How To Buy A House From A Family Member In A Non-Arm's Length Transaction

Buying a house from a family member can be a legitimate and smart way to become a homeowner, but it is not treated like a standard home sale.

When the buyer and seller already know each other, the deal is usually considered a non-arm’s-length transaction, which means lenders may apply more scrutiny to the price, the appraisal, the source of funds, and the paperwork.

That does not mean the sale is a problem, but does mean the transaction has to be handled carefully and documented like a real business deal.

Non-Arm’s-Length Transaction At A Glance

What Is A Non-Arm’s-Length Transaction

Fannie Mae defines a non-arm’s-length transaction as a purchase transaction in which there is a relationship or business affiliation between the seller and the buyer.

Essentially, it means the buyer and seller have a pre-existing relationship that could influence the terms of the deal. That relationship may be familial, personal, or business-related.

Because the parties are not negotiating as complete strangers, lenders want extra reassurance that the sale price reflects the real market and that the transaction is not masking an inflated value or undisclosed concession. Fannie Mae and Freddie Mac both explicitly recognize these transactions in their underwriting rules.

How It Differs From An Arm’s-Length Sale

In a standard (or arm’s-length) transaction, the buyer and seller are assumed to be acting independently and in their own financial interest.

In a non-arm’s-length transaction, the lender may take a closer look at:

• the contract price
  
  
• any discounts from market value
  
  
• the appraisal support
  
  
• the source of the buyer’s down payment
  
  
• whether the relationship was disclosed early
  
  

Key Differences Between Arm’s-Length And Non-Arm’s-Length Sales

Why Lenders Scrutinize Family Sales More Closely

Lenders aren’t trying to block family sales. They’re trying to make sure the mortgage is being made on a sound, supportable transaction.

Related-party deals can create added risk around inflated values, hidden concessions, and informal side agreements.

That’s why disclosure matters. If the seller is your parent, sibling, grandparent, in-law, or another related party, the lender should know that up front. Fannie Mae allows non-arm’s-length purchases of existing properties unless a specific scenario is prohibited, but the file still needs to make sense on its own merits.

Legal Considerations For Buying A House From A Family Member

Even when the deal is between relatives, it should be handled like any other real estate transaction.

Use A Real Purchase Contract

The sale should include a written purchase agreement that clearly covers:

• purchase price
  
  
• closing date
  
  
• inspection rights
  
  
• appraisal contingency
  
  
• repairs or credits
  
  
• any gift-of-equity terms
  
  
• what happens if financing falls through
  
  

Use Title And Escrow Services

A title company or settlement agent helps verify ownership, identify liens, document the transfer, and keep the closing process clean. That matters even more when family members are involved because it reduces the chance of later disagreement about what was promised.

Use A Real Estate Attorney When Needed

A real estate attorney can help review the contract, deed transfer, disclosure language, and any family-specific arrangements that could create risk later.

Lender Requirements And Mortgage Implications

Disclosure Of The Family Relationship

The lender should know as early as possible that the purchase is between related parties. Waiting too long to disclose that relationship can create avoidable underwriting problems.

Expect An Independent Appraisal

An independent appraisal is a valuation by a licensed appraiser who is not affiliated with either side of the deal. In a family sale, that appraisal is especially important because the lender needs proof that the value supports the transaction.

If the contract price is well below market value, that does not automatically kill the deal, but the lender will want to understand whether the difference is being treated as a gift of equity and whether the program allows it.

Understand The Underwriter’s Role

A mortgage underwriter is the person or team that reviews the file to decide whether the borrower, property, and transaction meet the lender’s and investor’s rules.

Loan Program Considerations For A Non-Arm’s-Length Mortgage

Conventional Loans

Conventional financing can work well for many family home purchases. Fannie Mae says non-arm’s-length transactions are allowed for the purchase of existing properties unless the specific scenario is prohibited.

That makes conventional financing a realistic option in many related-party deals, as long as the appraisal, documentation, and gift treatment all hold up.

FHA Loans

FHA loans can also be used in family sales, but related-party and identity-of-interest rules can create stricter treatment in some cases.

Because those rules are detailed and scenario-specific, borrowers should confirm current treatment with the lender and the applicable HUD handbook before assuming the same financing terms that would apply to a standard purchase.

