Buying a home in Ottawa, Illinois does not have to be difficult - Homes.com makes home buying a breeze. With 284 homes for sale in Ottawa, Illinois, you can search by price, bedrooms, neighborhood, and even by property type. Search Ottawa homes for sale, foreclosures, MLS listings, and more. Make an informed decision with Ottawa school data, neighborhood information, find Ottawa real estate agents, and research home values in Ottawa, IL. Homes.com has everything you need but the house keys.