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Office Deep Dive: Philadelphia’s big-block office absorption trails major markets

Only three new major leases were signed in 2025
CoStar Analytics
November 5, 2025 | 12:00 P.M.

Philadelphia ranks among the slowest markets nationwide for absorbing big-block office space, with availability declining by just 1.6% from its peak. This small drop in large office availability — defined as spaces of at least 100,000 square feet in high-end buildings — shows that leasing activity is sluggish compared to other major cities.

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