Your balloon payment is 14 months out. The building’s net operating income has climbed 22% since you bought it, but the bank that funded you in 2016 has been swallowed by a larger institution, and the new servicer keeps losing your paperwork. You’re ready to explore a commercial property refinance, except the last time you refinanced anything, it was your house, and the rules are completely different.
Commercial loans are underwritten on the property’s ability to pay, not your personal tax returns. That single shift changes everything: the lender, the timeline, the paperwork, and the exit strategy. Here’s what actually matters when you refinance a commercial building.
How commercial lenders see your building
Residential lenders ask: can this borrower pay? Commercial lenders ask: can this property pay? The primary metric is the debt service coverage ratio (DSCR). It’s net operating income divided by annual loan payments. Most banks want a DSCR of at least 1.25. Life insurance companies often want 1.35 or higher. If your property throws off $150,000 in NOI and the new loan would require $120,000 in annual payments, your DSCR is 1.25—right at the edge.
Loan-to-value (LTV) is the second gate. Banks typically cap commercial loans at 65% to 75% of appraised value. Life companies go lower, sometimes 55% to 65%. Debt funds will stretch to 80% but charge for it. A third metric, debt yield, has become popular since 2020: NOI divided by loan amount. Lenders often want a minimum 10% debt yield. On that same $150,000 NOI, a $1.5 million loan gives you a 10% debt yield. A $1.8 million loan drops it to 8.3%—likely a decline.
If you own a 12-unit apartment building, the playbook is similar to a multi-family property refinance, but the lender’s appetite shifts with unit count and property condition. A 40-year-old strip center with three vacancies? Different conversation entirely.
When a commercial property refinance is worth the trouble
Refinancing isn’t free. Appraisals run $3,000 to $8,000 for a commercial property, environmental Phase I reports cost $1,500 to $3,000, and lender fees can hit 1% of the loan. So the math has to work. Here are the situations where it usually does:
- Lowering your rate by at least 0.75%. If you’re paying 6.5% and can lock 5.25%, the savings pile up fast on a $2 million loan, roughly $25,000 a year.
- Extending your amortization. Moving from a 20-year schedule to 25 or 30 years cuts your monthly payment even if the rate stays the same.
- Pulling cash out for improvements. A new roof, parking lot, or tenant build-out can raise NOI enough to justify the larger loan.
- Escaping a maturity default. If your loan is maturing and the lender won’t extend, a refinance is your exit.
- Buying out a partner. A cash-out refinance can fund a buyout without selling the asset.
Landlords often assume a refinance is just a rate swap, but non-owner-occupied property refinance comes with stricter reserve requirements and tougher credit standards than most people expect. The lender will want to see six months of principal, interest, taxes, and insurance in reserves—sometimes twelve.
The numbers that decide your loan amount
Let’s work through a real example. You own a small retail strip center. The property generates $185,000 in net operating income. You bought it four years ago for $2.1 million with a $1.4 million loan at 5.5%. The loan has two years left on a 20-year amortization schedule. You want to refinance into a 10-year fixed loan at 4.75% with a 25-year amortization.
The new appraisal comes in at $2.3 million. At 70% LTV, the maximum loan is $1.61 million. Your DSCR on that loan? The annual payment at 4.75% over 25 years is about $110,100. Divide $185,000 by $110,100 and you get a DSCR of 1.68. That’s comfortably above the 1.25 minimum, so the lender approves the full $1.61 million.
You pay off the old $1.4 million balance and walk away with roughly $210,000 in cash—before closing costs. Your new payment is actually lower than your old one: about $9,180 a month versus $9,630. Same property, lower rate, longer amortization, and you pocket six figures for renovations. That’s a refinance that earns its keep.
What the process actually involves
Commercial refinances take 45 to 90 days. Sometimes longer. Here’s the sequence:
- Application and term sheet. You’ll submit rent rolls, trailing 12-month operating statements, tax returns, and a personal financial statement. The lender issues a term sheet with rate, fees, and conditions.
- Third-party reports. Appraisal, environmental Phase I, and sometimes a property condition report. These alone can take three to four weeks.
- Loan committee. The lender reviews everything and issues a commitment letter. This is where deals die if the DSCR or LTV doesn’t hold up.
- Closing. Title, survey, insurance, and legal review. Expect to sign a personal guarantee unless you’re using a non-recourse lender.
The prepayment trap
One trap catches more borrowers than any other: the prepayment penalty on your existing loan. Many commercial loans have defeasance or yield maintenance clauses. Defeasance can cost more than the interest you’d save by refinancing. Before you go any further, pull your loan documents and read the prepayment section. If you have a defeasance clause, ask your servicer for a payoff quote—it’s not just the balance.
Choosing the right lender for your refinance
Not all commercial lenders are the same. A bank that holds loans on its balance sheet will care about your deposit relationship and might offer a lower rate. A life insurance company will offer 20-year fixed terms but demand a 1.35 DSCR and 60% LTV. CMBS lenders are non-recourse but slow and rigid. Debt funds close in two weeks but charge 9% to 12%.
If you’re refinancing a commercial condo, the building’s financials become part of your loan application. Lenders will review the HOA’s budget, reserves, and litigation history—much like a condo mortgage refinance where the building gets a vote on your loan. A condo building with 40% commercial occupancy can be a red flag for some lenders.
For most borrowers, a commercial mortgage broker is worth the fee. They know which lenders are hungry for your property type and can save you weeks of dead-end applications. If you’re on the fence about whether the refi is worth it, this breakdown of when a rental refi is actually worth it walks through the break-even math.
Mistakes that sink a commercial refinance
Even good properties get turned down. Usually it’s one of these:
- Understating vacancy. Lenders use market vacancy rates, not just your current rent roll. If you’re 95% occupied but the submarket runs 85%, the underwriter will apply a vacancy factor.
- Ignoring deferred maintenance. A property condition report that flags a failing HVAC system can kill the loan or force a repair escrow.
- Forgetting reserves. Lenders will escrow for taxes, insurance, and sometimes replacements. That’s money you don’t get at closing.
- Using a residential broker. Commercial loans require commercial expertise. A residential realtor friend cannot help you here.
- Waiting until the last minute. If your loan matures in six months, you’re already late. Start the process 9 to 12 months before maturity.
The cost of waiting on a commercial property refinance
Rates move. Property values move. Lender appetites move. The strip center example above works beautifully today—but if NOI drops 10% next year, that 1.68 DSCR becomes 1.51, and the loan amount shrinks. If the appraisal comes in lower because a big-box tenant vacates, your LTV balloons and the refinance might not happen at all.
The best time to refinance is when you don’t need to. If your loan matures in two years, start talking to lenders now. Get a term sheet. Run the numbers with a commercial mortgage broker who knows your market. The process is slower and more document-heavy than a residential refinance, but the payoff—lower payments, cash for improvements, a clean exit from a maturing loan—can be substantial. Just don’t wait until the balloon is staring you down.