Buying Property With Siblings or Parents: A Co-Owner's Guide

Buying property with siblings or parents works when the family decides four things before it signs a contract: how title will be held, how the mortgage will be qualified and paid, how money and use will be shared, and how anyone can leave. Millions of families already share a roof, and the same planning applies when relatives share land or several houses. This guide sets out the options for siblings, for parents and adult children, and for families who pool money to buy land for a family compound.

Which way of buying property with family fits your situation?

Pick the setup that matches who lives there, who pays and how the money moves. The table covers the five situations that come up most often. It is a starting point, and the ownership structures guide compares the legal forms in more detail.

Can you get a mortgage when family members buy together?

Yes, but the lender qualifies each person on the loan, and a relative who does not live in the home is treated differently from one who does. Fannie Mae defines a non-occupant borrower as someone on a principal residence loan who does not occupy the property, signs the note, shares joint liability and has no stake in the sale. That person may or may not be on title. On a manually underwritten loan that uses the non-occupant borrower’s income, the occupying borrower must fund the first 5 percent of the down payment from their own funds, with exceptions when the loan-to-value is 80 percent or less or when the occupying borrower can use gifts, grants or employer funds. The loan-to-value caps are 90 percent for manual underwriting and 95 percent for Desktop Underwriter (Fannie Mae B2-2-04).

Co-borrowing has costs for the family. Each person on the loan is liable for the full debt, so one sibling’s missed payment becomes everyone’s problem. The financing guide explains the loan types for a multi-home purchase, including portfolio and jumbo loans and how an LLC changes the options. Lender rules change, so confirm the current terms with the lender before you rely on any of these figures.

Can parents give money toward the purchase?

Yes. A relative can give gift funds for a down payment or closing costs on a principal residence or second home, and Fannie Mae counts a relative as the borrower’s spouse, child or other dependent, or anyone related by blood, marriage, adoption or legal guardianship. The donor signs a gift letter that states the amount, says no repayment is expected and lists the donor’s name, address, telephone number and relationship to the borrower. Gifts are not allowed on an investment property (Fannie Mae B3-4.3-04). If relatives plan to rent out a home, ask the lender how it will be classified before you count on gift money.

Gift tax is a separate question. In 2026 the federal annual exclusion is $19,000 per recipient, and the lifetime exemption is $15 million per person, according to Morgan Lewis’s summary of the IRS figures. Larger gifts generally require a gift tax return even when no tax is due. The taxes guide covers gifts, sales to relatives and basis.

How do co-owners share tax deductions?

Each co-owner can deduct the share of mortgage interest and property taxes that they legally owe and actually paid. The IRS FAQ on two unmarried people who own a home together says that when each pays half from a joint account, each should deduct one-half, even though the lender sends Form 1098 to only one of them. The co-owner who receives the form claims their half on Schedule A, line 8a. The other claims their half on line 8b and attaches the recipient’s name and address with an explanation of each person’s share (IRS FAQ). Keep records of the mortgage date, the use of the loan proceeds and how the payments were split for at least three years after filing.

Two cautions apply. Whether you itemize at all depends on your own return, and unequal contributions can create gifts between co-owners. Run the plan past a CPA before the first payment.

How should co-owners split costs, use and decisions?

Put the answers in writing before closing, not after the first disagreement. Oral deals about land are hard to enforce and easy to dispute. An Iowa State University law center article on Stenoien v. Stenoien describes a family that made an oral agreement to repurchase a farm and ended up in litigation, and the Iowa Court of Appeals sent the case back for trial on whether exceptions to the statute of frauds applied. The article’s advice is to put agreements in writing, especially among family (Iowa State CALT).

A written co-ownership agreement should cover:

• Money in. Each person’s down payment and share of closing costs, and whether ownership percentages follow contributions.
• Money out. Who pays the mortgage, taxes, insurance and repairs, and how unequal payments are credited.
• Use. Who lives there, who visits and for how long, and whether someone pays rent to the others.
• Exit. A right of first refusal, a buyout formula and a timeline, and what happens at death, divorce or job loss.

The family compound agreement checklist has the full list of clauses, and the guide on making a family compound work includes a calculator for splitting shared costs.

What happens if one sibling or parent wants out?

A co-owner who wants out can usually ask a court for a partition, and when the property cannot be divided fairly the court may order a sale. The agreement is the cheaper fix. A right of first refusal makes the departing owner offer their share to the others first, and a buyout formula, such as an appraisal by an agreed appraiser, tells everyone the price in advance. Land that passes to several heirs without a plan faces the same risk, which the guide on family compound inheritance explains.

Frequently asked questions

Can siblings buy a house or land together? Yes. Siblings can buy together as tenants in common or through an LLC, and they can share one mortgage. Each person on the loan is liable for the whole debt, so sign a written agreement that sets contributions, shared costs and a buyout rule before closing.

Can my parents co-sign or co-borrow on my mortgage? Yes. Fannie Mae allows a non-occupant borrower, who signs the note and shares liability without living in the home and does not have to be on title. On a manually underwritten loan, you generally need to fund the first 5 percent of the down payment yourself, and the loan-to-value cap is 90 percent.

Can my parents give me money for the down payment? Yes, for a principal residence or second home. The donor signs a gift letter that states the amount and that no repayment is expected. Gifts above $19,000 per recipient in 2026 generally require the donor to file a gift tax return, though most families owe no tax because of the lifetime exemption.

Who gets the mortgage interest deduction when family members co-own? Each co-owner deducts the share they legally owe and actually paid, even if the lender sends Form 1098 to only one of them. Keep records of who paid what.

What if one sibling wants out of the property? The leaving owner can usually ask a court for a partition, which may force a sale. A right of first refusal and a buyout formula in a written agreement let the others buy the share at a price set in advance.

Conclusion

Buying property with siblings or parents succeeds when the family treats it as a shared business decision: choose a title form, qualify the loan honestly, document gifts, split deductions as the IRS describes and agree on the exit before anyone needs it. Start with the ownership structures guide, draft the agreement with an attorney and then browse family compounds for sale with the numbers in hand.

This guide is general information, not legal, tax or lending advice. Lender rules, tax figures and state property law change and differ by state, so confirm every point with your lender, a CPA and a local real estate attorney before you buy. The Fannie Mae rules cited apply to loans sold to Fannie Mae. Last reviewed October 11, 2026.