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Floodplain Development Permit Requirements

Martin County has adopted regulations on development in flood zones.  The purpose of these regulations is to control the alteration of the natural floodplains; prevent or regulate the construction of flood barriers which will unnaturally divert flood waters or which may increase flood hazards in other areas; restrict or prohibit uses which may result in damaging increases in erosion or in flood heights or velocities; and to control filling, grading, dredging, and other development which may increase flood damages.

Martin County currently regulates development of major projects within the natural flood plains through the development review process where engineering and environmental reviews are done prior to a development order being issued which allows construction to begin. On smaller projects proposed within the natural flood plains, building and/or engineering permits are required prior to construction, filling, or otherwise altering the natural elevations of a site.  Prior to considering any site development or construction work, it is recommended that either the Building Department or the Development Review Division be contacted so that the applicable process may be defined and the appropriate permits may be secured.

Elevation certificates are required as part of the permitting process for all newly constructed or substantially improved buildings in the Special Flood Hazard Areas of Martin County. A substantial improvement is defined as any repair, reconstruction, or improvement of a structure, the cost of which equals or exceeds fifty percent (50%) of the market value of the structure before the repair is started or if the structure is damaged and is being restored before the damage occurred. If you have any questions regarding the elevation certificates of any building, land filling, or other development in Martin County, contact the Engineering Department  at 288-5927.

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