CRE 101 · deweyluong.realtor

CMBS Loans Explained: How Conduit Financing Sizes, Prices, and Locks a Commercial Loan

A CMBS loan is a commercial mortgage made to be sold. A conduit lender originates it, pools it with dozens of other loans, and sells the pool as bonds to investors — which is why it can offer a non-recourse, fixed-rate, ten-year loan on terms a local bank will not match, and why it cannot bend once the loan is inside the pool. On the made-up example on this page, a $6,000,000 retail center borrows $3,900,000 through a conduit — $300,000 more than the bank offered — after learning that the loan is underwritten to the amortizing payment of about $27,564 a month, not the $22,750 interest-only payment the borrower actually writes for the first three years. By Túy “Dewey” Luong, CCIM — Founding Broker, SERHANT. Atlanta · 318 closed sales / $281.2M career volume · 678-707-2498

The worked example uses made-up, rounded numbers to teach the mechanics. Real conduit loans are underwritten by CMBS lenders and rating agencies off appraisals, rent rolls, and third-party reports, priced off Treasury rates plus a spread that moves with the bond market, and documented under pooling and servicing agreements that vary by program. This page is general education, not legal, lending, or tax advice.

What a CMBS loan actually is

• The loan is made to be sold, not held: the conduit lender is a bridge between the borrower and the bond market. After closing, the loan is pooled with other loans, the pool is tranched into bonds, and investors — pension funds, insurers, money managers — own the risk. The borrower's day-to-day counterparty becomes a loan servicer administering a contract, not a banker managing a relationship.
• Non-recourse, with bad-boy carve-outs: if the property fails, the lender's remedy is the property. The sponsor signs no general personal guarantee — but carve-out guarantees make the sponsor personally liable for fraud, environmental contamination, unauthorized transfers, misapplied rents or insurance proceeds, and a voluntary bankruptcy filing. Non-recourse means protection from a bad market, not from bad behavior.
• The underwriting is property-first: conduit desks and the rating agencies behind them size the loan off the property's own numbers — coverage, debt yield, and loan-to-value against an appraisal, a rent roll, and third-party reports. A strong stabilized property with a thin sponsor can get done; a strong sponsor cannot rescue a property whose leases do not cover the payment. The trade for that indifference is documentation rigidity: everything is verified, standardized, and slow.
• Fixed rate, long term, partial interest-only: five-, seven-, and ten-year fixed terms with 25- to 30-year amortization are standard, and interest-only periods — sometimes full-term — are common. The rate is priced as a spread over the matching Treasury at lock, so the bond market, not a local credit committee, sets the borrower's coupon on lock day.
• The flexibility is gone once the pool closes: a securitized loan is governed by its pooling and servicing agreement and by REMIC tax rules that sharply limit what can change. There is generally no modification, no partial release of an outparcel, no additional mezzanine or secondary debt, and no assumption without servicer and sometimes rating-agency process. And there is no ordinary payoff: early exit runs through defeasance, exactly as the prepayment lesson describes — the borrower substitutes Treasury securities for the property as collateral rather than retiring the loan.
• Size and asset screens apply: conduit programs typically start at $2 million to $3 million per loan and want stabilized retail, office, industrial, multifamily, and hotel assets in primary and secondary markets. Transitional properties, single-purpose assets, and tenancy that depends on one shaky lease get screened out before pricing ever starts.

Worked example: one retail center, two offers (made-up numbers, labeled as such)

