The Hartford sold its 450,000-square-foot Windsor office campus for $7.5 million, just 5% of its nearly $150 million development cost. Buyer Mark Greenberg plans to convert part of the complex into up to 500 apartments, reflecting deep office vacancy rates above 31% north of Hartford.
The Hartford sold its 450,000-square-foot Windsor office campus this month for $7.5 million, representing just 5% of the near $150 million it cost to build in the late 2000s. The buyer, real estate investor Mark Greenberg, acquired the property from the insurer as part of its strategy to divest excess office holdings.
Mark Greenberg aims to convert portions of the class A-plus property into residential units, potentially creating up to 500 apartments. Plans include opening a gym, cafeteria and a boardroom for tenants to enhance appeal amid shifting workspace preferences.
Office vacancy north of Hartford stood at 31.3% at the end of 2025, down from 36.8% a year earlier but still reflecting significant underutilization. The pandemic and hybrid work trends have driven employers to reduce footprint and seek alternative uses for aging office campuses.
This sale follows the insurer’s 2022 consolidation of hundreds of workers from Windsor back to its Hartford headquarters and marks a substantial loss on development cost. The transaction signals a strategic shift away from suburban satellite locations and impacts the company’s commercial real estate portfolio.
