Co-buying a home with family or friends: How it works and how to protect everyone

Written by Samantha SheltonNMLS 1647301Updated September 2026

Three friends moving boxes into a foursquare house together after co-buying a home with family or friends

This article is for informational purposes only and is not intended to provide legal, financial, or tax advice. Consult a qualified professional about your situation.

Co-buying a home with family or friends means two or more people share the purchase, the mortgage, and the title. Pooling incomes and down payments to afford more house than any one buyer could alone. Every co-borrower on the mortgage is liable for 100% of the payment, not just their share, and conventional loans underwritten through Fannie Mae’s Desktop Underwriter accept up to four borrowers on one application.

Two structural decisions protect everyone. Choose the right title form. Joint tenancy for equal shares with rights of survivorship, or tenancy in common for unequal shares you can each will to your own heirs. Then sign a written co-ownership agreement covering cost splits, house rules, and exit terms before you close, not after the first disagreement.

Affordability drives most of these deals: two or three incomes on one application clear a payment none of you could carry alone. Co-buying is one of the buying strategies and situations that change which lender approves your file. Learn more about co-buying a home with family or friends, including how to hold title, how the joint mortgage works, and what belongs in your agreement.

Key takeaways:

Pooled income buys more house: Co-buying puts multiple incomes and down payments on one application, conventional loans run through Desktop Underwriter accept up to 4 borrowers, which can significantly increase what the group qualifies to purchase together.
Joint liability is the catch: Every borrower on the mortgage owes 100% of the payment, not a share of it, and one co-owner’s missed contribution or credit problems affect everyone on the loan.
Put it in writing first: A written co-ownership agreement covering ownership shares, expense splits, and exit rules is the difference between a smart partnership and a future legal dispute.

How do you choose the right co-buying partners?

The right co-buyer is the person whose credit, cash, and five-year plan you have actually seen on paper. That matters in dollars, because a conventional loan prices off the group’s lowest credit score, one partner at 640 sets the rate for two partners at 760.

Credit you have seen, not described: Fannie Mae’s Selling Guide has the lender take each borrower’s applicable score, the lower of two, or the middle of three, then use the lowest score in the group as the loan’s representative score. Pull the real numbers before you shop.
Debt, added up honestly: Every co-borrower’s car payment, student loan, and card minimum lands in the same qualifying math, so calculate each person’s debt-to-income (DTI) ratio before you tour a house.
A shared timeline and shared rules: If one of you plans to relocate in three years and another wants to hold for a decade, write the exit terms accordingly. Settle who lives there, who gets which bedroom, and whether anyone rents a room.
Red flags worth walking away from: A partner who won’t share a credit report, carries undisclosed debt, has no reserves after the down payment, or treats a written agreement as an insult.

Shore up the weakest file first, credit and qualifying is where a group gains the most ground.

How should co-buyers hold title?

Most co-buying groups hold title as tenants in common, because tenancy in common allows unequal ownership shares, 60/40, or 50/25/25, while joint tenancy requires equal shares with rights of survivorship. It’s decided in one line of wording on the deed at closing; changing it later means recording a new deed.

Separate two documents people confuse. The deed says who owns the home; the mortgage says who owes the debt, and they can name different people, the same distinction that drives the legal considerations of buying a home with a partner.

What is joint tenancy with rights of survivorship?

Joint tenancy with rights of survivorship is a form of co-ownership that gives each owner an equal share, with that share passing automatically to the surviving owners when one of them dies. Three joint tenants each own an undivided one-third no matter who paid more of the down payment, and the transfer at death happens outside probate. Overriding whatever the deceased owner’s will says about the house.

What is tenancy in common?

Tenancy in common is a form of co-ownership in which each owner holds a separate, transferable share, equal or unequal, that they can sell or leave to their own heirs instead of to the other owners. Put in 60% of the cash and you can record a 60% interest, which is why unequal down payments almost always point here. Any co-owner can also ask a court to order a partition, a division or forced sale, which is slow and expensive next to a buyout clause you wrote yourselves.

Joint tenancy vs. tenancy in common at a glance

Feature	Joint tenancy with rights of survivorship	Tenancy in common
Ownership shares	Equal by definition (50/50, or one-third each)	Any split you record (60/40, 50/25/25)
When one owner dies	Share passes automatically to the survivors	Share passes to that owner’s heirs or estate
Can you will your share?	No. Survivorship overrides the will	Yes to anyone you name
Probate on the home	Generally avoided	Generally required for the deceased owner’s share
Best for	Equal contributors who want the survivors to keep the home	Unequal contributors, friends, and anyone with their own heirs

Give your wording to the settlement agent a week before closing, not at the table, and confirm what each owner’s title insurance policy covers, the American Land Title Association publishes the standard forms.

How does the joint mortgage work with multiple borrowers?

The lender combines every borrower’s income and every borrower’s debt into one file, then prices the loan off the lowest credit score in the group. Desktop Underwriter accepts up to four borrowers on a loan casefile; a fifth person forces manual underwriting, which narrows your lender choices.