• The setup: a stabilized neighborhood retail center in Gwinnett priced at $6,000,000 with NOI of $420,000 — a 7.0% cap rate. The owner wants long-term fixed debt and no personal liability beyond the standard carve-outs.
• The CMBS offer: 65% of value is a $3,900,000 loan, fixed at a made-up 7.0%, ten-year term, 25-year amortization, with the first three years interest-only. Equity required from the buyer or owner: $2,100,000.
• The interest-only years: the IO payment is $22,750 a month — $273,000 a year. Against NOI of $420,000, that is a comfortable 1.54x coverage ratio, and cash flow after debt service runs $147,000 a year. It is also not the payment the loan was underwritten to.
• The underwriting reality: conduit underwriters test the loan at its amortizing payment. Spread over a 25-year schedule, $3,900,000 at 7.0% costs about $27,564 a month — $330,773 a year — for a coverage ratio of 1.27x. That amortizing number, not the IO number, is what sizes the loan, alongside a debt yield of 10.8% ($420,000 of NOI on $3,900,000 of debt). Borrowers who shop the IO payment are reading the wrong line of their own term sheet.
• The bank comparison: the local bank's offer was 60% of value — a $3,600,000 loan — on a five-year term, recourse to the sponsor. The conduit delivers $300,000 more in proceeds, a rate locked for ten years instead of a reset at year five, and non-recourse terms; in exchange it demands $2,100,000 of equity instead of $2,400,000 today — and gives up every form of flexibility the bank would have negotiated over coffee. Which offer wins depends on the hold plan, which is the subject of the last section.
• The balloon nobody should be surprised by: seven amortizing years (months 37 through 120) pay down only about $519,949 of principal — 13.3% of the loan. At maturity the borrower still owes about $3,380,051, roughly 86.7% of the original balance. Like every balloon, the CMBS maturity is a refinancing or sale event that belongs on the calendar from day one; the difference is that in years one through nine, defeasance pricing decides whether an early exit is even rational.
• The servicing reality: the borrower reports financials annually, escrows taxes, insurance, and often replacement reserves and tenant-improvement reserves, and answers to a master servicer that has no authority to improvise. If the loan ever transfers to a special servicer, that servicer's duty runs to the bondholders across the whole pool — not to this borrower. The low rate is the price of being a well-documented line item in someone else's bond.

When it works — and where it breaks

• Best fits: stabilized assets held for the full term; owners who value rate certainty and non-recourse over flexibility; loans at or above conduit minimums where the bank market is thin; and situations where the property's file is stronger than the sponsor's — the mirror image of the capital stack conversation, where the debt is sized to the asset alone.
• It breaks when the business plan moves: a value-add plan that sells in year four, splits an outparcel in year six, or needs a cash-out refinance mid-term collides with defeasance math and a servicer that cannot say yes. CMBS is financing for a finished plan, not a developing one.
• It breaks on the asset screens: transitional occupancy, short weighted-average lease terms, special-purpose improvements, and loans below program minimums never reach pricing. The conduit's indifference to the sponsor cuts both ways — there is no relationship to appeal to when the tape says no.
• Defeasance is the exit toll: leaving early means buying a portfolio of Treasury securities that replicates the remaining payments, and its cost rises as rates fall. In a falling-rate market the toll can exceed the entire benefit of refinancing; in a rising-rate market it can be surprisingly cheap. Either way it is priced by the bond market at exit, not negotiated at the closing table.
• The maturity discipline still applies: roughly 86.7% of this loan is still outstanding at year ten. An owner who treats the IO years' $147,000 of cash flow as permanent income, rather than the amortizing years' roughly $89,227 as the real run rate, is underwriting their own surprise at the balloon.

Cho nhà đầu tư người Việt

CMBS loan (khoản vay conduit) là khoản vay thương mại được tạo ra để bán lại thành trái phiếu. Ngân hàng conduit cho vay, gom hàng chục khoản vay thành một gói, phát hành trái phiếu bán cho nhà đầu tư tổ chức — vì vậy khoản vay thường không truy đòi cá nhân người vay (non-recourse), lãi suất cố định tới 10 năm, nhưng gần như không thể sửa đổi sau khi đã vào gói. Ví dụ giả định trên trang này: một trung tâm bán lẻ ở Gwinnett giá $6.000.000, NOI $420.000. Khoản vay CMBS là $3.900.000 (65% giá trị), lãi suất cố định 7,0%, kỳ hạn 10 năm, trả góp theo lịch 25 năm, ba năm đầu chỉ trả lãi: $22.750 mỗi tháng, DSCR trông rất đẹp ở mức 1,54 lần. Nhưng ngân hàng thẩm định theo khoản trả đủ gốc lẫn lãi — khoảng $27.564 mỗi tháng — nên DSCR thật là 1,27 lần, và debt yield 10,8%. Sau 10 năm, dư nợ vẫn còn khoảng $3.380.051, tức 86,7% khoản vay ban đầu: ngày đáo hạn là một sự kiện phải tái cấp vốn hoặc bán, phải lên lịch từ ngày đầu. Muốn thoát sớm gần như không trả dứt được khoản vay — phải dùng defeasance, thay tài sản bảo đảm bằng trái phiếu kho bạc. Đổi lại, ngân hàng địa phương chỉ cho vay $3.600.000 (60%), kỳ hạn 5 năm và đòi truy đòi cá nhân; CMBS cho nhiều hơn $300.000, khóa lãi 10 năm và không truy đòi — với cái giá là mất toàn bộ sự linh hoạt. Đây là thông tin giáo dục chung, không phải tư vấn cho vay hay pháp lý — hãy làm việc với luật sư và chuyên gia tài chính của bạn trước khi ký.