VA And Other Programs

VA and other loan types may be possible depending on borrower eligibility and lender rules, but the same core issues still matter:

• full disclosure
  
  
• supportable value
  
  
• proper documentation
  
  
• acceptable source of funds
  
  

What A Gift Of Equity Means

A gift of equity is when the seller lets the buyer purchase the property for less than its market value, and the difference is credited from the seller’s equity.

Fannie Mae says a gift of equity is permitted on eligible principal residence and second-home purchase transactions and can generally be used for all or part of the down payment and closing costs, including prepaid items, but not financial reserves.

Gift Of Equity Example

In this example, the $40,000 difference may function as a gift of equity if the lender and loan program allow it and the required paperwork is complete.

Gift Of Equity Documentation

A lender will usually want documentation that clearly explains how the gift of equity works in the transaction.

Common documents include a signed purchase contract, independent appraisal, gift of equity letter, settlement statement or closing disclosure showing the credit, and proof that the donor is an acceptable donor under whatever loan program you’re using.

The documents should tell the same story from start to finish. If the appraisal, contract, and settlement statement do not line up, underwriting can slow down quickly.

Gift Tax Rules And Reporting

The IRS says the annual gift tax exclusion is $19,000 per recipient for 2025 and 2026. If a gift exceeds that amount, the donor may need to file Form 709 to report it. That does not necessarily mean gift tax will be owed, because many taxpayers are still protected by the much larger lifetime exemption.

For family home sales, the key point is that a gift of equity can create a reporting issue even when it does not create an actual tax bill.

Capital Gains And Other Seller Tax Issues

Selling below market value can affect the seller’s tax planning, especially if the home is not fully sheltered by the primary residence capital gains exclusion. The seller should understand:

• original cost basis
  
  
• improvement costs
  
  
• expected gain or exclusion treatment
  
  
• how the discounted sale and gift portion are being reported

This is one of the strongest reasons to involve a tax professional before closing.

Step-By-Step Guide To Buying A House From A Family Member

1. Get Preapproved

Talk to a lender before assuming the family sale will work as planned. Tell the lender immediately that the purchase is a non-arm’s-length transaction.

2. Set A Realistic Price

Agree on a sale price that is either market-based or clearly supported by a gift-of-equity structure.

3. Order An Independent Appraisal

Do not skip the appraisal. The lender usually needs it, and the buyer needs it for protection.

4. Get A Home Inspection

Buying from family is not a reason to skip inspection. A full inspection protects the buyer and can prevent future family conflict.

5. Prepare Gift-Of-Equity Documents Early

If the seller is providing equity as part of the transaction, the paperwork should be prepared before underwriting gets deep into the file.

6. Use Escrow And Title Insurance

Escrow helps manage funds and documents correctly. Title insurance helps protect against title defects and unresolved liens.

7. Review Tax And Legal Issues Before Closing

Tax and legal questions are much easier to solve before documents are signed than after the deal is done.

The Bottom Line

Buying a house from a family member in a non-arm’s-length transaction is possible, and in some cases it can be a smart path to homeownership.

But it needs to be handled like a formal real estate and mortgage transaction, not an informal family arrangement. Fannie Mae and Freddie Mac both recognize these transactions and allow them in many circumstances, but the file still has to make sense on paper.

The safest path is simple. Disclose the relationship early, strenuously document everything in writing, use an independent appraisal, handle any gifts of equity correctly, and involve both legal and tax professionals before closing.

Frequently Asked Questions

What Is A Non-Arm’s-Length Transaction In Real Estate?

A non-arms-length transaction is a purchase transaction where the buyer and seller have a pre-existing personal, family, or business relationship that can affect the terms of the sale. Fannie Mae and Freddie Mac both use definitions built around that concept.

Can You Get A Mortgage To Buy A House From A Family Member?

Yes. Many family home purchases can be financed, including with conventional loans, as long as the relationship is disclosed, the price is supportable, and the file meets lender rules.

What Is A Gift Of Equity?

A gift of equity is a seller credit from the seller’s equity in the property. Fannie Mae says it can generally be used for all or part of the down payment and closing costs on eligible principal residence and second-home purchases, but not reserves.

Do Sellers Owe Gift Tax On A Gift Of Equity?

Not necessarily. But the IRS annual exclusion is $19,000 per recipient for 2025 and 2026, and gifts above that amount may need to be reported on Form 709.

Do I Still Need An Appraisal And Inspection If I Am Buying From Family?

Usually yes. The lender will often need an independent appraisal, and the buyer should still get a home inspection to protect against condition problems and future disputes.