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

At a glance

Building permit

Required; county plan review, permitting and inspections apply⁶⁷⁸

Zoning

Yes in unincorporated areas; zoning districts and a map are published²⁹

RV living

Not allowed on residential lots except under temporary-use rules¹⁰

Septic

TDEC permit, site evaluation and final inspection before covering¹¹¹²⁴

Tiny homes

Limited; a trailer-frame tiny home cannot be a permanent residence¹³

Owner-builder

Allowed: one permit every two years for your own home, not for sale or rent¹⁴¹⁵

Certificate of occupancy

Required after final inspection and before residential occupancy⁵

Property tax

About 0.5% effective rate; median bill about $1,944 a year¹⁶¹⁷

Who to call

Contact details are copied from each office’s official page and were checked against it on October 9, 2026.

Do you need a building permit in Sumner County, TN?

Yes. Unincorporated Sumner County, Tennessee requires a residential building permit, subject to the adopted code's listed exemptions¹. Sumner County Building & Codes administers plan review, permitting and inspections, and every new-construction application also goes through zoning review⁷⁸¹⁸. The required inspection sequence runs from footing and underground plumbing through foundation, sill plate and waterproofing, rough-in, framing, and final plumbing, mechanical and structural inspections¹⁹. A residential dwelling cannot be occupied until the permit holder requests a final inspection, the county performs it and Building & Codes issues a certificate of occupancy⁸⁵.

A Tennessee owner may build a single residence for personal use without a contractor license, limited to one permit every two years; the home cannot be for sale, lease or rent¹⁵. Anyone the owner pays more than $25,000 is a prime contractor who must be licensed¹⁵. County zoning generally cannot regulate a building that is incidental to an agricultural enterprise on agricultural land, but the state exemption has location exceptions, including the one-hundred-year floodplain²⁰.

An agricultural exemption applies only to the specific use described in a submitted Zoning Compliance application, not to the property generally, and an agricultural structure in the 100-year floodplain must still meet FEMA elevation or floodproofing rules²¹.

Who issues building permits in Sumner County, and how do you reach them?

The Sumner County Building & Codes Department is at 355 N. Belvedere Drive, Room 208, Gallatin, TN 37066, phone (615) 452-1467²². Contact that office about building permits, plan review, inspections and certificates of occupancy⁷⁸⁵. The county publishes a new-construction permit process and supporting planning and zoning documents²³.

Sumner County Planning & Zoning is at 355 N. Belvedere Dr., Room 202, phone (615) 451-6097²⁴. Engineering & Floodplain Administration uses the same address and phone number and coordinates development in designated FEMA flood zones²⁵²⁶. TDEC, rather than the county, handles septic permitting and inspections; applications are online at tdec.tn.gov/septic¹¹²⁷. The Sumner County Highway Department handles work on county road rights-of-way, while a driveway on state highway right-of-way requires a TDOT permit²⁸²⁹.

Does Sumner County have zoning?

Yes. Sumner County zoning applies to land use and new construction in the county's unincorporated planning area; incorporated municipalities may administer their own rules³⁰¹⁸. The county publishes its zoning resolution, zoning districts and map, and the current resolution is listed as effective 12/8/25⁹. Sumner County also regulates subdivision proposals, so a tract's zoning does not by itself establish that it can be divided³¹.

Development limits depend on the parcel's district and use. Maximum building height is district-specific, with the Agricultural Reserve and Rural Residential tables listing 35 feet³². Maximum lot coverage is also district-specific; residential development in those two districts is listed at 20%³³. Minimum residential lot sizes depend on the district: 15 acres in AR, 40,000 square feet in RR and 20,000 square feet in SR³⁴. The AR district front, rear and side setbacks are 75, 30 and 20 feet, and a five-foot setback from recorded easements generally applies³⁵. An accessory dwelling unit must be at least 300 square feet, one is allowed per lot with an owner living on site, and a lot with septic needs at least 40,000 square feet³⁶. New mobile homes are allowed only in the AR and MHC districts, or as an accessory unit by special exception on at least five acres with medical-hardship documentation³⁷. Ask Planning & Zoning to confirm the current district, permitted use, setbacks, height, coverage and subdivision path before designing around a parcel²⁴. Sumner County's mobile-home instructions separately require setbacks to conform to zoning³⁸.

