Cap rate (capitalization rate) is net operating income divided by purchase price. It tells you the unleveraged return a property generates. A $300,000 property producing $18,000 NOI has a 6% cap rate. It's the most common metric for comparing rental properties because it strips out financing and gives you an apples-to-apples comparison.

What is a good cap rate for rental property?

For residential rentals, 5-8% is generally considered solid. Above 8% is excellent but often comes with higher risk (rougher neighborhoods, older buildings, declining markets). Below 5% is common in expensive metros where investors rely more on appreciation than cash flow.

How is cap rate different from cash-on-cash return?

Cap rate ignores financing — it measures the property's return as if you paid all cash. Cash-on-cash return measures your actual return on the cash you invested, factoring in your mortgage. A property with a 6% cap rate could yield a 12% cash-on-cash return with leverage.

What is the 1% rule in real estate?

The 1% rule says monthly rent should be at least 1% of the purchase price. A $200,000 property should rent for at least $2,000/month. It's a quick screening tool — many successful rentals don't pass the 1% rule, especially in higher-priced markets.

What is the BRRRR strategy?

BRRRR stands for Buy, Rehab, Rent, Refinance, Repeat. You buy a distressed property below market value, renovate it, rent it out, then do a cash-out refinance based on the new appraised value to pull out most or all of your original capital and repeat the process.

Where does CapRateCity get its data?

Our city-level data draws from publicly available sources including U.S. Census Bureau population and income figures, Zillow Home Value Index for median prices, HUD Fair Market Rents, and state/county tax assessor records. Data is updated periodically.

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Subject-To Financing Explained: Buying Houses with Existing Loans

Take title to a property while leaving the seller's mortgage in place. Powerful, controversial, and full of nuance — here is how subject-to actually works in 2026.

By NumbersLab · 9 min read

Subject-to is one of the most powerful and most misunderstood financing strategies in real estate. The deal in one sentence: the seller transfers the deed to you, but the mortgage stays in the seller's name and you make the payments. You get the property. They get out from under it. The bank is technically not involved.

Done right, subject-to is a way to buy properties at low rates that no longer exist in today's market — picking up 3% mortgages from 2020 in a 7% world. Done wrong, it is a fast track to foreclosure for both sides. This guide walks through how subject-to actually works and the real risks.

How Subject-To Works

The mechanics are simple. At closing, the seller signs a deed transferring ownership to you. The deed is recorded with the county. From that day forward, you are the legal owner — you can rent, renovate, sell, or refinance the property. But the original mortgage stays in the seller's name, and you (or your servicing company) make every monthly payment going forward.

The seller's credit reflects the loan as long as it stays in their name. As long as you pay on time, their credit gets the benefit. If you stop paying, their credit takes the hit and the bank can foreclose on the property — wiping out your ownership.

Subject-to deal = deed in your name + mortgage in seller's name + your monthly payments

Is Subject-To Legal?

Yes. Selling a property "subject to" an existing mortgage is legal in all 50 states. The transaction is recorded with the county and is fully transparent. There is no fraud — it is simply a sale where the buyer agrees to make payments on a loan that remains in the seller's name.

What makes it controversial is the due-on-sale clause.

The Due-on-Sale Clause

Almost every conventional mortgage contains a due-on-sale (or "alienation") clause. It says: if you transfer the property to anyone else, the lender can call the entire loan due immediately. This was put in place by Congress in the 1980s to prevent buyers from assuming low-rate mortgages without the lender's approval.

The lender can demand full payoff. In practice, they almost never do — as long as payments are being made on time. From the bank's perspective, a performing loan is a performing loan; calling it due forces them to refund all that interest income and find a new borrower.

But the right is real. If the bank discovers the transfer (often through insurance changes or property tax notices) and decides to enforce, you have 30 to 60 days to refinance the entire loan or face foreclosure. That risk is the single biggest issue in any subject-to deal.

Reality check: Major banks called due on a few subject-to deals during the high-rate era of the early 1980s. Since then, enforcement has been rare. But "rare" is not "never" — and 2026's higher-rate environment may shift that calculus. Plan for the possibility.

