What is subject-to in real estate?

Subject-to is buying a property while leaving the seller's existing mortgage in place. You take ownership and make the payments, but the loan stays in the seller's name — you haven't formally assumed or refinanced it.

Yes, subject-to transactions are legal in the U.S. when properly documented and disclosed. The complication is the mortgage's due-on-sale clause, not legality. Because the structure is nuanced, these deals should be done with a real estate attorney and clear paperwork.

What is the due-on-sale clause risk?

Most mortgages include a due-on-sale clause allowing the lender to demand full repayment if the property's title transfers. Lenders rarely invoke it while payments are current, but they legally can — which is the principal risk in a subject-to deal.

How is subject-to different from assuming a loan?

Assuming a loan means the lender formally approves you and you become legally responsible for the mortgage. In a subject-to deal there's no lender approval — the loan stays in the seller's name while you make the payments.

Financing

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Quick answer

In a subject-to deal, you buy a property "subject to" the existing mortgage — taking ownership while the seller's loan stays in place and you make the payments. You don't formally assume or refinance the loan, so you skip new qualification and often put little money down. The main risk is the lender's due-on-sale clause.

What "subject-to" means

A subject-to purchase means you take title to a property subject to the existing financing already on it. The seller's mortgage stays in their name, but you own the home and make the payments going forward. You haven't formally assumed the loan (which requires lender approval) or refinanced it — you've simply stepped into the property while the original loan rides along underneath.

Subject-to is most useful when a seller needs out fast and the existing loan has a lower interest rate than you could get today — you inherit that rate.

How a subject-to deal works

You and the seller agree on a price and that the existing mortgage stays in place.
Title transfers to you (often into a trust or LLC), but the loan remains in the seller's name.
You make the monthly mortgage payments — ideally through a servicer for a clear record.
You exit by reselling, refinancing into your own loan, or holding as a rental.

Benefits and risks

The appeal is speed and low cash: no new loan application, little or nothing down, and you may inherit a below-market interest rate. The risks are real, though. Almost every mortgage has a due-on-sale clause that lets the lender call the full balance due if the property transfers — they rarely do while payments are current, but they can. The loan also stays on the seller's credit, insurance must be handled correctly, and missed payments hurt the seller. Subject-to deals should be papered carefully with professional help.

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Frequently asked questions

What is subject-to in real estate?: Subject-to is buying a property while leaving the seller's existing mortgage in place. You take ownership and make the payments, but the loan stays in the seller's name — you haven't formally assumed or refinanced it.
Is subject-to legal?: Yes, subject-to transactions are legal in the U.S. when properly documented and disclosed. The complication is the mortgage's due-on-sale clause, not legality. Because the structure is nuanced, these deals should be done with a real estate attorney and clear paperwork.
What is the due-on-sale clause risk?: Most mortgages include a due-on-sale clause allowing the lender to demand full repayment if the property's title transfers. Lenders rarely invoke it while payments are current, but they legally can — which is the principal risk in a subject-to deal.
How is subject-to different from assuming a loan?: Assuming a loan means the lender formally approves you and you become legally responsible for the mortgage. In a subject-to deal there's no lender approval — the loan stays in the seller's name while you make the payments.