Unincorporated Henderson County, Tennessee does not require a residential building permit1. Inside Lexington, the city requires building permits and enforces municipal zoning; new construction and buildings altered in use or structure need a certificate of occupancy before use234. TDEC handles septic permits and inspections across Henderson County, including city addresses; zoning outside city limits remains unconfirmed567.
At a glance
- Building permit
- Not required for a home in unincorporated areas; Lexington requires a building-permit request18
- Zoning
- Unincorporated status unconfirmed; Lexington enforces municipal zoning79
- Septic permit
- TDEC handles permits and final inspections for new systems, modifications and repairs10111213
- RV or tiny-home living
- Unconfirmed; ask the county government about occupancy, setbacks and minimum dwelling size714
- Owner-builder rule
- An owner may build one residence for personal use every two years, subject to licensing conditions15
- Floodplain development
- Local review may be required in mapped flood-hazard areas outside city limits16
- State-highway driveway
- A TDOT permit is required before construction, modification or a change in use on state right-of-way17
Who to call
Septic permits
TDEC Jackson Environmental Field Office
Septic-related inquiries for Henderson County
1625 Hollywood Drive, Jackson, TN 38305
Also useful
General county contact for confirming building, zoning and parcel-specific local requirements
17 Monroe Street Suite #4 Lexington, TN 38351
Roads & driveways
Henderson County Highway Department
County roads and rights of way
vineyard.steve@hendersoncountytn.gov
16075 Highway 412 East Lexington, TN 38351
Contact details are copied from each office’s official page and were checked against it on October 10, 2026.
Off-grid gear
Going off-grid in Henderson County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Henderson County, Tennessee?
Unincorporated Henderson County does not require a residential building permit1. Tennessee's statewide residential code program applies only in covered jurisdictions, while local governments remain responsible for locally adopted codes; the state residential permit does not provide zoning, septic, sewer, electrical, grading or floodplain approval18. An owner in a non-code jurisdiction may instead request a State Fire Marshal inspection; a qualifying one- or two-family dwelling receives a state certificate of occupancy only if it meets statewide safety standards19. Separate septic permits, local floodplain review and state-highway driveway approval still apply where required111617. Inside Lexington, applicants submit a building-permit request and plans to the city Codes Department, which enforces adopted building codes220. Lexington prohibits use of new construction or buildings altered in use or structure until the Building Inspector issues a certificate of occupancy confirming conformity with the ordinance4.
Who issues building permits in Henderson County, Tennessee?
Unincorporated Henderson County has no residential building permit to issue1. Inside Lexington, the City Building and Planning Department supplies the building-permit application and enforces building codes and municipal zoning2123. City authority does not take over septic: TDEC's Division of Water Resources administers the septic-permit process, and the Jackson Environmental Field Office lists Henderson County for septic inquiries51013. Henderson County Government remains the contact for questions about unincorporated zoning and parcel-specific local requirements714. For county-road frontage or right-of-way questions, contact the Henderson County Highway Department and ask whether an entrance standard applies22. A driveway connecting to state highway right-of-way requires a TDOT driveway permit17.
Does Henderson County, Tennessee have zoning?
We could not confirm whether unincorporated Henderson County has county zoning, so ask Henderson County Government whether a rural parcel has setbacks, lot-size, height or use limits714. Lexington has municipal zoning: the City Building and Planning Department enforces the zoning ordinance, and the published ordinance divides land inside the city into 14 districts323. Lexington's dimensional rules vary by district and use242526. The city department also enforces subdivision regulations inside Lexington27. Separate subdivision regulations extend through Lexington's planning region, where a covered plat must receive Planning Commission approval before recording with the County Register28. Scotts Hill has municipal land-use controls covering flood-damage prevention and subdivision standards; a conventional zoning-district schedule was not confirmed29. Septic permitting remains with TDEC in both Lexington and Scotts Hill3031.
How do septic permits work in Henderson County?
TDEC administers the statewide septic program and handles Henderson County unless a documented contract-county arrangement applies; Henderson County is not among the listed contract counties105. A septic permit is required before installing a new system or modifying or repairing an existing system, and it should be secured before dirt work or construction of a building pad begins11. Apply through the state's online septic service request; the site evaluation may require a site plan or soils map, and the house location and property lines must be marked32. Processing can take up to 45 days after a complete application, and the fee varies with system size and type3233. After installation, the installer must contact the local Environmental Scientist for final inspection before covering the system; TDEC issues a Certificate of Completion if approved6. Henderson County's soil data rates 0% of mapped soils as free of severe limitations for a conventional drain field, so make septic feasibility an early contract contingency34.
Can you live in an RV or tiny home in Henderson County?
We could not confirm a Henderson County rule that allows or prohibits living in an RV or tiny home on private land, and zoning in unincorporated areas remains unconfirmed7. Before buying, ask Henderson County Government whether the parcel is covered by rules for RV occupancy, temporary camping, minimum dwelling size, manufactured homes, accessory dwellings or setbacks147. A tiny home used as a residence still needs a septic permit when a system is installed, modified or repaired11. Lexington enforces municipal zoning and imposes placement, construction and utility requirements on manufactured residential dwellings, including a permanent masonry foundation and connections to electricity, water and sewer93536. Ask Henderson County Government about unincorporated occupancy rules and TDEC about off-grid sanitation or private-well requirements, which we could not confirm1413.
