You can go to just about any insurance company. Being that Manhattan Beach is located on a peninsula, it is most likely deemed a flood zone as are all the water/waterfront neighborhoods in Brooklyn. This means you will have to get additional flood insurance which is ultimately given though FEMA via your insurance company.
If I can be of further assistance please let me know. Good luck!
Mitchell S. Feldman
Associate Broker/ Director of Sales
Madison Estates & Properties, Inc.
Office: (718) 645-1665/ Cell: (917) 805-0783