Buying a home in Sullivan County, New York doesn't have to be difficult - Homes.com makes home buying a breeze. With 3,112 homes for sale in Sullivan County, New York, you can search by price, bedrooms, neighborhood, and even by property type. Search Sullivan County homes for sale, foreclosures, MLS listings, and more. Make an informed decision with Sullivan County school data, neighborhood information, find Sullivan County real estate agents, and research home values in Sullivan County, NY. Homes.com has everything you need but the house keys.