What are the steps to build a home in Henderson County?
- Confirm whether the parcel is inside Lexington, its planning region or unincorporated Henderson County because building-permit, zoning and subdivision processes differ12128.
- For unincorporated land, ask Henderson County Government whether county zoning or floodplain review applies; no residential building permit is required141716.
- Inside Lexington, submit the building-permit request and plans to the city Codes Department, then obtain the city's certificate of occupancy before using new construction or a building altered in use or structure24.
- Arrange septic feasibility before dirt work, then submit the TDEC service request with the site marked and accessible532.
- Budget for a variable septic fee; have the installer contact the local Environmental Scientist and leave the system uncovered for final inspection336.
- Confirm county-road access with the Highway Department, or obtain a TDOT driveway permit for state highway right-of-way2217.
- If acting as owner-builder, follow Tennessee's personal-use and contractor-licensing conditions15.
What should you check before buying land in Henderson County?
Verify the parcel's jurisdiction first because Lexington's codes and planning-region subdivision rules can differ from requirements elsewhere in Henderson County3728. Ask Henderson County Government about zoning status and local floodplain review; development in mapped flood-hazard areas outside city limits may be subject to locally managed requirements1416. Make septic feasibility a contract contingency because 0% of mapped county soils are rated free of severe limitations for a conventional drain field34. Confirm legal and physical access with the Henderson County Highway Department for county-road frontage; a driveway on state highway right-of-way requires TDOT approval2217. The county is 62.9% wooded and 67.3% of its land is at a slope of 15% or less, useful context for site layout rather than proof that a tract is buildable3839. The median property-tax bill is about $732 at an effective rate near 0.5%4041.
Watch-outs
- Countywide zoning remains unconfirmed, and Lexington's subdivision jurisdiction can extend into its planning region outside the city limits728.
- No residential building permit in unincorporated Henderson County does not remove separate septic-permit, floodplain or driveway requirements1111617.
- The septic installer must contact the local Environmental Scientist for final inspection before the system is covered6.
Sources
- TN State Fire Marshal - Apply for a Residential Permit (county list) (2026 county census)
- Lexington: Zoning Ordinance, Lexington, Tennessee (Henderson County), quoted and re-checked
- Lexington: Zoning Ordinance, Lexington, Tennessee (Henderson County), quoted and re-checked
- Lexington Zoning Ordinance enforcement provisions, quoted and re-checked
- Licensed Installers & Pumpers, quoted and re-checked
- Subsurface Sewage Disposal System Frequently Asked Questions, quoted and re-checked
- (2026 county census)
- Building Permit Application, quoted and re-checked
- Lexington, TN Planning & Codes, quoted and re-checked
- Online Application for Septic Related Services, quoted and re-checked
- Subsurface Sewage Disposal System (SSDS) Frequently Asked Questions, quoted and re-checked
- Subsurface Sewage Disposal System Frequently Asked Questions, quoted and re-checked
- TDEC Jackson Environmental Field Office (tn.gov)
- Henderson County Government (hendersoncountytn.gov)
- tn.gov, quoted and re-checked
- Statewide Floodplain Administrator Directory, quoted and re-checked
- Highway Entrance Permits, quoted and re-checked
- Statewide Building Construction Code Inspections in Opt-Out or Non-Code Jurisdictions, quoted and re-checked
- Statewide Building Construction Code Inspections in Opt-Out or Non-Code Jurisdictions, quoted and re-checked
- Lexington Planning & Codes, quoted and re-checked
- Planning and Codes, quoted and re-checked
- Henderson County Highway Department (hendersoncountytn.gov)
- Zoning Ordinance, Lexington, Tennessee, quoted and re-checked
- Lexington Zoning Ordinance, quoted and re-checked
- Lexington Zoning Ordinance, quoted and re-checked
- Lexington Zoning Ordinance, quoted and re-checked
- Planning and Codes, quoted and re-checked
- Municipal-Regional Subdivision Regulations, quoted and re-checked
- Town of Scotts Hill: Scotts Hill Municipal Code (Henderson County), quoted and re-checked
- Lexington: official source (Henderson County), quoted and re-checked
- Town of Scotts Hill: Subsurface Sewage Disposal System (SSDS) Frequently Asked Questions (Henderson County), quoted and re-checked
- Subsurface Sewage Disposal System Frequently Asked Questions, quoted and re-checked
- Subsurface Sewage Disposal System Frequently Asked Questions, quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- Zoning Ordinance, Lexington, Tennessee, quoted and re-checked
- Zoning Ordinance, Lexington, Tennessee, quoted and re-checked
- Planning and Codes, quoted and re-checked
- Wooded share of land: Bolthole Index county data
- Share of land at 15% slope or less: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
Written October 10, 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.