5 county-level rules, plus city-specific rules for 4 cities in Bexar County, Texas.
Verified from official government sources
San Antonio allows ADUs in many residential zones subject to UDC size limits, owner-occupancy, and parking rules. Unincorporated Bexar County has no ADU ordinance but requires septic sizing.
Bexar County does not regulate sheds in unincorporated areas — Texas counties have no general zoning authority. A county permit is only triggered if the shed sits in a FEMA floodplain or affects drainage. HOA covenants and city limits may add rules.
Converting a garage in San Antonio requires a building permit, egress windows, insulation, and often replacement parking. Unincorporated Bexar County needs no permit but HOA rules apply.
San Antonio treats carports as accessory structures subject to setback, height, and permit rules. Unincorporated Bexar County has no permit requirement, but HOAs commonly restrict metal units.
Bexar County cannot restrict tiny homes in unincorporated areas. Texas counties have no zoning or minimum dwelling-size authority. Tiny homes on foundations are treated like any single-family dwelling; a septic (OSSF) permit is required, and floodplain rules apply if applicable.
4 cities in Bexar County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Bexar County — parking, noise, fences, fires, animals, pools, and more.
Bexar County Ordinance Hub →