Fillmore Real Estate, Brooklyn's top real estate agency, is expanding its horizons. Big time. The 41-yearold firm, founded by Bill Reinhardt and now run by his son John and other family members, just purchased all 1,400 local area listings from the recently bankrupt Foxtons. It gives Fillmore an immediate presence in the Bronx, Queens and Staten Island. With 500 current agents and 17 offices in Brooklyn, Fillmore will hire at least 40 of Foxtons' agents to ease the transition and help homebuyers get faster access to all of their listings. Fillmore has also upped its presence representing developments. They just became the exclusive broker for the MeadowWood at Gateway, an extremely affordable complex where units range in price from $100,000 to $340,000. Located on Brooklyn's Flatlands Ave. near the Gateway Center Mall with Target, Old Navy, Home Depot and Bed Bath & Beyond, the development is geared toward first-time home buyers. The 18-building complex with highrises and townhouses has newly manicured fields and a state-of-the-art security system. Fillmore agent Jean-Paul Ho runs the sales office. Call (718) 927-0004.