Quick answer
The deed, agreements, estate status, and any family-court orders determine the legal starting point.
Do now
Gather ownership records, contributions, mortgage information, occupancy arrangements, and written agreements. Ask a lawyer about negotiated buyout, sale, accounting, partition, or the relevant family/estate process.
Watch for
Paying more expenses does not automatically make you sole owner. Do not lock out another person, forge a signature, or transfer their interest without authority.
Official sources
NJDOBI — Real Estate Consumer Information, DC Courts — Divorce, NY Courts — Divorce frequently asked questions, CFPB — Owner’s Title Insurance.
