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

Unincorporated Decatur County is opted out of Tennessee's State Residential Building Program for one- and two-family homes; that designation does not establish the county's commercial, assembly or electrical requirements¹. State residential building permits apply to covered homes and townhouses in Decaturville, Parsons and Scotts Hill¹. A state residential building permit does not replace septic, electrical, zoning, grading or floodplain approvals⁴. In the county's opt-out area, an owner or contractor may obtain a state permit and request State Fire Marshal inspections; a qualifying dwelling can receive a certificate of occupancy¹². Tennessee's owner-builder rule allows one residence for personal use every two years without a contractor's license, provided the home is not for sale, lease or rent; hired work at or above $25,000 remains subject to contractor licensing⁶.

Start by locating the parcel relative to Decaturville, Parsons and Scotts Hill, because those municipalities participate in the state residential permit program while Decatur County is opted out¹. Where the state program applies, buy the permit online or from a local Issue Agent; the published fee schedule starts at $100 for construction costing up to $5,000 and $350 for construction costing $5,001 through $100,000, with listed inspection add-ons^13,14. Parsons separately requires building and zoning permits and inspections^2,4. For a home in the opt-out area, contact the Tennessee State Fire Marshal's Office if financing or another transaction calls for inspected work and a certificate of occupancy¹². Decatur County also requires a new-address application with a location and driveway map; processing usually takes at least 5 days¹⁵.

We could not confirm whether unincorporated Decatur County has zoning, setbacks or a minimum dwelling size; ask the county mayor's office about the parcel before buying. Parsons requires zoning permits alongside building permits and publishes a zoning map and ordinance². In Parsons, single-family lots need 10,000 square feet in R-1 and 7,500 square feet in R-2¹⁶. Scotts Hill, which reaches into Decatur County from Henderson County, has municipal land-use provisions covering flood-damage prevention and subdivision standards; a conventional zoning-district schedule could not be confirmed⁹. Septic permits remain with TDEC inside town limits³.

A state report's 2020 table lists no county subdivision regulations, regulations in Parsons, and none in Decaturville or Scotts Hill; confirm current requirements with the county mayor's office or town because Scotts Hill's municipal code contains subdivision standards^8,9. Tennessee's agricultural zoning exemption applies only outside municipalities to structures on agricultural land that are incidental to the farm enterprise, with highway, airport, park and floodplain exceptions¹⁷. Processing plants and similar facilities have no blanket exemption; a commercial sawmill using off-site timber does not qualify as incidental to farming on the underlying land¹⁷.

TDEC's Division of Water Resources processes septic applications and inspections for Decatur County; submit applications and fees through the state service-request form³. Obtain a septic permit for construction, modification or repair, and obtain the permit before dirt work or construction of the building pad⁵. New conventional permits cost $400 for flows up to 1,000 gallons per day; alternative permits cost $500 at that flow, and repair permits have no permit fee⁵. Inspection is separate: conventional and repair inspections cost $100, while alternative-system inspections cost $200⁵. The installer must arrange a final inspection before covering the system; approval leads to a Certificate of Completion⁵. Only 4.8% of Decatur County soils are rated without severe limits for a conventional drain field, so make soil evaluation an early purchase contingency¹¹. TDEC also requires subdivision review for septic-served development unless every resulting tract is at least 5 acres³.

Long-term RV residence and tiny-home occupancy on private land in Decatur County could not be confirmed, either for the unincorporated county or its municipalities. The county describes long- and short-term RV campsite rentals at Perryville Marina, but that parcel-specific commercial use does not establish what is allowed on a private homesite⁷. The county also describes tent and RV camping at Beech Bend Campground; one particular site is limited to daily or weekly rental for a maximum of 3 weeks, which likewise is not a countywide private-land rule⁷. Before buying for an RV or tiny-home plan, ask the county mayor's office about the parcel and ask the applicable municipality if it lies inside town limits. Separately, any septic system serving the use needs the state permit and inspection process⁵.

1. Confirm whether the site is in unincorporated Decatur County or inside Decaturville, Parsons or Scotts Hill; the municipalities participate in the state residential program while the county is opted out¹.

1. Ask the county mayor's office or municipality about zoning, floodplain review, setbacks and the intended dwelling type; Parsons has confirmed municipal zoning².

1. Arrange the soil work and obtain the TDEC septic construction permit before grading the building pad^3,18.

1. Where the state residential program applies, purchase the building permit online or from an Issue Agent and budget from the state fee schedule^13,14.

1. Apply for the new county address with the required location and driveway map; requests usually need at least 5 days¹⁵.

1. If access meets a state highway, obtain the TDOT permit before work; residential and field applicants contact the local TDOT District Office¹⁹.

1. Keep the septic system uncovered until the required final inspection is complete⁵. In an opt-out area, arrange voluntary State Fire Marshal inspections if you need a certificate of occupancy¹².

Treat septic feasibility as a deal-stage question: only 4.8% of Decatur County soils are rated without severe limitations for a conventional drain field¹¹. Confirm the boundary and municipal status because state residential permits apply in Decaturville, Parsons and Scotts Hill but the county is opted out¹. If a tract will be divided for septic-served development, ask TDEC about subdivision evaluation; the cited state process excludes a division only when every resulting tract is at least 5 acres³. For a state-highway entrance, TDOT permission is required before driveway construction, modification or change of use¹⁰. Water and sewer connection requirements could not be confirmed countywide, so ask the utility serving the parcel before assuming a well or septic system is available. The county is 72% wooded and 68.6% of its land has slopes of 15% or less, useful screening clues that do not replace a parcel survey or site visit¹¹.