The term Oxford House refers to any house operating under the 'Oxford House Model', a community-based approach to addiction treatment, which provides an independent, supportive, and sober living environment. Today there are nearly 2,000 Oxford Houses in the United States and other countries. The term Oxford House refers to any house operating under the 'Oxford House Model', a community-based approach to addiction treatment, which provides an independent, supportive, and sober living environment. Today there are nearly 2,000 Oxford Houses in the United States and other countries.