The quick read: Trepp's September 2026 report, posted October 2, puts the overall CMBS delinquency rate at 8.02%, up 17 basis points from August's 7.85% and its highest level since November 2020. Multifamily rose 35 basis points to 8.04%, office 16 basis points to 12.16% and lodging 34 basis points to 6.18%, while retail fell 62 basis points to 6.58% and industrial held at 1.14%. Trepp's separate special servicing rate rose seven basis points to 11.49% in September, its highest since February 2013. For a borrower, the reading means conduit lenders and bond investors are looking at more distress, especially in multifamily and office, and a CMBS loan maturing in 2026 or 2027 should have its extension, refinance and payoff paths priced now, not in the final 90 days.
What was the CMBS delinquency rate in September 2026?
The Trepp CMBS delinquency rate was 8.02% in September 2026, up 17 basis points from 7.85% in August, according to Trepp's monthly report posted October 2, 2026. Trepp says that is the highest level since November 2020 and that five large single-asset, single-borrower loans drove much of the increase.
Every figure in this article comes from Trepp, which publishes the monthly series, and each carries its month. The definition matters before the numbers do. Trepp's guide to the report says the headline rate counts loans that are 30, 60 or 90 days delinquent, plus non-performing matured balloon loans, loans in foreclosure and real estate owned (REO). It does not count a loan that missed its balloon payment but is still current on interest, which Trepp calls a performing matured balloon. The rate is the delinquent balance divided by total balance outstanding, with defeased loans kept in the denominator.
Overall CMBS delinquency rate, September 2026 (Trepp, posted Oct 2, 2026): 8.02% Overall CMBS delinquency rate, August 2026 (Trepp, posted Sept 1, 2026): 7.85% Month-over-month change, September 2026 (Trepp): up 17 basis points CMBS special servicing rate, September 2026 (Trepp, posted Oct 13, 2026): 11.49%, up seven basis points
The special servicing rate is a different measure. It tracks loans that have been transferred to a special servicer, which can happen before a loan is delinquent, for example on an expected maturity default. Do not add the two numbers together or compare them as if they were the same thing.
How did CMBS delinquency change by property type in September 2026?
By property type, Trepp reports that September 2026 delinquency rose in multifamily, lodging and office, held flat in industrial and fell sharply in retail, where mall loans cured. Multifamily's 35 basis point rise came from a broad group of loans moving to 30-day delinquent status across several states.
The table below sets Trepp's September and August delinquency readings side by side, with the September special servicing rate in its own columns because it is a separate measure. All values are as Trepp prints them; the change column is Trepp's stated move for September.
| Property type | Delinquency, Sept 2026 | Delinquency, Aug 2026 | Change, Sept | Special servicing, Sept 2026 | Special servicing change, Sept |
|---|---|---|---|---|---|
| Property type Office | Delinquency, Sept 2026 12.16% | Delinquency, Aug 2026 12.00% | Change, Sept +16 bp | Special servicing, Sept 2026 16.85% | Special servicing change, Sept -5 bp |
| Property type Multifamily | Delinquency, Sept 2026 8.04% | Delinquency, Aug 2026 7.69% | Change, Sept +35 bp | Special servicing, Sept 2026 8.54% | Special servicing change, Sept +17 bp |
| Property type Retail | Delinquency, Sept 2026 6.58% | Delinquency, Aug 2026 7.20% | Change, Sept -62 bp | Special servicing, Sept 2026 13.84% | Special servicing change, Sept +24 bp |
| Property type Lodging | Delinquency, Sept 2026 6.18% | Delinquency, Aug 2026 5.84% | Change, Sept +34 bp | Special servicing, Sept 2026 8.95% | Special servicing change, Sept +21 bp |
| Property type Industrial | Delinquency, Sept 2026 1.14% | Delinquency, Aug 2026 1.14% | Change, Sept unchanged | Special servicing, Sept 2026 1.23% | Special servicing change, Sept -4 bp |
| Property type Overall | Delinquency, Sept 2026 8.02% | Delinquency, Aug 2026 7.85% | Change, Sept +17 bp | Special servicing, Sept 2026 11.49% | Special servicing change, Sept +7 bp |
Source: Trepp, CMBS Delinquency Report excerpts for August 2026 (posted Sept 1, 2026) and September 2026 (posted Oct 2, 2026), and CMBS Special Servicing Report excerpt for September 2026 (posted Oct 13, 2026). Delinquency uses Trepp's 30-plus-day definition including non-performing matured balloons, foreclosure and REO; special servicing counts loans with a special servicer.
Three readings stand out. Office remains the highest delinquency rate of the five major types. Multifamily, a property type many borrowers treat as safe, now has a delinquency rate above the overall rate, and Trepp attributes the rise to many loans rather than a few large ones. Retail's sharp fall came from cures, which shows how a handful of large loans can move a property-type rate in either direction in one month. In special servicing, Trepp says new transfers in September totaled roughly $2.65 billion across 42 whole loans, with office 57% of the total.
Why does a rising CMBS delinquency rate change how conduit loans are underwritten?
