Building permits, zoning and septic rules across Tennessee's counties

For unincorporated land, 19 Tennessee counties do not require a residential building permit, 17 require one only in some cases, and 59 require one^1,6. The first counties to consider without a residential building permit are Pickett County, Stewart County, Hancock County, Bledsoe County, Humphreys County, Lewis County, Houston County, Decatur County¹. Use the Tennessee no-building-codes list to compare those counties¹.

The State Fire Marshal’s residential program applies where local enforcement or an opt-out does not displace it, using the 2018 residential and energy codes with amendments⁹. State-program building permits are purchased online or from an Issue Agent, with foundation, framing/rough-in and final inspections¹⁰. Tennessee’s owner-builder exemption covers a residence for individual use, not sale, lease or rent; it allows one permit every two years and requires licensing for anyone paid more than $25,000⁸. See the owner-builder county list alongside the state exemption conditions⁸.

Tennessee’s county totals identify a state septic agency in 87 counties, a multi-county health district in 2 and a county office in 6, with TDEC the most commonly named agency⁶. For application routing, the state’s contract-county list names Blount, Davidson, Hamilton, Jefferson, Knox, Madison, Sevier, Shelby and Williamson; applications for those locations go directly to the contract county³.

Tennessee requires a septic permit before construction, modification or repair, and the septic permit should precede building-pad work¹¹. A conventional system permit costs $400 and an alternative system permit $500 for design flow up to 1,000 gallons per day; higher flows carry additional fees¹¹. Construction inspections cost $100 for a new conventional system or $200 for an alternative system, and the system must be inspected before covering¹². TDEC conducts a site evaluation, so resolve wastewater feasibility before committing to a house location¹¹.

The highest Bolthole Index scores belong to Fentress County, Pickett County, Stewart County, Hancock County, Van Buren County, Bledsoe County, Humphreys County, Lewis County⁶. Fentress scores 91 and has limited residential building-permit requirements, no countywide zoning and state septic administration; Pickett scores 89 and has no residential building-permit requirement, unconfirmed zoning and state septic administration⁶. Stewart scores 88 and combines no residential building-permit requirement, no countywide zoning and state septic administration⁶.

For a cost comparison, the median county farmland value is $5,222 per acre; the lowest-value counties start with Chester County, Hardeman County, Decatur County⁶. Tennessee’s median county effective property-tax rate is 0.5%, and its median county tax bill is $865 annually⁶. Use those medians as county comparison figures rather than a parcel quotation, and pair the shortlist with septic feasibility and local floodplain review before buying^6,11,13.

Tennessee’s water-rights summary describes a riparian regime, with withdrawal registration above 10,000 gallons per day and agricultural and domestic exemptions¹⁴. Shelby County is listed within the Shelby County Ground Water Quality Control Board managed area for the Memphis Sand aquifer¹⁴. We could not confirm a separate statewide property-owner well-permit requirement; ask TDEC’s Water Well Program about the proposed well, distinguishing withdrawal registration from drilling requirements¹⁵.

A Tennessee utility system with the specified sewer-bond authority may require an existing building to connect when its parcel abuts a public way containing sanitary sewer¹⁶. For access, construction or a change to an existing driveway on state highway right-of-way requires a TDOT permit, including a change in use¹⁷. Floodplain development is reviewed locally, so contact the city administrator inside city limits or the county administrator outside them before grading or placing structures in a regulated floodplain¹³.