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

Yes. A state residential building permit is required for covered residential construction in unincorporated Giles County². The program covers one- and two-family dwellings and townhouses and uses the state residential and energy codes⁵. Detached garages, sheds, barns and other detached structures not used for living purposes do not require the state residential permit⁵. A manufactured or modular home itself does not require that residential permit, but custom exit work such as a deck, patio or stoop does⁵.

The building permit does not replace septic, electrical, floodplain, grading, sewer or other approvals that may apply to the site². State-permitted work receives foundation, framing or rough-in, and final inspections, with plumbing and mechanical inspection included under the stated conditions⁵. Permit fees vary with the cost of construction, and the Giles County Clerk says the cost depends on expected construction cost and type of foundation; new construction also carries a $100 plumbing and HVAC inspection fee⁹. An owner may build a single residence for their own use without a contractor license once every 24 months, as long as it is not for resale, lease or rent⁷.

The Giles County Clerk processes Tennessee building permits and is the local permit counter for questions about a residential project³. A permit may also be purchased through Tennessee's CORE system, and inspections are requested through that system⁵. State-contracted inspectors perform the required inspections for work under the state program⁵.

Before applying, tell the Clerk whether the parcel is unincorporated or inside Ardmore, Elkton, Minor Hill, Lynnville or Pulaski, because property inside those cities follows city codes and regulations rather than county land controls¹. The county's Regional Planning Commission is the contact for subdivision standards, development questions and floodplain information in unincorporated Giles County¹. If the land must be subdivided, Giles County Subdivision Standards apply¹.

Giles County has no countywide zoning, and unincorporated areas are not subject to county zoning regulations¹. That does not make a parcel regulation-free: deed restrictions and applicable state and federal requirements can still control a project¹. Incorporated-city property follows that city's codes and regulations¹.

The absence of countywide zoning does not remove the state residential building-permit requirement, septic approval or the county's floodplain rules^1,2,6. Giles County enforces floodplain-development regulations in FEMA-identified floodplains¹. Because the county has no zoning, it sets no zoning minimum dwelling size, lot size, lot coverage or building height in unincorporated areas, though building-code, septic, floodplain, subdivision and deed-restriction rules still apply¹. Where a tract is subdivided under the Giles County Subdivision Standards, residential setback lines are 35 feet at the front and 10 feet at the side; the standards do not reach tracts of five acres or larger that need no new roads, easements or utilities¹⁰.

TDEC, not the county or a city, requires a Septic System Construction Permit before a subsurface sewage system is installed or an existing faulty system is repaired, and it is separate from the state residential building permit⁴. The fee for a new conventional system is $400 for a design flow up to 1000 gallons per day⁶. The TDEC Columbia Environmental Field Office serves Giles County and can route septic-service questions through its Division of Water Resources staff¹¹. A permitted installation receives a final inspection before the system is covered, and TDEC issues a Certificate of Completion after approval⁶.

Only 15.4% of mapped Giles County soils lack severe limitations for a conventional septic drain field, so make septic feasibility an early purchase contingency rather than assuming a house site will work¹². TDEC may require soil information, and larger conventional or alternative systems require an engineer's design under the state process⁶. A qualifying utility may instead require a building on an abutting parcel to connect to an available sanitary sewer, but no countywide Giles County connection rule was confirmed¹³.

Giles County's lack of countywide zoning does not by itself confirm that full-time RV living or every tiny-home setup is legal on an unincorporated parcel¹. We could not confirm a countywide RV-occupancy rule, tiny-home minimum size or off-grid sanitation rule, so ask the County Clerk about the structure and TDEC about the proposed wastewater method before buying^3,11.

A tiny home built as a dwelling can fall within the state residential permit program, while detached structures not used for living purposes are outside the state residential permit requirement⁵. Manufactured and modular homes generally do not require the state residential permit for the unit itself, although custom site work used to exit the home does require a permit⁵. Property inside an incorporated city is governed by that city's codes and regulations, so the county answer cannot be carried into city limits¹.

1. Confirm whether the parcel is unincorporated or inside a city; city property follows city codes, while unincorporated property has no countywide zoning¹.
2. Ask the Regional Planning Commission whether subdivision standards or FEMA-identified floodplain rules affect the tract¹.
3. Have TDEC evaluate the wastewater plan and obtain the septic construction permit before installation or repair⁶.
4. Purchase the state residential building permit through the Giles County Clerk or Tennessee's online system^3,5.
5. Arrange the required foundation, framing or rough-in, and final inspections before covering work⁵.
6. If a driveway connects to state highway right-of-way, obtain the required TDOT highway entrance permit; ask the Giles County Highway Department about access from a county road^14,15.
7. Confirm final septic approval and ask the County Clerk whether any separate occupancy documentation applies to the project^3,6.

Start with wastewater and terrain. Only 15.4% of mapped soils lack severe limitations for a conventional septic drain field, while 57.7% of county land has a slope of 15% or less¹². Ask TDEC about septic feasibility for the exact homesite before the inspection period ends¹¹.

Check the FEMA flood map and ask the Regional Planning Commission whether the proposed development lies in the county's regulated floodplain area¹. Confirm legal road access separately; a driveway on state highway right-of-way needs a TDOT permit, while county-road questions go to the Highway Department^14,15. Review the deed for private restrictions because the absence of countywide zoning does not remove them¹. Finally, verify water and sewer availability with the serving utility, since we could not confirm a countywide connection rule for unincorporated Giles County¹³.