Wells Fargo CMBS trust 2015-NXS1 ratings affirmed on five classes as office loan risks persist

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Wells Fargo CMBS ratings affirmed

Highlights

Morningstar DBRS affirmed ratings on five classes of Wells Fargo CMBS 2015-NXS1 with Stable trends, as the wind-down leaves 12 loans totaling $116.7 million.
Office-backed loans comprise about 50.0% of the pool, with 44.6% in special servicing and elevated refinance risk posing material exposure to lower-rated tranches if losses escalate.
The largest specially serviced loan, 760 & 800 Westchester Avenue, represents 18.4% of the pool, with January 2026 appraisal at $101.0 million, 35.0% below issuance, and implied losses of $7.5 million.

Rating action reflects wind-down and loan recoverability

As reported by Morningstar DBRS, the agency confirms credit ratings on Classes D, E, F, X-E, and X-F of Wells Fargo Commercial Mortgage Trust 2015-NXS1. Class D remains at BBB (low) (sf), Class E at BB (low) (sf), Class F at CCC (sf), Class X-E at BB (sf), and Class X-F at CCC (sf), with Stable trends on Classes D, E, and X-E.

The agency says the confirmations reflect its recoverability expectations for a transaction that is now in wind down, with 12 loans left in the pool. Four of those remaining loans, accounting for about half of the pool balance, are backed by office properties, and three of them, representing nearly 45.0% of the pool, are already in special servicing.

Morningstar DBRS also says several other loans show elevated refinance risk and value deficiency. Its analysis indicates losses would materially erode the unrated Class G certificate, leaving Class F exposed if specially serviced assets weaken further or if refinance-challenged loans fail to repay as expected.

Office concentration and specially serviced loans drive risk outlook

As of the April 2026 remittance, 12 of the original 56 loans remain, with a trust balance of $116.7 million, down 87.8% from issuance. Three loans, equal to 44.6% of the pool, are in special servicing, including the largest loan at 27.6% of the pool, which is still performing under a forbearance agreement, while the other two are nonperforming matured loans.

Since the prior rating action in June 2025, five loans have repaid without adding losses to the trust. That includes three previously specially serviced loans that had accounted for about $8.0 million of Morningstar DBRS' liquidated losses in the prior review, but later repaid in full after loan modifications and maturity extensions.

Eight of the nine loans outside special servicing, or 49.3% of the pool, are on the servicer's watchlist. Seven are Walgreens-backed loans being monitored because they are past their anticipated repayment date, though they do not mature finally until 2035, while another watchlisted asset, the 100 West 57th Street loan in Manhattan, is also past its anticipated repayment date and matures in April 2035.

For its review, Morningstar DBRS applies liquidation haircuts of 20.0% to 25.0% to the latest appraised values of the three specially serviced loans, producing implied cumulative losses of about $15.2 million. In a separate conservative scenario using a 50.0% haircut to issuance appraisals for loans with elevated refinance risk, the agency says value deficiency remains contained to the unrated Class G certificate.

The largest specially serviced asset, 760 & 800 Westchester Avenue in Rye Brook, New York, accounts for 18.4% of the pool and is backed by two Class A office buildings. The loan transferred to special servicing in April 2024 for imminent monetary default, but was later modified with a two-year forbearance through November 2026 and an additional 12-month extension option if a 7% debt yield is reached.

Occupancy at the property stands at 80.2% in the January 2026 appraisal, little changed from 80.9% in December 2024 but below the 90.0% level at issuance. Morningstar DBRS notes that leases covering about 20.4% of net rentable area expire by the end of 2027, while weak local office conditions, including a 26.5% vacancy rate in the Harrison/Rye/East submarket in the Q4 2025 Reis, Inc. report, add to rollover risk.

As of September 2025 servicer reporting, the asset generates annualized net cash flow of $4.8 million and a debt service coverage ratio of 1.09x, down from $8.0 million and 1.79x at year-end 2024. The January 2026 appraisal values the property at $101.0 million, above the December 2024 valuation of $99.0 million but still nearly 35.0% below the $151.0 million issuance value, and Morningstar DBRS says its 20.0% haircut implies losses of $7.5 million, with loss severity of 18.0%.

Our earlier coverage of the SoFi Consumer Loan Program 2026-2 Trust explained how the consumer ABS deal was brought to market backed by a static pool of unsecured, fixed-rate loans originated by SoFi Bank. We outlined the key rating drivers, including the pool’s borrower credit profile, the rating agency’s base-case default expectations, and the levels of hard credit enhancement supporting each note class.

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