Bell County primarily handles permits for unincorporated areas, while incorporated cities like Killeen, Temple, and Belton maintain their own building departments and zoning authority. The county engineering department oversees floodplain development permits and onsite sewage facility (OSSF) permitting for rural properties. Development in unincorporated areas must comply with county-specific subdivision regulations and fire code requirements.
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.