A major transformation is reshaping the Northern and Central New Jersey commercial real estate landscape. Over the past five years, nearly 10 million square feet of obsolete office space has been permanently removed from the market and repurposed, according to JLL’s Summer 2026 New Jersey Office Redevelopment Trends Update.
The report highlights an accelerating trend, with approximately 2 million square feet of office inventory removed in 2026 alone—marking the highest level of redevelopment activity the region has seen since 2022. Driven by a combination of aging office stock and a total lack of new office construction, New Jersey’s overall office inventory has contracted from 175 million square feet in 2017 to 164.6 million square feet today.
Rather than remaining vacant, these outdated properties are being systematically demolished or converted to better align with current economic, demographic, and civic demands.
According to JLL’s findings, more than 80% of all demolished or removed office buildings have been replaced by either residential communities or industrial warehouses.
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Housing Converted: Residential projects account for the largest share at 46.6% of all redevelopment activity.
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Industrial Shift: Warehouses account for 34.3% of the repurposed space.
A major catalyst behind the residential conversion surge is New Jersey’s affordable housing obligations. Municipalities across the state are actively leaning into underutilized office parks as prime opportunities to satisfy state-mandated housing requirements while refreshing underperforming properties.
“Office redevelopment has become one of the defining forces reshaping Northern and Central New Jersey’s office market,” Stephen Jenco, JLL senior director of research said. “The data shows this is no longer an isolated trend. Redevelopment is systematically removing obsolete inventory, creating opportunities for higher and better uses, and helping reposition the office market for its next phase.”
The report notes that office obsolescence is being heavily driven by factors beyond simple vacancy, including outdated building systems, inefficient floor plates, a lack of modern amenities, and poor transit access.
Geographically, the redevelopment activity is highly concentrated. The Lower 287 and Parsippany submarkets alone account for nearly 30% of all office redevelopment activity across Northern and Central New Jersey.
“Companies continue to gravitate toward high-quality office environments, while owners of aging buildings are increasingly evaluating alternative uses that better match market demand,” Tim Greiner, JLL executive managing director added. “At the same time, redevelopment is creating opportunities for municipalities to address housing needs, improve underperforming properties and strengthen their long-term tax base.”
Moving forward, JLL forecasts that redevelopment will continue to strengthen the state’s remaining office market fundamentals by thinning out obsolete supply. Future activity is expected to remain heavily concentrated in the Lower 287, Parsippany, and Route 78 corridors. However, the report cautions that future industrial conversions could face headwinds, as shifting local zoning laws in certain municipalities may begin to limit new warehouse and data center development opportunities.
