Miami, FL Environmental Rules: Mangrove Protection (2026)

The Florida Mangrove Trimming and Preservation Act (§403.9321 through §403.9333, Florida Statutes) provides the statewide framework for mangrove protection, and Miami-Dade County has been delegated local enforcement authority. Exemption from permitting: waterfront property owners may trim mangroves that do not exceed 10 feet in height, provided they are not trimmed below 6 feet and the trimming does not result in removal, defoliation, or destruction of the mangroves. Mangroves between 10 and 24 feet may be trimmed by a Professional Mangrove Trimmer (PMT) under a general permit, with trimming limited to 25% of the foliage. Mangroves over 24 feet or alteration beyond the general permit thresholds require an individual permit from Miami-Dade County DRER. Complete removal of mangroves requires mitigation — typically replanting at a ratio determined by the permitting agency. Miami-Dade County's Class I permit process covers mangrove trimming alongside dock and seawall work. Mangroves serve as critical storm surge buffers, fish nursery habitat, and erosion control — their destruction significantly increases coastal vulnerability. Any violation is presumed to occur with the knowledge and consent of the property owner under §403.9332.