Unincorporated Greene County, Tennessee requires a building permit before excavation, construction, moving or alteration of a building, including an accessory building1. County zoning also controls land use, lot size and setbacks outside municipalities234. Apply online to TDEC for septic approval; the county office no longer accepts septic applications or payment56.
At a glance
- Building permit
- Required before covered work in unincorporated Greene County1
- Zoning
- Yes, for unincorporated territory; rules vary by district27
- Septic permits
- Required; submit the application and payment online to TDEC68
- Owner-builder
- Allowed for an owner's own home under Tennessee's conditions9
- RV or tiny-home living
- No countywide answer confirmed; ask about the parcel's zoning district2
- Minimum lot size
- Varies by district and use; septic requirements may require more land3
- Agricultural buildings
- A county permit exemption exists for qualifying agricultural structures1011
Who to call
Building permits
Greene County Building & Zoning Office
Building permits, zoning questions and construction inspections in unincorporated Greene County
401 Takoma Ave, Suite 102 Greeneville, TN 37743
Septic permits
TDEC Division of Groundwater Protection — Greene County Septic System Construction
Septic applications, permits, site evaluations and inspections for Greene County
2305 Silver Dale Drive, Johnson City, TN 37601
Planning & zoning
Greene County Planning Department
Subdivision plat review, development questions and planning support
Contact details are copied from each office’s official page and were checked against it on September 28, 2026.
Do you need a building permit in Greene County, Tennessee?
Yes. In unincorporated Greene County, a building permit must be issued before excavation, construction, moving or alteration of a building, including an accessory building1. Plans, the intended use, zoning, subdivision rules and applicable flood-zone requirements must conform before approval1. Greene County enforces the adopted International Building Code and International Residential Code with Appendix J12. Permitted projects move through zoning, footer, slab, rough-in, energy and final inspections, although the structure type can trigger other inspections13. The county issues a certificate of occupancy after the final inspection and before anyone occupies the structure14. A qualifying structure on agricultural land may be exempt from the county building permit, but the exemption has conditions and does not erase septic, subdivision, floodplain or state requirements1011.
Who handles Greene County building permits and inspections?
The Greene County Building & Zoning Office is the first stop for a project in unincorporated Greene County, and it takes permit and inspection questions during its published weekday hours15. A permit application calls for owner and applicant information, a telephone number, the property address, a building description, a site plan or sketch, staking, payment and an approved subdivision plat when applicable16. Contractors must provide their current state contractor license, workers' compensation papers and county business license16. The county issues permits at the site after the initial inspection and application approval16. For a land division, contact the Greene County Planning Department, which reviews subdivision plats and answers development questions17. A division covered by the county subdivision rules needs an approved plat before it can be filed or recorded18.
Does Greene County, Tennessee have zoning?
Yes. Greene County zoning applies in unincorporated territory, while incorporated municipalities may administer separate rules2. The county map uses agricultural, residential, business and industrial districts, so the parcel's district is the starting point for any land-use answer7. Minimum lot area varies by district and use, and a lot without sanitary sewer must also satisfy TDEC requirements3. Setbacks likewise change with the zoning district, road classification, structure type and lot conditions4. Building-height limits also depend on the applicable district and use19. Ask the Building & Zoning Office to identify the parcel's zoning district and applicable setbacks before positioning a house, driveway or accessory building15. If a proposed building falls under the county flood-zone resolution, the application must also meet the floodplain permitting requirements20.
How do septic permits work in Greene County?
A septic permit is required to construct, modify or repair a septic system in Greene County8. Submit the application and payment through TDEC's online septic portal because the county Environmental Health office says it can no longer accept them621. TDEC evaluates the site and may request a site plan or soils map8. After installation, the installer must arrange a final inspection before the system is covered; an approved system receives a Certificate of Completion22. Only about 18% of Greene County soils rate as free of severe limitations for a conventional drain field, so septic suitability can determine whether a parcel works for the planned home23. The statewide permit rule covers new systems and repairs, with the design and fee depending on system type and flow24.
Can you live in an RV or tiny home in Greene County?
