The City of San Angelo handles the vast majority of urban permitting within its jurisdiction, while the Tom Green County Development Department oversees unincorporated areas. County oversight is primarily focused on septic systems, floodplain development, and subdivision platting rather than vertical building construction. Unincorporated areas generally do not require building permits for residential structures, though floodplain development permits are strictly enforced.
The county enforces strict On-Site Sewage Facility (OSSF) permitting and inspection requirements for all properties in unincorporated areas not served by municipal sewer systems.
How this fits with the state
The state authority here is Texas Department of Licensing and Regulation; Texas State Board of Plumbing Examiners. The county file does not replace that — it adds the permit office, local overlays, and the actual filing path.
Source · City-by-city; San Angelo and other municipalities manage their own building permits and inspections.Last verified · 05 / 2026