Office-to-Residential Conversion & Adaptive Reuse
Chicago’s downtown has a large supply of older office, loft and industrial buildings that no longer work for their original use, and many are too good to tear down. 3F Construction converts these buildings into apartments, helping developers uncover the potential in existing structures while keeping the character that makes them worth saving.
Our adaptive reuse work includes The Smith at 223 W. Erie, where 24 largely vacant office suites in a River North loft building are becoming 66 apartments; Birken Lofts at 401 W. Ontario, which turns the 1905 S. Birkenstein and Sons headquarters into 57 residences while keeping its heavy timber structure and arched windows; and the Boylston Building Lofts at 118-120 W. Illinois, a seven-story building being converted into 36 loft apartments.
Since 2009, 3F Construction has renovated thousands of multifamily units. Our team is led by real estate developers, so we evaluate a conversion the way an owner does: what it costs, how long it takes and what the finished units will rent for. With 3F Construction, old buildings aren’t just renovated—they’re reimagined.
Approach to Adaptive Reuse Construction
Since 2009, 3F Construction has not only transformed thousands of multifamily units but has also refined its approach to adaptive reuse projects. Our team applies production-based construction techniques to repurpose existing structures efficiently while maintaining cost control. We leverage long-standing relationships with material suppliers and distributors, sourcing everything from structural materials to finishes directly—whether locally or internationally—to minimize markup and maximize value.
Every conversion starts with the building itself. Early in preconstruction we look at floor plate depth and window spacing, which drive unit layouts and natural light; the location of plumbing risers and shafts; structural capacity for new loads and rooftop amenities; and the egress, fire protection and accessibility upgrades required for residential use. Getting those answers early keeps budgets and schedules realistic and helps owners evaluate incentives such as historic tax credits.
Adaptive Reuse FAQs
What is adaptive reuse?
Adaptive reuse is converting an existing building to a new use. In Chicago that most often means turning office, loft or industrial buildings into apartments.
Does 3F do office-to-residential conversions?
Yes. 3F is the general contractor on The Smith at 223 W. Erie in River North, converting 24 office suites into 66 apartments.
Which buildings make good residential conversions?
Buildings with narrower floor plates, good window lines, workable plumbing paths and sound structure. Older loft and mid-rise office buildings in River North, the Loop and the West Loop are often strong candidates.
Can ground-floor retail tenants stay during a conversion?
Often, yes. At The Smith, the ground-floor commercial tenants remain in place while the upper floors are converted.
Do you work on historic buildings?
Yes. Our projects include Birken Lofts (built 1905), Century Tower (a 1930 Art Deco landmark in the Loop) and The Edison (a 1920s hotel building in Edgewater).
