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

At a glance

Building permit

Required for covered residential construction in unincorporated areas¹

Building code

State residential program applies to covered homes and townhouses⁵

County zoning

No countywide zoning; cities regulate property inside city limits²

Septic

TDEC permit required before installation or repair⁶

Owner-builder

Allowed for an owner-use residence under state conditions⁷

RV or tiny-home living

Countywide occupancy rules could not be confirmed; ask the County Clerk and TDEC⁸⁴

Floodplain

County floodplain rules apply in FEMA-identified floodplains⁹

Who to call

Contact details are copied from each office’s official page and were checked against it on September 27, 2026.

Do you need a building permit in Giles County, Tennessee?

Yes. A state residential building permit is required for covered residential construction in unincorporated Giles County.¹ The program covers one- and two-family dwellings and townhouses and uses the state residential and energy codes.⁵ Detached garages, sheds, barns and other detached structures not used for living purposes do not require the state residential permit.¹⁰ A manufactured or modular home itself does not require that residential permit, but custom exit work such as a deck, patio or stoop does.¹⁰

The building permit does not replace septic, electrical, floodplain, grading, sewer or other approvals that may apply to the site.¹ State-permitted work receives foundation, framing or rough-in, and final inspections, with plumbing and mechanical inspection included under the stated conditions.¹¹

Who handles Giles County building permits and inspections?

The Giles County Clerk processes Tennessee building permits and is the local permit counter for questions about a residential project.³ A permit may also be purchased through Tennessee's CORE system, and inspections are requested through that system.¹⁰ State-contracted inspectors perform the required inspections for work under the state program.¹¹

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 controls.² The county's Regional Planning Commission is the contact for subdivision standards, development questions and floodplain information in unincorporated Giles County.¹² If the land must be subdivided, Giles County Subdivision Standards apply.¹²

Does Giles County, Tennessee have zoning?

Giles County has no countywide zoning, and unincorporated areas are not subject to county zoning regulations.² That does not make a parcel regulation-free: deed restrictions and applicable state and federal requirements can still control a project.¹² Incorporated-city property follows that city's codes and regulations.²

The absence of countywide zoning does not remove the state residential building-permit requirement, septic approval or the county's floodplain rules.¹⁶⁹ Giles County enforces floodplain-development regulations in FEMA-identified floodplains.⁹ The available county material does not establish a countywide minimum house size, a universal setback, or a general rule allowing residential occupancy of any movable or nontraditional structure; ask the Regional Planning Commission and County Clerk about the proposed parcel and structure.¹²³

How do septic permits work in Giles County?

TDEC requires a Septic System Construction Permit before a subsurface sewage system is installed or an existing faulty system is repaired.⁶ The TDEC Columbia Environmental Field Office serves Giles County and can route septic-service questions through its Division of Water Resources staff.¹³ A permitted installation receives a final inspection before the system is covered, and TDEC issues a Certificate of Completion after approval.¹⁴

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 work.¹⁵ TDEC may require soil information, and larger conventional or alternative systems require an engineer's design under the state process.⁶ 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 confirmed.¹⁶

Can you live in an RV or tiny home in Giles County?

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 parcel.² 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.³¹³

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 requirement.¹⁰ 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 permit.¹⁰ Property inside an incorporated city is governed by that city's codes and regulations, so the county answer cannot be carried into city limits.²

How do you build a home in Giles County?

1. Confirm whether the parcel is unincorporated or inside a city; city property follows city codes, while unincorporated property has no countywide zoning.²
2. Ask the Regional Planning Commission whether subdivision standards or FEMA-identified floodplain rules affect the tract.¹²⁹
3. Have TDEC evaluate the wastewater plan and obtain the septic construction permit before installation or repair.⁶
4. Purchase the state residential building permit through the Giles County Clerk or Tennessee's online system.³¹⁰
5. Arrange the required foundation, framing or rough-in, and final inspections before covering work.¹¹
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.¹⁷¹⁸
7. Confirm final septic approval and ask the County Clerk whether any separate occupancy documentation applies to the project.¹⁴³

What should you check before buying land in Giles County?

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 less.¹⁵¹⁹ Ask TDEC about septic feasibility for the exact homesite before the inspection period ends.¹³

Check the FEMA flood map and ask the Regional Planning Commission whether the proposed development lies in the county's regulated floodplain area.⁹ 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.¹⁷¹⁸ Review the deed for private restrictions because the absence of countywide zoning does not remove them.¹² Finally, verify water and sewer availability with the serving utility, since we could not confirm a countywide connection rule for unincorporated Giles County.¹⁶

Watch-outs

• No countywide zoning does not mean no permits: covered residential construction still needs the Tennessee state permit, and septic approval is separate.¹⁶
• A parcel inside Ardmore, Elkton, Minor Hill, Lynnville or Pulaski follows city codes and regulations, not the county's unincorporated-area zoning answer.²
• Only 15.4% of mapped soils lack severe limitations for a conventional septic drain field, so verify a workable wastewater site before closing.¹⁵
• Giles County's general residential certificate-of-occupancy requirement could not be confirmed; ask the County Clerk what final documentation applies to the specific project.³

Sources

1. Apply for a Residential Permit, quoted and re-checked
2. Giles County Regional Planning Commission, quoted and re-checked
3. Giles County Clerk (gilescountytn.gov)
4. TDEC - Subsurface Sewage Disposal Systems (SSDS) (2026 county census)
5. Residential Permits, quoted and re-checked
6. Septic System Construction Permit (Tennessee statewide rule), quoted and re-checked
7. Residential Permit FAQs, quoted and re-checked
8. Giles County Regional Planning Commission (2026 county census)
9. Giles County Regional Planning Commission, quoted and re-checked
10. Residential Permits (Tennessee statewide rule), quoted and re-checked
11. Residential Permits, quoted and re-checked
12. Giles County Regional Planning Commission (gilescountytn.gov)
13. TDEC Columbia Environmental Field Office (tn.gov)
14. SSDS FAQs, quoted and re-checked
15. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
16. Utility Customers Frequently Asked Questions (Tennessee statewide rule), quoted and re-checked
17. Highway Entrance Permits (Tennessee statewide rule), quoted and re-checked
18. Giles County Highway Department (gilescountytn.gov)
19. Share of land at 15% slope or less: Bolthole Index county data

Written September 27, 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.