Answer extracted from the The TreppWire Podcast: A Commercial Real Estate Show — listen to the full episode below.
What vacancy rate exists in major life sciences markets?
Life sciences markets are experiencing approximately 30% vacancy in major markets, a dramatic reversal from the post-COVID surge when demand for laboratory space seemed insatiable. This represents a market correction following what has been characterized as a speculative bubble in the sector that has now burst.
The shift reflects broader changes in the commercial real estate landscape. During the pandemic recovery period, life sciences properties were among the most sought-after asset classes, driven by accelerated demand for research and development space. However, as stimulus measures were dialed back and capital conditions tightened, this demand evaporated almost as quickly as it had appeared.
As Stephen Bushbaum explains in the episode, this maturity correction is part of a larger pattern where property fundamentals, capital availability, and credit conditions all synchronize during periods of market stress. The 30% vacancy rate now facing life sciences landlords forces a recalibration of assumptions that were made during the peak of the sector's popularity.
"Maturity is the great synchronization event that forces all of these clocks to come into sync."
Stephen Bushbaum — Head of Applied Research and Analytics at Trep, a data modeling and analytics firm specializing in CMBS, commercial real estate, and CLO markets. Bushbaum develops analytical frameworks to understand how property fundamentals, capital availability, and credit conditions interact during market transitions and maturity events.
The life sciences sector now faces a recovery period that will likely be gradual and uneven across geographies. Markets like the Bay Area and other biotech hubs built during the boom will need to absorb significant excess capacity before leasing fundamentals stabilize. This period of adjustment discussed at length in the podcast illustrates how quickly speculative enthusiasm can reverse once underlying demand becomes more rational.
The Bubble Pop and Its Consequences
The life sciences vacancy rate of 30% is not a market-wide average but rather reflects conditions in the major markets where the biggest buildout occurred. These markets—particularly in California and other innovation hubs—saw aggressive new supply additions during the pandemic recovery, betting on sustained tenant demand that ultimately did not materialize.
The collapse of demand stands in sharp contrast to the supply glut. During peak enthusiasm, developers rushed to bring new lab space to market, assuming that strong leasing velocity would continue indefinitely. When capital dried up and corporate spending on R&D contracted, landlords suddenly faced inventory they could not fill at the rents they had underwritten.
This dynamic is not unique to life sciences but is particularly acute in that sector because lab space is highly specialized and cannot easily be converted to other uses. A vacancy in generic office space offers more repurposing flexibility than a vacant lab building, making the 30% vacancy rate particularly challenging for asset owners who must either lower rents substantially or wait for demand recovery.
See also
What median coupon rate applies to commercial real estate refinancings year-to-date in 2026?
The median coupon for commercial real estate refinancings year-to-date in 2026 is approximately 6.44%, creating significant refinancing pressure for properties seeking to refinance at these elevated rates.
What is the ratio of refinance activity to new sales origination in the current commercial real estate market?
Refinance transactions are occurring at approximately seven and a half times the volume of new origination on sales transactions, indicating a market focused on managing existing debt rather than pursuing new acquisitions.
How does New York office loan volume compare to the entire Western U.S. market?
New York represents 43% of the overall CMBS office outstanding loan volume, which is 1.8 times the entire Western U.S. market combined, demonstrating the concentration of office exposure in New York.