Joint liability is the part groups underestimate. If one co-owner stops contributing, the rest of you owe the full amount, and a 30-day late lands on every co-borrower’s credit report at once.

Occupancy changes the terms: When a co-borrower won’t live in the home, a parent helping an adult child, say, Fannie Mae caps the loan-to-value at 95% on a Desktop Underwriter casefile, so the group needs at least 5% down.
First-time buyer status is a group asset: On a conventional purchase above 95% and up to 97% loan-to-value, at least one borrower must be a first-time home buyer, no ownership interest in a property in the past three years. One qualifying partner opens the 3%-down door for everyone.
Down payments are documented per person: Each borrower’s funds get traced to their own accounts, and a gift needs its own signed gift letter.

Here’s the math. Say three friends buy a $360,000 home in Waterford with 5% down, $18,000, or $6,000 apiece. Their combined income qualifies, but if one buyer’s middle score is 640 while the other two sit at 760, the file prices as a 640 loan. On a $342,000 loan, a quarter-point rate difference is roughly $50 a month and about $18,000 over 30 years.¹ Get a fully underwritten mortgage preapproval for the group before you write an offer.

How co-buying works by loan type

Conventional: The most flexible option for unrelated co-buyers. Up to four borrowers, down payments from 3% when one is a first-time buyer, and a 95% ceiling when someone on the loan won’t occupy the home.
FHA: Built for weaker credit. A 580 score generally supports the 3.5% minimum down payment, and scores of 500 – 579 need 10% down. Non-occupying co-borrowers are limited to one-unit properties above 75% loan-to-value, and HUD expects a family or documented longstanding relationship.²
VA: A veteran can buy with a non-veteran who isn’t a spouse, but VA guarantees only the veteran’s portion, the loan divided by the number of borrowers, times the number of veterans using entitlement. Some lenders decline a partial guaranty outright.³
USDA: Eligibility is measured on the whole household, not just the borrowers. The guaranteed loan program caps household income at 115% of the area median, so a third earner can disqualify a group that would otherwise fit.

Because Align is a broker, we can move a three-borrower or non-occupant-co-borrower file to the lender whose guidelines fit it, overlays on multi-borrower loans vary widely across our network of wholesale lenders.

What your co-ownership agreement must cover

A co-ownership agreement is a private contract among the buyers, and a usable one answers nine questions before anyone signs a purchase agreement. It’s the cheapest document in the transaction and the one people skip.

Settle the tax questions in the same sitting, because three federal rules follow ownership rather than friendship. Contributing more than your recorded share can be treated as a gift, and the IRS annual gift tax exclusion is $19,000 per recipient for 2026. Per IRS Publication 936, the mortgage interest deduction belongs to someone legally liable on the debt who pays the interest, so an owner who isn’t on the note generally can’t deduct it. At sale, a single filer meeting the two-year ownership and use tests can exclude up to $250,000 of gain under IRS Publication 523, applied to that owner’s share.⁴

Ownership percentages: State each person’s exact share as a number and record the deed to match. A side letter contradicting the deed invites the fight you’re preventing.
Initial contributions: List the earnest money, down payment, and closing costs each person paid, with dates, this ledger decides who gets what at sale.
Monthly cost splits: Spell out how the mortgage, taxes, insurance, HOA dues, and utilities divide, and whether that changes if one income does.
Repairs and improvements: Set a dollar threshold above which every owner signs off, and say whether an improvement one person funds alone raises their percentage.
House rules: Occupancy, bedrooms, guests, pets, subletting, and quiet hours, the things that feel too obvious to write down.
What happens if someone can’t pay: Give a cure period, then say what the covering owners get: a documented loan, or added equity credited at sale.
Dispute resolution: Require mediation before anyone can sue, and consider binding arbitration to stay out of court.
Death and disability: Say what happens to each share, back it with actual wills, and price a term life policy sized to fund a buyout.
The exit strategy: Give remaining owners a right of first refusal at appraised value, name the appraisal method, set a closing window in days, and state that a buyout requires a refinance to remove the departing owner from the mortgage. If nobody buys the share in time, a listing deadline triggers and proceeds split by recorded percentage.

Have a real estate attorney draft or review it, and have each buyer’s own attorney read it. The tradeoffs behind these clauses are laid out in the pros and cons of co-buying with friends.

How to buy a home together, step by step

The process mirrors a solo purchase with two additions: everything gets documented per person, and the group decides on a deadline. Budget an extra two weeks up front for paperwork.