How do septic permits work in Sumner County?

TDEC, not Sumner County, administers septic permits and inspections³. A permit is required to construct, modify or repair a septic system, and a TDEC Environmental Scientist evaluates the site to determine the required system type¹²¹¹. Apply online at tdec.tn.gov/septic before committing to a house location²⁷. For the county building permit, a septic property needs septic approval and a valid permit or affidavit of disclosure; a property using sewer instead needs a paid sewer-tap receipt³⁹.

When installation is complete, the installer must schedule TDEC's final inspection before covering the system; approval results in a Certificate of Completion⁴. Only 21.1% of Sumner County soils avoid a severe limitation rating for a conventional drain field, so make the site evaluation an early purchase contingency⁴⁰. The county requires environmental completion documentation before issuing the certificate of occupancy where it applies³.

Can you live in an RV or tiny home on your land in Sumner County?

Sumner County does not allow recreational vehicles or camping trailers to be used for living, sleeping or housekeeping on residential lots except under its temporary-use rules¹⁰. A bona fide visit by relatives or invited guests may last no more than 14 days per visit in a calendar year¹⁰. Temporary occupancy during construction, renovation, or recovery from fire or natural disaster requires a temporary-use permit and approved water, sewer and electric service¹⁰.

Sumner County treats a tiny home on a trailer frame as a recreational vehicle and does not allow it as a permanent residence¹³. A tiny home on skids must be secured to a permanent foundation and anchored against wind uplift, and a newly constructed tiny home needs a certificate of occupancy before anyone moves in¹³. A delivered, preassembled tiny home goes through the State Fire Marshal's modular-building inspection program⁴¹. We could not confirm a countywide minimum dwelling size, so ask Planning & Zoning about the parcel's district²⁴.

Building a home in Sumner County: what are the steps, in order?

1. Ask Sumner County Planning & Zoning to confirm the parcel's district, use, setbacks, height, lot coverage and subdivision status^9313233.
2. If the site is in a designated FEMA flood zone, obtain county floodplain review before development²⁶.
3. Secure TDEC septic approval or a paid sewer-tap receipt, plus a water-tap receipt or water-well driller's report³⁹⁴².
4. Obtain the county-road driveway permit when applicable; the Highway Department checks the proposed connection with Stormwater Management⁴³. A state-highway driveway instead requires a TDOT permit²⁹.
5. Submit the county permit packet with the required property records, site plan, construction plans, contractor credentials when applicable, land-disturbance documents, zoning packet and tax documentation⁴⁴.
6. Schedule county building inspections and TDEC's final septic inspection before the system is covered⁸⁴.
7. Request the final building inspection and obtain the certificate of occupancy before moving in⁵.

What should you check before you buy land in Sumner County, Tennessee?

Confirm the parcel's zoning district and subdivision history before paying for development potential; Sumner County publishes the district framework and regulates land subdivision in unincorporated areas⁹³¹. Confirm buildable area as well as use because height and lot-coverage limits vary by district³²³³.

Make septic feasibility a purchase contingency: only 21.1% of Sumner County soils avoid a severe limitation rating for a conventional drain field, and TDEC determines the system type through a site evaluation⁴⁰¹¹. Confirm whether the parcel can document a water tap or well-driller's report and either septic approval or a sewer tap for the permit packet⁴². Development in a designated FEMA flood zone requires county coordination and review²⁶.

Confirm which agency owns the road before assuming access is settled: county-road connections require the county process, while state-highway connections require TDOT approval⁴³²⁹. Ask Building & Codes for current permit charges and the Adequate Facilities Tax before budgeting²².

