Martin County handles building permits for all unincorporated areas and the Town of Ocean Breeze. Incorporated municipalities including Stuart, Sewall's Point, and Jupiter Island maintain their own independent building departments and permitting processes. The county enforces strict coastal construction control lines and comprehensive wetland protection overlays for all development within its jurisdiction.
How this fits with the state
The state authority here is Florida DBPR - Construction Industry Licensing Board. The county file does not replace that — it adds the permit office, local overlays, and the actual filing path.