Have the money conversation: Scores, debts, cash on hand, and job stability, shared openly. Nothing after this step works without it.
Get preapproved as a group: Every buyer submits income, asset, and credit documentation together so the approval reflects the real file. Our home buying guide walks the document list, and the home buying process maps what follows.
Draft the co-ownership agreement: Do this before you fall in love with a house, while everyone is still negotiating in the abstract.
Agree on search criteria in writing: Price ceiling, minimum bedrooms, commute limits, deal-breakers. A one-page list prevents the third-showing argument, which is why knowing how to choose a real estate agent matters more with a group.
Make offers as a group: Decide in advance who signs, what your true ceiling is, and how fast you’ll answer a counter. If you land in competition, know how to handle a bidding war first. A group can’t caucus in 20 minutes.
Close with the deed wording confirmed: Review the deed, the Closing Disclosure, and each person’s wire instructions days ahead. The CFPB’s home buying resources explain the disclosures every borrower signs.

Build the team early: a real estate attorney for the agreement and deed, an agent used to multi-buyer offers, an insurance agent who will name every owner on the policy, and a broker who can price the file across lenders. If anyone in your group hasn’t owned before, our first-time home buyers hub covers the assistance you can stack.

How Align fits your buying strategy

Local real estate agents bring Samantha in for a second opinion when their buyer arrives preapproved somewhere else. She regularly finds a lower rate or less cash to close, whichever helps the buyer more.

That comes from the broker model. One application goes to multiple wholesale lenders, so your offer is built on the loan that fits your situation, not the only one a single bank sells. A 2024 Polygon Research analysis of federal mortgage data found broker borrowers paid about $10,662 less over the life of a $400,000 loan than borrowers at nonbank retail lenders.

Build your homebuyer game plan

Sources: Polygon Research, Loan Costs Channel Study 2024 (2023 federal HMDA data, 30-year fixed purchase loans; commissioned by United Wholesale Mortgage and Willow Canyon Advisors).

FAQ: Co-buying a home with family or friends

Here are answers to common questions about co-buying a home with family or friends.

Can friends or siblings get a mortgage together?

Yes. Most loan programs allow multiple unrelated or related borrowers on one application; conventional loans commonly accept up to four. The lender combines everyone’s incomes and debts to qualify the group, but usually prices the loan using the lowest borrower’s credit score. All co-borrowers sign the note and share full liability for the entire payment, regardless of internal splits. Check each person’s debt-to-income ratio before you apply.

Should friends buy a house as joint tenants or tenants in common?

Most co-buying groups choose tenancy in common because it allows unequal shares matched to unequal contributions, and each owner can leave their share to their own heirs. Joint tenancy requires equal shares and passes a deceased owner’s interest automatically to the survivors, which most friends and siblings don’t want. Confirm the choice with a real estate attorney before closing, the deed controls. The same decision drives buying a home with a partner.

What should a co-ownership agreement between friends include?

Cover each person’s ownership percentage and contribution, how the mortgage, taxes, insurance, utilities, and repairs split, occupancy and guest rules, a process for one owner selling or being bought out (including how the price gets set), what happens if someone can’t pay, dispute resolution such as mediation, and death or disability provisions. Put it in writing and have an attorney review it. The pros and cons of co-buying with friends covers what each clause protects you from.

What happens if one co-owner wants out?

Your agreement should already answer this, typically the remaining owners get a right of first refusal to buy the departing share at an appraised value, with refinancing to remove that person from the mortgage. Without an agreement, a frustrated co-owner can file a partition lawsuit forcing a sale of the whole property, an expensive outcome that written buyout terms are designed to prevent. Plan the buyout financing when you plan the exit, using our refinancing guide.

The bottom line on co-buying a home

Co-buying a home with family or friends pools two or more incomes and down payments onto one purchase, one mortgage, and one deed, and conventional loans accept up to four borrowers on a single application. Two decisions carry the arrangement: joint tenancy means equal shares passing automatically to the survivors, while tenancy in common lets you record 60/40 or any split matching what each person contributed, and a signed co-ownership agreement sets everything else. Whatever the deed says, every borrower owes 100% of the payment, which is why the exit plan and the financing plan get written together.

If you’re ready to buy a home with your family or friends, talk to Align Lending, we structure multi-borrower loans and we’ll shop your group’s scenario across our lender network, then show you the numbers side by side. Call 248-506-5727 or get started online today.

Footnotes:

Example figures are hypothetical and for educational purposes only; they do not constitute an advertisement of credit terms or a rate quote under federal or state lending laws. Your rate and terms will depend on your application and market conditions. Return to text
Align Lending is not acting on behalf of or at the direction of FHA or HUD. FHA requirements are set by HUD and are subject to change, and lenders in Align’s network may apply additional requirements. Return to text
Align Lending works with VA-approved lenders and is not endorsed or sponsored by the Department of Veterans Affairs or any government agency. Return to text
This article is for informational purposes only and is not intended to provide legal or tax advice. The tax treatment of co-ownership, gifts, interest deductions, and gain on sale depends on your circumstances. Consult a qualified tax professional and a licensed attorney about your situation. Return to text

This article is for informational purposes only and is not intended to provide legal, financial, or tax advice. Consult a qualified professional about your situation. Program terms and figures shown are illustrative, are not a rate quote or an offer of credit, and are subject to change. Align Lending is an independent Michigan mortgage broker, NMLS #2041154.