The Philadelphia regional industrial big box market entered 2026 in a stabilization phase, with elevated vacancy concentrated in supply-heavy infill submarkets across Southeastern Pennsylvania and Southern New Jersey.
According to a recent Colliers report, leasing activity improved during the quarter as tenant decision-making remained measured, while rental rates leveled off but remained near historic highs. The Philadelphia regional industrial big box market recorded more than 13.3 million square feet of leasing activity in Q1 2026. Notable transactions included a 1.5 million-square-foot renewal in Central Pennsylvania and multiple large-scale leases across Burlington, Southeastern Pennsylvania, and the Lehigh Valley.Â
Flight to quality dynamics persisted, as occupiers prioritized building functionality, cost efficiency, and vertical cube utilization. Eastern Pennsylvania remains the nation’s top big box market, supported by access to more than 58 million consumers and major logistics infrastructure. Markets like Burlington and Northern I-81 remain tight, while others continue to rebalance following recent development cycles.
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