A rising CMBS delinquency rate changes conduit underwriting because the bond investors who buy each deal price the loss risk, and loan sizing follows that price: conduit lenders lean harder on debt yield and coverage, ask for more reserves, and size multifamily and office loans more cautiously when those types show rising distress.
A conduit loan is originated to be pooled into a CMBS deal and sold to bond investors. The lender's room to size a loan depends on what those investors will pay for the bonds and what the rating agencies require. When delinquency and special servicing rise, the levers are predictable:
- Debt yield. Net operating income divided by the loan amount. A higher required debt yield cuts proceeds directly, and it ignores the interest rate, so it binds even when a borrower can pay today's coupon.
- DSCR at the actual coupon. Higher Treasury yields raise the fixed coupon, which lowers coverage on the same income.
- Reserves. Lenders can require larger tax, insurance, replacement and leasing reserves, or cash management triggered by a coverage test.
- Property-type appetite. The property types where the table shows rising distress, here multifamily, office and lodging, are where a borrower should expect the closest look at rent rolls, leases and expense trends.
The matured-balloon category is the link to refinancing risk. Almost all CMBS loans are balloon loans, and Trepp's August report described several large loans becoming delinquent after failing to pay off at maturity. A loan that cannot be refinanced at its balance moves into the delinquency count as a non-performing matured balloon if it stops paying, or into special servicing as an imminent maturity default. The sizing article on CMBS LTV, DSCR and debt yield by property type covers the underwriting side in detail.
Why do some CMBS refinances move to bridge lenders and debt funds?
Some CMBS refinances move to bridge lenders and debt funds because a new conduit loan, sized on today's debt yield and coupon, may not cover the old balance, while a floating-rate bridge loan can be sized on a business plan, a lease-up or a value-add story and buy time to stabilize before a permanent takeout.
That flexibility has a cost. Bridge loans usually float over SOFR, require a rate cap and carry higher spreads and fees than a stabilized permanent loan. The minutes of the Federal Reserve's September 15–16, 2026 meeting, posted October 7, record a raise to 3-3/4 to 4 percent and say most participants assessed another increase would likely be appropriate by year end, which raises the carrying cost of the floating route. A bridge refinance works when the plan produces enough income growth to reach a permanent loan; it is a poor fit when the shortfall is permanent and the bridge only delays the same problem.
The lender types and what each usually solves:
- Conduit (CMBS) lenders: fixed-rate, non-recourse, sized on in-place income; best for stabilized assets that clear today's debt yield.
- Banks and credit unions: relationship-driven, often with recourse and shorter terms; appetite varies by region and by property type.
- Agency lenders for multifamily: fixed or floating permanent debt for stabilized apartments that meet their program rules.
- Bridge lenders and debt funds: floating-rate, transitional; useful where the property needs time or capital to stabilize.
- Life companies: low-leverage, high-quality assets; selective.
What are your options if your CMBS loan matures in the next 12 months?
If your CMBS loan matures in the next 12 months, you have three paths: negotiate an extension or modification with the servicer, refinance with a new lender, or pay off through a sale or new equity. Price all three now, because special servicing timelines are long and a missed balloon becomes a delinquency.
Start with the numbers that decide which path is open. Calculate the loan amount a new lender would size today on in-place net operating income at a conservative debt yield and today's coupon, and compare it with your balloon balance. If the new loan covers the balance plus costs, a refinance is the cleanest route. If it falls short, the gap must be filled with equity, mezzanine or preferred equity, or time, which is what an extension or bridge loan buys. The extend-or-refinance guide and the maturity-wall guide walk through each step, and multifamily owners can read the 2026 multifamily refinance guide.
The quickest way to see which path is real is to collect live quotes across lender types at once, and the brokerage route does that first. YieldStack is an AI-native commercial mortgage brokerage that arranges financing for commercial real estate investors. Its software compares the deal against 20,000+ loan programs, and human brokers then structure the request, negotiate for the borrower and carry it toward closing. It costs Zero upfront to submit a deal and review offers; YieldStack's broker fee is 0.50–1.00% of the loan amount and is paid only at closing. The median first offer arrives in under an hour, from an institutional lender. Every credit decision is made by the lender; YieldStack arranges the introductions and negotiates on the borrower's side, and no loan, rate, or closing is guaranteed.
- Brokerage route (YieldStack): one package, quotes from conduit, bank, agency, bridge and debt-fund lender types, compared on one sheet against your balloon balance.
- Direct to the servicer: for an extension or modification; expect fees, a cash sweep or a paydown request.
- Direct to individual lenders: one relationship at a time, with each lender's own package and timeline.
Send the loan documents and maturity date, the current rent roll, trailing twelve-month operating statement, a capital expenditure history and the most recent servicer correspondence. Then submit the deal for review. For background on the product itself, see the CMBS loan page.
The bottom line
Trepp's September 2026 CMBS delinquency rate is 8.02%, up 17 basis points and the highest since November 2020, with multifamily at 8.04% and office at 12.16%, and special servicing at 11.49%. Rising distress tightens conduit sizing, so a borrower with a 2026 or 2027 maturity should size the refinance today and line up extension, bridge and payoff options before the balloon date.