The $17 Billion Maturity Wall

We've been tracking a maturity wall that almost no one is talking about: 904 office loans totaling $17 billion sitting on insurance company balance sheets, all maturing in 2026. Unlike CMBS maturities — which generate monthly remittance reports and special servicing headlines — insurance company loan resolutions happen bilaterally and almost never make the news. So we went looking for them.

The Wall

Insurance companies — life insurers primarily — built massive office loan portfolios during the low-rate years of 2014-2017. Those 10-year fixed-rate mortgages are now coming due, and they're coming due at scale. 2025 and 2026 represent the peak of this maturity cycle, with volumes declining sharply afterward.

The Rate Shock

The $4.1 billion in loans originated in 2016 tells the story most clearly. These were 10-year fixed-rate mortgages underwritten at a weighted average rate of 3.83%. As of Q3 2025, life insurers were originating new office loans at 6.97%. That is an 82% increase in borrowing cost. On a $100 million loan, the annual debt service jump is $3.14 million — and for most office buildings in 2026, the income hasn't grown enough to absorb that.

The chart below breaks down the $17 billion in 2026 maturities by origination year. The 2016 vintage dominates. But the 2021-2023 cohort — shorter-duration transitional loans — represents a different kind of problem: these were originated at higher rates but underwritten against property values that have since deteriorated significantly.

What It Looks Like at the Property Level: Safeco Plaza, Seattle

To understand what this maturity wall means in practice, we focused on one loan: ~$250 million on Safeco Plaza, a 50-story tower in downtown Seattle acquired for approximately $465 million in 2021. The loan matures September 2026.

No single source tells this story. But by weaving together regulatory filings, SEC disclosures, county records, and earnings transcripts, the picture comes into focus.

The lender's regulatory filings show $245.5 million in senior debt, floating-rate, originated in 2021. The borrower's 10-K — filed just two weeks ago — discloses a current interest rate of 4.82%, which corresponds to what we see on the insurance filings after adjusting for the Fed's rate cuts (the loan is SOFR-based). The 10-K also reveals 79.1% occupancy, $49.77/SF rents, and critically, negative equity in the investment. The borrower's own books show the debt exceeds the value.

On BXP's Q4 2025 earnings call, EVP Rodney Diehl addressed the Seattle CBD portfolio directly: "We have our 2 assets in the CBD. And we've actually had really good demand from some of our in-place tenants that have expressed some growth needs. So we're accommodating that." He added that Seattle has historically lagged San Francisco by 12 to 18 months, and he expects "continued demand — increasing demand" in 2026. But Safeco Plaza is one of just two BXP buildings in the Seattle CBD, and together they represent less than 2% of the company's total income. It's not a make-or-break position — which tells you something about whether fresh capital is coming at maturity.

Then there's the anchor tenant: 37% of the tower, and they're retiring their brand in 2026. Downtown Seattle CBD vacancy sits at 35.6% and climbing. At current occupancy, the property is worth roughly $224.5 million against ~$250 million in debt — underwater by about $25 million. Refinancing will require an equity injection, a discounted payoff, or an extension.

The Bigger Picture

Safeco Plaza is one loan out of 904. The pattern — decade-old underwriting colliding with a 7% rate environment, 30%+ vacancy, and values down 25-50% — plays out across the entire $17 billion wall. Some will resolve cleanly. In Los Angeles, Kilroy Realty paid off a $144.8 million loan on its Westside Media Center campus 18 months before maturity — a public REIT retiring the mortgage on its own headquarters. In San Francisco, Shorenstein Properties refinanced $207.9 million on 50 California Street just eight days before the January 2026 maturity, with Brookfield's insurance capital platform stepping in where the original life insurer stepped back. But for properties where the borrower discloses negative equity, the anchor tenant is leaving, and the market has 35% vacancy — the math is the math.

Every new data source — county records, mREIT filings, insurance company filings — weaves another thread into the tapestry. No single filing tells you Safeco Plaza is underwater with a departing anchor tenant in a 35% vacancy market. You need all of them.