Generally speaking, you can't refuse to join a homeowners association. For a large majority of HOAs, membership is automatic and mandatory once you buy a home in the community. Membership, though, shouldn't come as a surprise. Your real estate agent and seller should inform you prior to closing that the home belongs in an HOA. Additionally, they should provide you with a copy of the association's governing documents and financials. This way, you can gauge whether or not joining that particular HOA is a good decision for you.