![]() Constructed using flood resistant materials,.Have appropriately sized, placed and number of approved flood vents,.If enclosed, this non-habitable area must: If there's useable space between the ground and bottom of the house, it's considered non-habitable space, used solely for minimal storage, parking, and access to higher levels. New construction allowed under Rate of Growth Ordinances (ROG) or Building Permit Allocation System (BPAS) have a minimum elevation of BFE plus eighteen inches. New construction and substantial renovations are required to have the First Finished Floor at a minimum height of Base Flood Elevation (BFE) Plus one-foot. Only one set of plans is needed, not a set for each application. Important Note: Each building needs its own Building Permit Application, even if they're on the same lot. Within these higher elevations, construction is mostly unregulated for floodplain purposes. There are two "X" zones within the city, mostly encircling the highest areas of the downtown or the Old Town section of the city. ![]() (For additional information on this historic building exemption, see Historic Building Exemptions. However, these buildings are often significantly below flood levels, and will result in drastically higher premiums for flood insurance if not elevated. Some historic buildings are exempt from building elevation requirements when being renovated. If, for example, the land is determined to be four (4) feet above sea level, then the building would need to be three (3) feet above the ground. An Elevation Certificate is usually needed to determine the height of the land above sea level. Thus, a new or elevated building in an "AE-6" flood zone would need to be elevated elevated to a minimum of seven (7) feet above mean-sea-level. Building codes usually require one extra foot of elevation, known as the Design Flood Elevation (DFE).īuilding codes require most new and Substantially Improved buildings be at a minimum height of BFE plus one-foot. A building below BFE is a building below the flood level for that site. The BFE is a flood level reference height for building elevations and flood insurance. That BFE number notes the height above sea level flood waters can be expected to rise. ![]() The "E" denotes this flood zone has an elevation level assigned to it, and is expressed as "AE-6" or "VE-9," with the trailing number indicating the Base Flood Elevation (BFE) for that zone. Type "V" and "A" zones appear on flood maps as "AE-#" and "VE-#. As a consequence, building standards are much higher within "V" zones. The "V" stands for "velocity," or breaking waves with a force that's considerably more damaging. Land close to the shoreline is usually located in type "V" flood zones. These are zones more inland from the coastline, where a static rise in water levels can be expected. In Key West, most buildings/lots are located within type "A" flood zones. Construction standards vary depending upon the site's flood zone rating.
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