Permits in Forrest County are split between incorporated municipalities and the county jurisdiction. The cities of Hattiesburg and Petal manage their own building permits and zoning enforcement within city limits. The county building department oversees development and permitting for all unincorporated areas of the county.
How this fits with the state
The state authority here is Mississippi State Board of Contractors. The county file does not replace that — it adds the permit office, local overlays, and the actual filing path.