Signature Building Systems serves all towns and counties in Westchester and Long Island, including:

Ardsley, Bedford, Briarcliff Manor, Bronxville, Buchanan, Cortlandt, Croton-on-Hudson, Dobbs Ferry, Eastchester, Elmsford, Greenburgh, Harrison, Hastings-on-Hudson, Irvington, Larchmont, Lewisboro, Mamaroneck, Mount Kisco, Mount Pleasant, Mount Vernon, New Castle, New Rochelle, North Castle, North Salem, Ossining, Peekskill, Pelham, Pelham Manor, Pleasantville, Port Chester, Pound Ridge, Rye, Rye Brook, Scarsdale, Sleepy Hollow, Somers, Tarrytown, Tuckahoe, White Plains, Yonkers, Yorktown

Amityville, Babylon, Bayville, Bellerose, Bellport, Brightwaters, Brookville, Cedarhurst, Centre Island, Cove Neck, Dering Harbor, East Hampton, East Hills, East Rockaway, East Williston, Farmingdale, Floral Park, Flower Hill, Freeport, Garden City, Glen Cove, Great Neck, Great Neck Estates, Great Neck Plaza, Greenport, Head of the Harbor, Hempstead, Hewlett Bay Park, Hewlett Harbor, Hewlett Neck, Huntington Bay, Island Park, Islandia, Kings Point, Lake Grove, Lattingtown, Laurel Hollow, Lawrence, Lindenhurst, Lloyd Harbor, Long Beach, Lynbrook, Malverne, Manorhaven, Massapequa Park, Matinecock, Mill Neck, Mineola, Muttontown, New Hyde Park, Nissequogue, North Hempstead, North Hills, Northport, Ocean Beach, Old Brookville, Old Field, Old Westbury, Oyster Bay, Oyster Bay Cove, Patchogue, Plandome, Plandome Heights, Plandome Manor, Poquott, Port Jefferson, Port Washington North, Quogue, Rockville Centre, Roslyn, Roslyn Estates, Roslyn Harbor, Russell Gardens, Saddle Rock, Sag Harbor, Saltaire, Sands Point, Sea Cliff, Shoreham, Smithtown, Southampton, South Floral Park, Stewart Manor, The Branch, Thomaston, Upper Brookville, Valley Stream, West Hampton Dunes, Westbury, Westhampton Beach, Williston Park, Woodsburgh, Babylon, Brookhaven, East Hampton, Hempstead, Huntington, Islip, North Hempstead, Oyster Bay, Riverhead, Shelter Island, Smithtown, Southampton, Southold