Building Setbacks & Zoning in Williamson County, TX (2026)

3 county-level rules, plus city-specific rules for 1 city in Williamson County, Texas.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Williamson County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Setback Rules

Williamson County sets no setback rules. Texas counties have no zoning power. Only subdivision platting under Local Government Code Chapter 232 applies, and in platted subdivisions HOA deed restrictions set the front, side, and rear yards.

Williamson County Property Setback Requirements

Few Restrictions

Tex. Loc. Gov't Code §232.001

The owner of a tract of land located outside the limits of a municipality must have a plat of the subdivision prepared if the owner divides the tract into two or more parts to lay out: (1) a subdivision of the tract, including an addition; (2) lots; or (3) streets, alleys, squares, parks, or other parts of the tract intended by the owner of the tract to be dedicated to public use.

Full ordinance details →Official source ↗

Structure Height Limits

Williamson County sets no building height limit. Texas counties lack zoning authority, so height caps in unincorporated areas exist only through HOA deed restrictions. Cities like Round Rock and Cedar Park regulate height inside their limits.

Williamson County Structure Height Limits

Few Restrictions

Tex. Loc. Gov't Code §232.001

The owner of a tract of land located outside the limits of a municipality must have a plat of the subdivision prepared if the owner divides the tract into two or more parts to lay out: (1) a subdivision of the tract, including an addition; (2) lots; or (3) streets, alleys, squares, parks, or other parts of the tract intended by the owner of the tract to be dedicated to public use.

Full ordinance details →Official source ↗

Lot Coverage Limits

Williamson County sets no lot-coverage or impervious-surface limit. Texas counties cannot zone. Coverage caps in unincorporated areas come from HOA deed restrictions and drainage rules tied to floodplain permits, not county ordinance.

Williamson County Maximum Lot Coverage Limits

Few Restrictions

Tex. Loc. Gov't Code §232.001

The owner of a tract of land located outside the limits of a municipality must have a plat of the subdivision prepared if the owner divides the tract into two or more parts to lay out: (1) a subdivision of the tract, including an addition; (2) lots; or (3) streets, alleys, squares, parks, or other parts of the tract intended by the owner of the tract to be dedicated to public use.

Full ordinance details →Official source ↗

Building Setbacks & Zoning by City in Williamson County

1 cities in Williamson County have their own building setbacks & zoning rules. Each link goes to that city's dedicated page with code citations.

Cedar ParkPop. 77,595

3 verified rules • Lot Coverage Limits, Setback Rules

All Williamson County ordinances

See every category we cover for Williamson County: parking, noise, fences, fires, animals, pools, and more.

Williamson County Ordinance Hub →