Frequently asked questions

What is a CMBS loan in commercial real estate?

A CMBS (commercial mortgage-backed securities) loan, also called a conduit loan, is a fixed-rate commercial mortgage originated to be pooled with other loans and sold as bonds to investors. It is typically non-recourse, carries a five-, seven-, or ten-year term with 25- to 30-year amortization and often an interest-only period, and is administered by a servicer under a pooling and servicing agreement rather than by the originating lender. On this page's made-up example, a $6,000,000 retail center borrows $3,900,000 at 65% loan-to-value on a ten-year term.

How is a CMBS loan sized?

By the property's numbers, tested at the amortizing payment even when the loan has an interest-only period. On the worked example, 65% loan-to-value produces $3,900,000; coverage at the amortizing payment of about $27,564 a month is 1.27x against NOI of $420,000; and the debt yield is 10.8%. The interest-only payment of $22,750 a month shows 1.54x coverage, but no conduit underwriter sizes to it — the lowest comfortable test wins, and sponsor strength rarely moves the number.

Can you pay off or refinance a CMBS loan early?

Generally not by simply paying it off. After an initial lockout period, the standard exit is defeasance: the borrower purchases Treasury securities that replicate the remaining loan payments, those securities replace the property as the bondholders' collateral, and the property is released. The cost is set by Treasury prices at the time of exit — expensive when rates have fallen, cheap when they have risen — so a CMBS loan should be underwritten as a hold to maturity, with the roughly 86.7% balloon at year ten planned from closing.

What are the risks of a CMBS loan?

Rigidity is the core risk: once securitized, the loan cannot be modified, partially released, or layered with new debt through any ordinary negotiation, and a default sends it to a special servicer whose duty runs to the bondholders, not the borrower. The documentation burden is heavier — annual financials, escrows and reserves, third-party reports — and the exit before maturity runs through defeasance at market prices. The product rewards a stabilized property and a finished plan; it punishes a business plan that still needs to move.

CMBS loan (khoản vay conduit) là gì?

Là khoản vay thế chấp thương mại lãi suất cố định, được ngân hàng conduit tạo ra để gom cùng nhiều khoản vay khác và bán thành trái phiếu cho nhà đầu tư tổ chức. Khoản vay thường không truy đòi cá nhân (trừ các trường hợp "bad boy" như gian lận hay phá sản tự nguyện), kỳ hạn 5, 7 hoặc 10 năm, trả góp theo lịch 25–30 năm, thường có giai đoạn chỉ trả lãi. Sau khi vào gói trái phiếu, khoản vay gần như không sửa đổi được và muốn thoát sớm phải dùng defeasance thay vì trả dứt. Trong ví dụ của trang này, trung tâm bán lẻ $6.000.000 vay $3.900.000, bị thẩm định ở DSCR 1,27 lần theo khoản trả đủ gốc và lãi khoảng $27.564 mỗi tháng, và đến năm thứ 10 vẫn còn nợ khoảng $3.380.051. Đây là thông tin giáo dục chung, không phải tư vấn cho vay hay pháp lý.

Wondering whether a conduit loan beats your bank's term sheet on a stabilized Georgia asset — or what the defeasance toll would look like on an existing CMBS loan? Call Túy “Dewey” Luong, CCIM at 678-707-2498 or see SERHANT. Atlanta.