We could not confirm one rule allowing long-term RV living on every private parcel in unincorporated Greene County. Ask the Building & Zoning Office about the parcel's mapped district, the proposed occupancy and utility connections before buying or moving an RV onto the land152. We also could not confirm a tiny-home-specific occupancy rule or a countywide minimum dwelling floor area. A tiny home used as a residence still faces the county's building-permit process, district land-use rules, setbacks and septic approval148. Manufactured and mobile homes have separate provisions, and placing multiple mobile homes for living or sleeping can trigger the county's permitted mobile-home-park rules25. Do not treat the agricultural-building exemption as permission for a residence; the state exemption is limited to a structure incidental to the agricultural enterprise11.
Building a home in Greene County: the steps, in order
- Ask the Greene County Building & Zoning Office to confirm the parcel's district, allowed use, setbacks, lot-size requirement and flood-zone status24320.
- Submit the septic application through TDEC and complete the site evaluation before fixing the house location68.
- Prepare the county permit materials, including the site plan or sketch, property address and any required subdivision plat16.
- Stake the property lines and proposed structure for the initial zoning inspection13.
- Complete the county's required construction inspections and arrange the septic final inspection before covering the system1322.
- Obtain the county certificate of occupancy after the building final and before moving in14.
- If the driveway enters a state highway right-of-way, obtain the required TDOT entrance permit26.
What should you check before buying land in Greene County?
Start with buildability, not the listing description. About 60% of Greene County land has a slope of 15% or less, while about 51% is wooded, so clearing, grading and driveway layout can change the usable homesite2728. Conventional septic suitability is a major filter because only about 18% of soils rate free of severe drain-field limitations23. Confirm zoning, setbacks, minimum lot area, floodplain status and whether an existing division was legally approved before closing342018. Greene County's effective property-tax rate is about 0.4%, and the median annual property-tax bill is about $8032930. For access on a state highway, include TDOT entrance approval in the due-diligence timeline26. We could not confirm a Greene County-specific private-well permit rule, so ask the Building & Zoning Office and TDEC what applies to the parcel1521.
Watch-outs
- The county Environmental Health page says it no longer accepts septic applications or payments, so use TDEC's online portal instead621.
- A septic installation must pass its final inspection before the system is covered22.
- A qualifying farm structure can be permit-exempt, but floodplain, septic, subdivision and state requirements may still apply1011.
Sources
- Greene County Zoning Resolution, quoted and re-checked
- Greene County Zoning Resolution, quoted and re-checked
- Greene County Zoning Resolution, quoted and re-checked
- Greene County Zoning Resolution, quoted and re-checked
- TDEC - Subsurface Sewage Disposal Systems (SSDS) (2026 county census)
- Environmental Health, quoted and re-checked
- Greene County Zoning Resolution, quoted and re-checked
- SSDS Frequently Asked Questions, quoted and re-checked
- Can I build my own home without a license? (Tennessee statewide rule), quoted and re-checked
- Greene County Zoning Resolution, quoted and re-checked
- Exemption from County Zoning Regulation for Buildings on Land Used for Agriculture, Opinion No. 22-07 (Tennessee statewide rule), quoted and re-checked
- Building Safety / Codes, quoted and re-checked
- Building Safety / Codes, quoted and re-checked
- Building Safety / Codes, quoted and re-checked
- Greene County Building & Zoning Office (greenecountytngov.com)
- Board of Zoning / Building Commissioner, quoted and re-checked
- Greene County Planning Department (greenecountytngov.com)
- Greene County Subdivision Regulations, quoted and re-checked
- Greene County Zoning Resolution, quoted and re-checked
- Greene County Zoning Resolution, quoted and re-checked
- TDEC Division of Groundwater Protection — Greene County Septic System Construction (greenecountytngov.com)
- SSDS Frequently Asked Questions, quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Septic System Construction Permit (Tennessee statewide rule), quoted and re-checked
- Greene County Zoning Resolution, quoted and re-checked
- Highway Entrance Permits (Tennessee statewide rule), quoted and re-checked
- Share of land at 15% slope or less: Bolthole Index county data
- Wooded share of land: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written September 28, 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.