Much of Texas has no county zoning at all. Buildability is instead controlled by recorded deed restrictions, subdivision plats, city ETJ rules, on-site sewage facility (OSSF) sizing, and groundwater availability.
County seat: Houston
Harris County has no traditional county zoning, and the City of Houston has no zoning ordinance. Buildability is governed instead by deed restrictions, plat notes, drainage rules, and minimum lot size ordinances.
County seat: San Antonio
Inside San Antonio city limits, zoning applies; in unincorporated Bexar County there is no zoning, and platting plus OSSF rules control development.
County seat: San Marcos
Hays County sits on the fast-growing Austin–San Antonio corridor with a mix of Hill Country acreage and new subdivision lots.
County seat: Austin
Travis County pairs Austin's dense zoning code with unzoned county land governed by subdivision, water quality, and septic regulation.
Walk through a complete Land Feasibility Blueprint on a real parcel — USGS 3DEP slope profile, zoning and setback math, planning-office checklist, and full ARV/MAO underwriting.
Figures on this page are typical ranges compiled from published ordinances and public data for orientation only. Districts, overlays, and setbacks change — always verify the governing zoning district, minimum lot size, buffers, and septic requirements with the county planning office and health department before you buy or build. Read the full disclaimer.