) 371-3000⁹. Only about 5.1 percent of Fayette County soils rate free of severe limits for a conventional drain field, so make septic feasibility an early contingency rather than assuming a conventional layout will work¹⁰.

Fayette County has not published a confirmed countywide answer here for long-term RV occupancy or for tiny-home occupancy. Ask Planning and Development at 901-465-5250 about the parcel's zoning district, the proposed structure or vehicle, utility connections and how long you intend to occupy it¹. A tiny home is not automatically outside the permit system: Fayette County's building-permit rule covers construction, movement, improvement and conversion of buildings or structures¹. Zoning also remains relevant because Fayette County regulates land use and development by district¹. The county's minimum dwelling size and minimum lot area could not be confirmed, so obtain a parcel-specific answer from Planning and Development before buying land or ordering a unit¹.

1. Confirm the parcel's zoning district and applicable standards with Fayette County Planning and Development at 901-465-5250¹.
2. Apply to TDEC for the septic permit; Fayette County requires septic approval before the building permit^4,5.
3. Mark the property at the road and stake or flag the proposed dwelling location⁵.
4. Visit the county planning office in person (building permits cannot be applied for online) and submit the county building-permit application and house plans showing heated and unheated floor area and plumbing fixtures for plan review^2,5.
5. Obtain the issued building permit before starting construction⁵.
6. Pull electrical permits through Tennessee and use the state electrical inspector⁵.
7. Arrange the septic final inspection before the system is covered⁴.
8. If access connects to a state-highway right-of-way, get TDOT's entrance permit before constructing or changing the driveway⁷.

Start with zoning and septic. Fayette County has district-based land-use standards, while only about 5.1 percent of its soils rate free of severe limits for a conventional drain field^1,10. Confirm public sewer availability too: a qualifying Tennessee utility can require a building on an abutting parcel to connect to its sewer and stop using another sewage-disposal method¹¹. Check road access because a driveway on state-highway right-of-way needs TDOT approval before construction or a change in use⁷. Most of the county is comparatively gentle terrain, with about 91.5 percent of land at a slope of 15 percent or less, but that does not substitute for a parcel survey or soil evaluation¹⁰. Fayette County's effective property-tax rate is about 0.3 percent, and the median annual property-tax bill is about $1,092¹⁰.