McLennan County has limited jurisdiction over building permits, primarily focusing on unincorporated areas for septic and floodplain management. Incorporated cities like Waco, Hewitt, and Woodway maintain their own independent building departments and zoning authorities. Development in unincorporated areas must comply with county floodplain regulations and state-level septic 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.