What types of property may be insured against flood loss?
Almost every type of walled and roofed building that is principally above ground and not entirely over water may be insured if it is in a participating community. In most cases, this includes manufactured (i.e., mobile) homes that are anchored to permanent foundations and travel trailers without wheels that are anchored to permanent foundations and are regulated under the community's floodplain management and building ordinances or laws. (However, this does not include converted buses or vans.) Contents of insurable walled and roofed buildings also may be insured under separate coverage.
What kinds of property are not insurable under the NFIP?
Buildings entirely over water or principally below ground, gas and liquid storage tanks, animals, birds, fish, aircraft, wharves, piers, bulkheads, growing crops, shrubbery, land, livestock, roads, machinery or equipment in the open, and most motor vehicles are not insurable. Most contents and finishing materials located in a basement or in enclosures below the lowest elevated floor of an elevated building constructed after the FIRM became effective are not covered. (See "Coverage" section for coverage limitations in basements and below lowest elevated floors.) Information on the insurability of any special property may be obtained by contacting a property insurance agent or a broker.




http://www.fema.gov/business/nfip/fiprobyr.shtm#24