When Subject-To Makes Sense

Motivated seller with a low-rate mortgage

The classic case. A seller bought in 2020 and locked in a 3% mortgage. In 2026, that loan is worth thousands. They are in financial distress and need out fast — divorce, job loss, relocation. A traditional sale takes 60 days and a 3% rate loan is replaced with a 7% rate loan. A subject-to deal closes in 7 days and preserves the cheap mortgage.

Equity-poor properties

The seller owes nearly what the property is worth. A traditional sale nets them almost nothing after agent commissions. Subject-to lets them walk away clean while transferring the loan and obligation.

Sellers facing foreclosure

A seller behind on payments faces foreclosure in 60 to 90 days. A subject-to buyer can bring the loan current at closing and take over future payments — saving the seller's credit and giving themselves a property at a discount.

Inherited or unwanted properties

A property inherited from a parent that the heir does not want to manage. Selling traditionally takes time. Subject-to closes immediately and shifts management to a new owner.

How to Structure a Subject-To Deal

Down payment to seller

Sometimes zero, sometimes $5,000-$25,000 to give the seller moving money. The lower the down payment, the better your cash-on-cash return — but the harder it is to motivate the seller. See cash-on-cash return for the math.

Authorization to release information

Have the seller sign a form authorizing the bank to discuss loan details with you. This lets you confirm payment status, balance, and avoid surprises after closing.

Power of attorney

A limited power of attorney from the seller authorizing you to handle the loan, talk to the bank, and modify insurance.

Land trust (optional)

Many subject-to investors place the property into a land trust before transfer. This obscures the ownership change and reduces the chance the lender's automated systems trigger a due-on-sale review. The Garn-St. Germain Act of 1982 specifically allows transfer to a revocable land trust without triggering the due-on-sale clause for owner-occupants.

Loan servicing company

Use a third-party servicer to make payments. This creates a paper trail and reduces friction with the seller.

Insurance Considerations

The existing homeowner's policy is in the seller's name. After a subject-to transfer, you need a policy that covers the new owner (you) while keeping the bank as the mortgagee on the existing loan. The cleanest setup: a non-owner-occupied (landlord) policy in the new owner's name, with the existing lender named as additional insured. Get insurance quotes for landlord coverage at insurancecostcity.com before you close.

Some investors keep the seller's policy in place and add themselves as additional insured. This is technically simpler but can trigger questions from the carrier when the carrier discovers the ownership change.

Ethical Considerations

Subject-to deals can become ethically murky fast. The seller is trusting you to make payments on a loan that remains in their name — for years, possibly decades. If you stop paying, their credit is destroyed. If they cannot prove the property was deeded to you (because the paperwork was sloppy), they may be unable to recover the property.

The ethical floor: be transparent with the seller, document everything, set up auto-pay, send the seller annual statements, and never default. Many states have begun requiring specific disclosures in subject-to deals — check your state's rules before structuring.

Best-practice checklist: Use an attorney. Use a third-party servicer. Use a land trust if available. Maintain insurance properly. Pay on time, every time. Never miss a payment.

The Math vs. New Financing

Why does the rate difference matter so much? Compare a $250,000 loan at 3% vs 7%:

3% rate: monthly P&I = $1,054. Annual interest year one ≈ $7,400.

7% rate: monthly P&I = $1,663. Annual interest year one ≈ $17,300.

Difference: $609 a month, or roughly $7,300 a year of additional cash flow on a single property. Over 10 years, that is $73,000 — a transformational amount on one deal. Run the comparison at mortgagemathlab.com.

This is why subject-to deals are so valuable when you can find them in the post-2020 mortgage environment. Every 3% mortgage you assume locks in years of cash flow advantage versus today's market rates. Run the rental analysis with our cash-on-cash calculator.

Compare a subject-to deal vs new financing →

Common Pitfalls

Failing to verify loan status. Always confirm the loan is current and there are no other liens before closing.

Missing escrow shortages. Property tax and insurance increases create escrow shortages on the seller's loan. Plan for catch-up payments.

Not communicating with the seller. Send the seller annual updates. They are still on the hook for the loan in lender records.

Skipping insurance restructuring. Letting the seller drop the policy without you putting one in place can leave the property uninsured.

Bottom line: Subject-to is a precision tool. It works beautifully in specific situations — motivated sellers with low-rate loans — and it carries real legal and ethical weight. Use an attorney, document everything, and never miss a payment.

Model a subject-to BRRRR →

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