The county controls development intensity mainly through minimum lot area and residential density rather than a single lot-coverage percentage, under Tenn. Code Ann. §13-7-101. Impervious surface and stormwater standards apply on top.
Rather than a flat coverage percentage, Williamson County's Zoning Ordinance limits how much a lot can be built out through minimum lot area and gross residential density set by district. The Rural Preservation District-5, for example, allows one unit per 5 acres, and the Voluntary Agricultural district requires 15-acre lots. Article 16 performance standards and the county's stormwater rules then regulate impervious surface, since the ordinance is written to encourage reducing impervious cover. The combined effect keeps unincorporated parcels low-intensity. Inside Franklin and Brentwood, each city's zoning sets its own coverage and impervious limits.
The county planning department enforces density and lot-area rules at plat and permit review, and can withhold approval. Excess impervious surface can trigger stormwater controls under the county's land-disturbance rules.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Williamson County, TN
Williamson County has no ordinance regulating holiday lights, inflatables, or yard displays on residential property, and Tennessee has no state law on them. ...
Williamson County, TN
Yard-sale signs are allowed on private property in Williamson County, but no temporary sign may sit in or project into the public road right-of-way. Roadside...
Williamson County, TN
Williamson County's sign ordinance allows political signs on private property with the owner's permission, up to five per parcel and 30 square feet total. Si...
Williamson County, TN
Williamson County runs no rental registration or landlord licensing. There is no county registry, annual rental permit, or mandatory rental inspection, so a ...
Williamson County, TN
Tennessee has no just-cause eviction law, and Williamson County cannot add one. Under §66-28-512 a landlord ends a month-to-month tenancy with 30 days' writt...
Williamson County, TN
Rent control is illegal across Williamson County. Tennessee Code §66-35-102 bars every county and city from enacting or enforcing any ordinance controlling t...
See how Williamson County's lot coverage limits rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.