How a CMBS loan is put together
A bank that keeps a loan on its own books can renegotiate it later, because it still owns the risk. A CMBS lender cannot, because it never intended to own the loan for long. Within weeks of closing, your mortgage is pooled with dozens or hundreds of other commercial mortgages, and that pool is sliced into bond classes sold to investors such as pension funds, insurance companies, and debt funds. The classes are ranked: the safest is paid first, the riskiest absorbs the first losses.
Those investors buy on the strength of the loan documents. That is why CMBS terms are standardized and effectively frozen at closing. Changing your loan would change the bond someone else already bought. It is also why underwriting leans so heavily on the property rather than on you. Sponsor experience matters, but the central question is whether the building can carry the debt by itself, usually tested through debt yield and debt service coverage.
After closing, administration passes to a master servicer, which collects payments and handles routine requests strictly within what the documents allow. If the loan runs into trouble, or you need something the documents do not cover, it transfers to a special servicer, which has authority to negotiate but charges fees for doing so. Neither one is the lender you sat across from at closing.
Worked example
A stabilized neighborhood retail center is priced at $12,300,000 and produces $860,000 of net operating income, a cap rate of roughly 7.0%. The sponsor has two quotes:
- CMBS quote — $8,000,000 (65% loan-to-value), 6.35% fixed for 10 years, 30-year amortization, non-recourse
- Bank quote — $8,000,000, 6.90% fixed for 5 years, full recourse, annual financial covenants
- Debt yield either way — $860,000 divided by $8,000,000 = 10.75%
The rate gap is 0.55%, about $44,000 a year on an $8,000,000 balance, or roughly $440,000 across ten years, before counting five extra years of rate certainty and the removal of a personal guarantee. On paper the CMBS loan wins clearly, and for a buy-and-hold owner it usually does.
Now move to year four. The anchor tenant wants to expand, which requires releasing a small outparcel from the mortgage. The sponsor picks up the phone to call the lender, and there is no lender to call. The request goes to the master servicer, who checks whether the documents permit a partial release. If they do not, the answer is no, and no relationship changes it. Paying the loan off instead triggers defeasance, which in most conduit loans is the only prepayment route until an open window near maturity.
What it means for you
A CMBS loan is an excellent trade when your plan is to hold a stabilized property and do nothing unusual for ten years. You get a lower fixed rate, higher proceeds than most banks will offer, a long fixed term, and non-recourse treatment subject to bad boy carve-outs.
If your plan involves selling in year three, bringing in a partner, refinancing when rates fall, or borrowing against improved value, this is the wrong instrument. Every one of those moves collides with a document written for bond investors, not for you. The honest test before you sign: write down everything you might plausibly want to do with the property over the next decade, then ask your broker to point at the clause that permits each one. If it is not written down, assume it is not allowed. Our CMBS loan page walks through the full process, and if you start an application we will price a conduit quote against balance-sheet and agency alternatives side by side rather than in isolation.
What to watch for
- Prepayment is usually defeasance, not a fee. Instead of writing a check, you buy a portfolio of government securities to replace your loan's cash flow. It involves accountants, attorneys, and a defeasance consultant, and the cost swings with interest rates.
- Reserves are funded and non-negotiable. Expect upfront and monthly escrows for taxes, insurance, replacement reserves, and often tenant improvements and leasing commissions. Model them as real cash flow, because they reduce what reaches your account every month.
- You will form a single-purpose entity. The property must sit in a bankruptcy-remote entity that owns nothing else, often with an independent director. Violating those covenants is one of the fastest ways to lose non-recourse protection.
- Assumption is possible but slow. Selling with the loan in place typically requires servicer and rating agency review, an assumption fee commonly around 1% of the balance, and a timeline measured in months. Build it into the purchase and sale agreement, not into escrow.
- Rate is locked late. Conduit pricing is tied to spreads over Treasuries or swaps and is often not locked until shortly before closing. Ask exactly when the rate locks and what happens if spreads widen in between.
What is the minimum loan amount for a CMBS loan?
Conduit lenders typically focus on loans of about $5,000,000 and up, though some programs go down to roughly $2,000,000. Below that range the fixed transaction costs of securitization rarely make sense, and a bank, credit union, or agency lender is usually a better fit.
Are CMBS loans non-recourse?
Yes, in nearly all cases, but non-recourse is conditional. Standard bad boy carve-outs make you or your guarantor personally liable for specific acts such as fraud, misapplying rents, placing unauthorized liens on the property, transferring it without consent, or filing a voluntary bankruptcy. Read the carve-out guaranty as carefully as the note.
Can you pay off a CMBS loan early?
Rarely without cost. Most conduit loans prohibit ordinary prepayment for the bulk of the term and require defeasance instead, with some loans using yield maintenance. Nearly all include an open period, commonly the last three to six months before maturity, when you can pay off with no penalty. If an early exit is realistic, that constraint usually outweighs the rate advantage.
