Buying a home in Onset, Massachusetts does not have to be difficult - Homes.com makes home buying a breeze. With 39 homes for sale in Onset, Massachusetts, you can search by price, bedrooms, neighborhood, and even by property type. Search Onset homes for sale, foreclosures, MLS listings, and more. Make an informed decision with Onset school data, neighborhood information, find Onset real estate agents, and research home values in Onset, MA. Homes.com has everything you need but the house keys.