The market for office buildings is undergoing a slow and painful adjustment as a durable shift in how and where people work has left a substantial share of office space emptier than the financing behind it ever anticipated. The reckoning is unfolding gradually, constrained by the illiquid nature of real estate, but its implications reach into the banks that lent against these buildings and the cities whose budgets depend on them.

The shift began with the widespread adoption of remote and hybrid work, which reduced the amount of office space companies need. As leases have come up for renewal, many firms have chosen to occupy less space, consolidate into higher-quality buildings, or relocate, leaving older and less desirable properties struggling to attract tenants. The result is a divergence between premium buildings that retain demand and a larger stock of aging space facing rising vacancy and falling rents.

The financial structure of commercial real estate makes this adjustment particularly fraught. Office buildings are typically purchased with substantial borrowed money, and that debt must eventually be refinanced. When a building’s income falls because tenants have left or rents have dropped, and when the value of the building declines accordingly, refinancing becomes difficult. Lenders may be unwilling to extend new loans on the same terms, and owners can find themselves owing more than the building is worth, facing the choice between injecting more capital or surrendering the property.

The repricing is slow because real estate does not trade like stocks. There is no continuous market price for an individual building, and owners are reluctant to sell at a loss while they hope conditions improve. Transactions that would establish new, lower values happen infrequently, which means the full extent of the decline reveals itself only gradually, often when a loan comes due and the gap between expectation and reality can no longer be deferred. This delayed recognition spreads the pain over years rather than concentrating it in a single shock.

The exposure extends to the financial system, particularly to the regional and smaller banks that hold a meaningful share of commercial real estate loans. As buildings lose value and some borrowers default, lenders face losses that can constrain their willingness and ability to extend credit more broadly. The concern is less a single dramatic failure than a slow drag, as institutions absorb losses and pull back, tightening the flow of credit to other parts of the economy.

Cities face their own version of the strain. Office buildings generate property tax revenue and anchor the downtown districts whose restaurants, shops, and services depend on the daily presence of office workers. When buildings empty and lose value, tax revenue falls, and the reduced foot traffic weakens the surrounding commercial ecosystem. The challenge for urban centers is to adapt districts built around a model of work that has partially dissolved.

One response gaining attention is conversion, turning underused office buildings into housing or other uses. The appeal is obvious given housing shortages in many cities, but conversion is technically difficult and expensive, since office buildings are often poorly suited to residential layouts, and the economics work only for certain structures under certain conditions. Conversion will absorb some of the excess but cannot, on its own, resolve the imbalance.

The office glut is likely to remain a defining feature of commercial real estate for years, working its way through leases, loans, and balance sheets at the deliberate pace that property markets impose. How owners, lenders, and cities navigate the adjustment will determine whether it proves a manageable repricing or a more disruptive episode for the broader economy.