Selling a House to a Family Member: What You Need to Know

Selling to someone you know — a child, sibling, parent, or close relative — accounts for a significant share of FSBO transactions. The NAR's 2025 data shows that 38% of FSBO sellers already knew the buyer before the sale. Selling within the family feels simpler: no showings, no strangers walking through the house, no competitive bidding.

But there are pitfalls that catch family sellers unprepared. Tax treatment, lender restrictions, and disclosure requirements don't go away because the buyer is your son-in-law.

Determine the Fair Market Value First

Before anything else, establish what your home is worth through a professional appraisal ($300–$500). This is more important in a family sale than in an open-market sale for two reasons:

Tax implications: If you sell below fair market value, the IRS may treat the discount as a gift. The 2026 annual gift tax exclusion is $18,000 per person. If you sell to your child for $50,000 below fair market value, you've made a $50,000 gift — significantly over the annual exclusion — and you or your child may need to file a gift tax return (Form 709), though gift tax itself is rarely owed until lifetime exemptions are exceeded.

The IRS's below-market loan rules: If you provide seller financing at below-market interest rates, the IRS treats the interest rate difference as imputed interest — income to you, potentially a gift to the buyer. Use current Applicable Federal Rates (AFR, published monthly by the IRS) if you're financing the sale yourself.

Lender restrictions: If the family member buyer is taking out a mortgage, their lender will require an independent appraisal. Most lenders won't fund a loan on a property being sold for more than 10% below appraised value without extensive documentation — this is called a "non-arm's-length transaction" and triggers enhanced underwriting scrutiny.

The Gift of Equity Option

A "gift of equity" is when you sell the home below market value and formally document the difference as a gift. This strategy is commonly used when parents want to help a child purchase a home — particularly for the down payment requirement.

How it works in practice: your home is appraised at $400,000. You sell it to your child for $360,000. The $40,000 discount is treated as a "gift of equity." The child's lender counts this $40,000 toward the down payment requirement. Many conventional loan programs and FHA loans allow gift of equity from family members.

The gift of equity must be documented with a formal gift letter that states the amount, that no repayment is required, and both parties' relationship. The lender will require this letter.

Tax considerations: the gift of equity is a taxable gift for federal purposes above the annual exclusion, but gift tax is rarely actually owed because of the lifetime exemption ($13.6 million in 2026 for individual filers). You may need to file Form 709 to document it, even if no tax is owed.

Disclosure Requirements Don't Change for Family Sales

Some sellers assume that because the buyer is family — and knows the house well — they can skip formal disclosures. This is legally incorrect in most states.

State disclosure laws apply to all residential sales, not just open-market sales between strangers. The federal lead-based paint disclosure requirement (for pre-1978 homes) applies regardless of the buyer's relationship to the seller.

Even if your child has visited the house for 20 years and is aware of the leaky basement, the formal disclosure creates a legally documented paper trail. If they later sell the property and a new buyer discovers an undisclosed defect, the question of what was originally disclosed becomes central to any litigation.

Complete the standard disclosure package as you would for any buyer. Document everything.

Use a Real Estate Attorney (Even More Than Usual)

Family real estate transactions have additional complexity that argues strongly for attorney involvement:

Clear title documentation: The deed and title transfer must be done correctly regardless of the relationship. A title search ensures there are no liens or encumbrances on the property before it transfers.

Proper contract: A verbal agreement between family members doesn't create an enforceable real estate contract. You need a signed purchase agreement with all the standard terms — price, closing date, contingencies, inclusions, and earnest money.

Estate planning coordination: If you're selling to a child who will eventually inherit the property anyway, the sale may interact with your broader estate plan in ways that require coordination with your estate planning attorney. Selling below market value changes the tax basis for capital gains purposes.

Sibling disputes: If the property was jointly owned or if other family members have a stake in the family's financial decisions, formalizing the sale process protects against future disputes. A clean paper trail — proper contract, proper pricing, proper disclosures — prevents "they sold it for too cheap" accusations years later.

If You're Providing Seller Financing

Some family sales skip the bank entirely — the seller holds the note and the buyer makes monthly payments directly. This is called a land contract, installment sale, or seller financing.

Requirements if you go this route:

• Document the loan with a formal promissory note and deed of trust (or mortgage) recorded with the county
• Use a market-rate or AFR interest rate to avoid IRS imputed interest rules
• Set a realistic amortization schedule
• Consult a tax advisor on installment sale reporting — income is recognized as payments are received, which may spread your capital gains tax liability

Seller financing within a family is common, but it needs the same legal documentation as any other mortgage. An unrecorded loan with a verbal agreement creates title problems when the property is eventually sold or when either party dies.

Capital Gains Considerations

When you sell your primary residence, the IRS provides a capital gains exclusion of $250,000 ($500,000 for married couples filing jointly) if you've owned and lived in the home for at least 2 of the last 5 years. This applies regardless of whether you sell to a family member or a stranger.

Selling below fair market value doesn't increase your capital gains exclusion — it reduces the proceeds but not the gain calculation, which is based on your original purchase price and capital improvements made during ownership.

If the sale exceeds the exclusion amounts, you owe capital gains tax on the excess at long-term rates (0%, 15%, or 20% depending on income). Factor this into the final price negotiation with your family member.

Selling to family works smoothly when both parties treat it with the same legal rigor as an open-market transaction. The emotional ease of the relationship doesn't reduce the legal complexity — it just makes it easier to skip steps you shouldn't.

The FSBO Complete Guide covers private sales, seller financing basics, and the paperwork checklist that applies whether you're selling to a stranger or your own child.