Co-Buying a Home With Family or Friends: What to Know Before You Commit

Buying a home with someone who isn’t your spouse — a sibling, parent, friend, or partner — has become increasingly common as buyers pool resources to afford more than either could alone. It can work beautifully. It can also go badly wrong. The difference is almost entirely in the planning done before closing.

How Co-Ownership Is Structured

When two or more unmarried people buy together, how the deed is titled matters enormously. The common structures include tenancy in common, where each owner holds a defined share that can be unequal and passes to their own heirs, and joint tenancy with right of survivorship, where ownership passes automatically to the surviving owner. Which structure fits your situation depends on your relationship, your contributions, and your intentions — and it’s a decision to make deliberately with your closing attorney, not by default.

The Mortgage Reality

Co-borrowers on a mortgage are each fully responsible for the entire payment — not just their share. If your co-buyer stops paying, the lender looks to you for the full amount, and missed payments damage both credit reports equally. This is the single most important thing to internalize before co-buying: you are financially tied to this person’s reliability in a way that a verbal agreement about splitting costs doesn’t change.

The Agreement You Need Before Closing

The co-buying arrangements that survive are the ones with a written co-ownership agreement — drafted with an attorney — addressing questions like how ownership percentages reflect unequal down payments or contributions, how monthly costs are split, what happens if one person wants out, how a buyout would be valued and executed, what happens if someone can’t pay their share for a period, and what happens if one owner dies or marries.

None of these questions are pleasant to negotiate with someone you love or trust. All of them are dramatically easier to negotiate before there’s a problem than during one.

Exit Planning Is the Whole Game

Nearly every co-buying arrangement eventually ends — someone marries, relocates, wants their equity out, or simply wants a change. The arrangement’s success is largely determined by whether the exit was planned at the start. An agreement with a clear buyout mechanism and valuation method turns a life change into a process; the absence of one turns it into a conflict.

When Co-Buying Genuinely Makes Sense

Pooling resources to enter the market sooner, splitting a larger property neither could afford alone, or helping a family member build equity are all legitimate reasons this structure exists. If you’re considering it, I’m happy to walk through the practical side and point you toward an attorney for the agreement itself. Reach me at 864.913.8295 or Ambur.Davis@Century21Blackwell.com.