Watch-outs

• Sumner County requires the final building inspection and certificate of occupancy before a new residence is occupied⁵.
• A tiny home on a trailer frame is treated as a recreational vehicle in Sumner County and cannot be a permanent residence¹³.
• District-specific height and lot-coverage limits can reduce the buildable envelope even when the proposed use is allowed³²³³.
• TDEC must inspect a newly installed septic system before the installer covers it⁴.
• Sumner County prohibits using an RV for living, sleeping or housekeeping on a residential lot except under its temporary-use rules¹⁰.

Sources

1. Building & Codes, quoted and re-checked
2. Planning and Zoning - Sumner County, TN, quoted and re-checked
3. Subsurface Sewage Disposal System Frequently Asked Questions, quoted and re-checked
4. Subsurface Sewage Disposal System Frequently Asked Questions, quoted and re-checked
5. Certificate of Occupancy/Temporary Certificate of Occupancy, quoted and re-checked
6. Building & Codes (2026 county census)
7. Building & Codes, quoted and re-checked
8. Building & Codes - Sumner County, TN, quoted and re-checked
9. Planning and Zoning - Sumner County, TN, quoted and re-checked
10. Sumner County Zoning Resolution, quoted and re-checked
11. Subsurface Sewage Disposal System Frequently Asked Questions, quoted and re-checked
12. Subsurface Sewage Disposal System Frequently Asked Questions, quoted and re-checked
13. Sumner County Zoning Resolution, quoted and re-checked
14. Can I build my own home without a license? (2026 county census)
15. Can I build my own home without a license? (Tennessee statewide rule), quoted and re-checked
16. Effective property tax rate: Bolthole Index county data
17. Median property tax bill: Bolthole Index county data
18. Planning and Zoning, quoted and re-checked
19. Sumner County Required Inspections, quoted and re-checked
20. Exemption from County Zoning Regulation for Buildings on Land Used for Agriculture, Opinion No. 22-07 (Tennessee statewide rule), quoted and re-checked
21. Statement of Agricultural Exemption, quoted and re-checked
22. Sumner County Building & Codes Department (sumnercountytn.gov)
23. Planning and Zoning - Sumner County, TN, quoted and re-checked
24. Sumner County Planning & Zoning (Planning and Engineering Department) (sumnercountytn.gov)
25. Sumner County Engineering & Floodplain Administration (sumnercountytn.gov)
26. Engineering and Floodplain Administration - Sumner County, TN, quoted and re-checked
27. Tennessee Department of Environment and Conservation, Division of Water Resources (septic permits) (tn.gov)
28. Sumner County Highway Department (sumnercountytn.gov)
29. Highway Entrance Permits (Tennessee statewide rule), quoted and re-checked
30. Sumner County Zoning Resolution, quoted and re-checked
31. Planning and Zoning - Sumner County, TN, quoted and re-checked
32. Sumner County Zoning Resolution, quoted and re-checked
33. Sumner County Zoning Resolution, quoted and re-checked
34. Sumner County Zoning Resolution, Effective 12/8/25, quoted and re-checked
35. Sumner County Zoning Resolution, Effective 12/8/25, quoted and re-checked
36. Sumner County Zoning Resolution, Effective 12/8/25, quoted and re-checked
37. Sumner County Zoning Resolution, Effective 12/8/25, quoted and re-checked
38. Sumner County Building & Codes Department, mobile home permitting and inspections (sumnercountytn.gov)
39. Subsurface Sewage Disposal System Frequently Asked Questions, quoted and re-checked
40. 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
41. Tennessee State Fire Marshal's Office tiny home inspection program (notice posted by Sumner County Building & Codes) (sumnercountytn.gov)
42. Building Permit Application, quoted and re-checked
43. Highway Department, quoted and re-checked
44. Building Permit Application, quoted and re-checked

Written October 9, 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.