For the past two years, the office market narrative has mostly been about occupiers: return-to-office mandates, flex take-up, the slow drift back into city centres. This week, the story shifted to the other side of the balance sheet. The bond market just delivered a reminder that offices aren’t just buildings people work in. They’re assets financed with debt, and that debt just got a lot more expensive.
On Wednesday, the 10-year US Treasury yield, the benchmark that underpins most commercial mortgage pricing, hit 5.3%, its highest level since 2002, capping its biggest quarterly jump since 1994. Speaking at Bisnow’s National Commercial Real Estate Finance Event in New York, lenders and investors didn’t mince words: deals that made sense a month ago may no longer work at today’s rates, and the “extend-and-pretend” strategy that’s kept many distressed office loans alive since the pandemic may finally be running out of road.
The number landlords can’t ignore
The 10-year Treasury yield sat below 4% as recently as late February. It climbed past 4.5% in May, cleared the psychologically important 5% mark ahead of the Federal Reserve’s September meeting, and has kept pushing higher since, driven by a mix of inflation worries tied to rising oil prices and an ongoing trade war, a resilient labour market that’s kept the Fed cautious about cutting rates, and a US national debt that crossed $40 trillion in August, adding fresh pressure on long-term yields.
For office landlords, that matters enormously. Nearly every commercial mortgage, loan extension and refinancing is priced off this benchmark. When it jumps 75 basis points in a matter of weeks, as one lender at the Bisnow event put it, it puts a chill on the entire market: borrowers pause, lenders tighten underwriting, and appraisals that haven’t yet caught up to the new reality start to look increasingly optimistic.
No more kicking the can
Since 2020, many office owners holding underwater or marginal assets have leaned on loan extensions rather than refinancing or selling at a loss, a pattern the industry has nicknamed “extend-and-pretend.” Lenders at the Bisnow event suggested that patience is wearing thin. Banks are increasingly asking borrowers to inject fresh equity in exchange for modifications, while private credit funds, which have been stepping into gaps left by traditional lenders, are taking on more distressed office debt, and in some cases, the properties themselves.
There’s also a telling shift in borrower behaviour. When private credit firms recently warned clients that rates were about to rise further, some owners who had been sitting on extensions suddenly moved to pay off their loans rather than risk refinancing into an even higher-rate environment later. That’s a sign that even cautious owners are starting to treat today’s rates as the new normal rather than a temporary spike to wait out.
Someone’s pain, someone’s bargain
Perhaps the most consequential part of this story for the office sector is valuation. Panelists at the Bisnow event agreed that appraisals have not yet fully absorbed the impact of higher borrowing costs, and that property values are likely to drop further as lenders apply more conservative underwriting and require lower leverage. For owners who bought or refinanced at the top of the market, that’s a genuinely difficult position: the longer elevated rates persist, the greater the risk of forced sales.
But a reset in asset values isn’t purely bad news for the market. Well-capitalized investors, those with cash on hand and no urgent refinancing deadline, are being handed a rare opportunity to acquire office assets at a meaningfully lower basis than they could have a year or two ago. Several lenders framed this as a healthy, if painful, correction: a market that has been propped up by extensions and optimism finally resetting around real, sustainable pricing.
Where flex operators come in
For flexible workspace operators, this kind of dislocation has historically been fertile ground. Distressed office buildings changing hands at lower valuations tend to attract new owners, often private equity or credit funds, who are more open to repositioning space, including carving out floors for managed offices or coworking operators, rather than holding out for pre-pandemic rents. Europe has already offered a preview of this dynamic this autumn, with buyers moving quickly to anchor underused office floors with flexible workspace brands at a fraction of previous valuations.
Operators eyeing expansion should watch which assets change hands over the coming months rather than which ones are formally marketed: distressed sales often move through private channels well before they hit the open market. For landlords with performing buildings, the message is equally clear: lenders will reward well-let, well-managed assets with occupancy diversity, and flexible space is increasingly part of that story rather than a side bet.
What happens next
A quarter-point move in a government bond yield can feel abstract until it shows up in a refinancing quote or a stalled deal. This week’s jump to a 24-year high is a reminder that the office market’s recovery was never just about return-to-office policies. It’s also a function of what debt costs. For owners with loans maturing in the next 12 to 18 months, now is the moment to model refinancing scenarios at today’s rates, not last year’s. For investors and flex operators with dry powder, it may be the moment the market has been waiting for.
