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.
Franklin, TN
The City of Franklin does not have a specific ordinance prohibiting or regulating artificial turf on residential lots. Synthetic turf may be installed in rea...
Franklin, TN
Franklin does not require native-plant landscaping, but the Tree Commission maintains a Recommended Tree List that prioritizes species suited to Middle Tenne...
Franklin, TN
Rainwater harvesting is legal and unregulated for residential use throughout Tennessee — including Franklin. There are no volume limits, no permit requiremen...
Franklin, TN
Under Franklin Municipal Code Title 9 Chapter 11 (Mobile Food Vending), adopted Aug. 28, 2023, mobile food units in Franklin may operate ONLY on developed an...
Franklin, TN
Operating a food truck in Franklin requires a Mobile Food Vendor Permit from Building & Neighborhood Services (BNS), governed by Title 9 Chapter 11 (Mobile F...
Franklin, TN
Federal law (FAA Part 107 for commercial; 49 U.S.C. § 44809 for recreational) governs the airspace over Franklin — the City cannot regulate altitude or fligh...
See how Franklin's lot coverage limits rules stack up against other locations.
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