What Is Seller Financing in Real Estate? (Complete Guide for Home Buyers)

Seller financing — sometimes called owner financing or a purchase money mortgage — is a transaction structure where the seller of a property acts as the lender instead of a bank. Instead of the buyer getting a mortgage from a financial institution, the seller extends credit directly. The buyer makes monthly payments to the seller, typically over a defined term, until the debt is paid off or refinanced.

How Does Seller Financing Work?

In a seller-financed transaction, the buyer and seller agree on:

• Purchase price — the total amount being financed (or partially financed)
• Down payment — the amount the buyer pays upfront in cash
• Interest rate — the rate the seller charges on the balance
• Loan term — how long the buyer has to pay, often 5-30 years
• Amortization — whether payments are fully amortizing or balloon
• Balloon payment — a large lump sum payment due at the end of the term, common in shorter seller finance arrangements

The buyer receives title to the property and a promissory note is executed. The seller holds a lien on the property — usually a deed of trust in Texas — as security for the loan. If the buyer defaults, the seller can foreclose.

When Does Seller Financing Make Sense?

Seller financing is most common when:

• The buyer cannot qualify for a conventional mortgage — due to self-employment income, credit issues, or a recent major financial event
• The property does not qualify for conventional financing — unusual property types, condition issues, or non-warrantable characteristics
• The seller owns the property free and clear and wants a steady income stream from the payments
• The seller wants to spread capital gains recognition over time using the installment sale method
• Both parties want to close quickly without the time and friction of bank underwriting

Advantages for Buyers

• Flexible qualification — terms are negotiated between buyer and seller, not dictated by bank underwriting guidelines
• Faster closing — no bank appraisal, underwriting, or processing delays
• Negotiable terms — interest rate, down payment, and loan structure are all negotiable
• Bridge to conventional financing — a buyer who improves their credit or income over the balloon period can refinance into a conventional loan at the end

Risks for Buyers

• Due-on-sale clause risk — if the property has an existing mortgage, the seller's lender may call the loan due when ownership transfers (this is a serious risk and must be investigated)
• Balloon payment risk — if you cannot refinance or pay off the balloon at maturity, you could lose the property
• Higher interest rates — seller financing rates are often above prevailing market rates
• Title and lien issues — use a title company and get title insurance; verify the seller has clear title

How Is Seller Financing Documented in Texas?

In a Texas residential transaction, seller financing is handled through the Seller Financing Addendum — a TREC-promulgated form that supplements the base purchase contract. The addendum specifies:

• The loan amount and interest rate
• Payment amount and due date
• Whether there is a balloon payment, and when
• Interest-only period terms if applicable
• Late payment charges
• Prepayment penalties (or absence thereof)
• What happens in the event of default

Modeling Seller Finance Numbers

Before agreeing to seller financing terms, model the full picture of the transaction:

• What is the monthly payment at the proposed rate and term?
• What is the balance owed at the balloon date?
• Can you realistically refinance or pay off that balance?
• What is the total cost of the deal compared to conventional financing?

Transaction IQ's Deal Calculator includes a dedicated Seller Finance mode that lets you model all of these variables instantly — payment, balloon balance, total interest, and effective annual cost.

Frequently Asked Questions

What is seller financing in real estate?

Seller financing is when the seller provides financing directly to the buyer instead of the buyer using a bank or traditional mortgage lender.

Is seller financing a good idea?

It can be beneficial depending on the terms negotiated, but it requires careful evaluation of costs, risks, and the seller's existing loan situation before committing.

Does seller financing require a down payment?

Often yes, but the down payment amount is negotiated directly between buyer and seller rather than dictated by bank underwriting guidelines.

Is seller financing legal in Texas?

Yes. Texas seller financing must comply with state and federal lending laws, and transactions are typically documented using the TREC Seller Financing Addendum along with a promissory note and deed of trust.