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Short supply of modern medical office space pushes Philadelphia rents higher
By Brenda Nguyen CoStar Analytics
Philadelphia's medical office market posted stronger rent increases in mid-2026, even as leasing activity remained below long-term averages.
Asking rents for medical office space increased 2.5% year over year to an average of $27.72 per square foot, outperforming the traditional office market and reversing six consecutive quarters of decelerating rent growth.
The increase in asking rents reflects supply constraints more than accelerating demand. Healthcare providers continue to lease space for outpatient facilities, specialty practices, and ambulatory care centers, but the availability of that specialized space remains relatively limited at 10.1%.
More notably, the supply of newer medical office space is exceptionally tight. Of Philadelphia’s 4.3 million square feet of available medical office space, less than 350,000 square feet is available in buildings constructed since 2015.
When in-demand medical buildings are scarce, landlords can maintain pricing power on rent even during periods of moderate leasing activity. Providers seeking space that supports modern outpatient care and specialized medical services often have few options, allowing these in-demand properties to command above-average rents. A relatively small number of higher-priced leases can lift the headline asking rents.
Additionally, the prominence of smaller office deals, which also command higher rents, also influences market rates. For instance, in June 2026, Salterra Wellness signed a five-year lease for a 2,084-square-foot space in Newtown at a starting rate of $29.94 per square foot.
Limited development has reinforced these pricing dynamics. Only 295,000 square feet of medical office space was under construction in mid-2026, and nearly all that space was already pre-leased or intended for owner-occupants. With little new modern space expected to reach the market, existing landlords face little competitive pressure.
As a result, rent growth is being driven less by a broad expansion in demand and more by a shortage of newer, in-demand medical office buildings. Until there is a meaningful acceleration of construction activity, supply constraints are likely to remain a primary driver of rent growth across Philadelphia's medical office market.
