The mostly vacant offices inside 500 N. Michigan are officially on borrowed time. An interior-demolition permit has cleared the way for Commonwealth Development Partners to start tearing out the upper floors of the Magnificent Mile tower as part of a plan to convert the building into housing. The 24-story high-rise is slated to be reworked into roughly 320 apartments while keeping retail at street level and some office space, with the new permit marking the first visible sign that the project is shifting from paperwork to actual construction work.
Permit clears interior gutting
The new interior demolition permit lets contractors strip out non-structural finishes and remove existing office build-outs, essentially taking the upper floors down to a blank slate for future residential layouts. The permit lists Skender as the general contractor and covers demolition across multiple upper levels that will be reconfigured into apartments and amenity space, according to Urbanize Chicago.
What the plan adds
Under a design by GREC Architects for Connecticut-based Commonwealth Development Partners, floors 6 through 23 are set to become a mix of studios, one-bedrooms, and two-bedrooms, with 64 units reserved as affordable housing. Offices would continue on floors three through five, and retail would remain on the first two levels, per reporting by Chicago YIMBY.
Design, layout and amenities
Project documents show residents would gain seventh-floor amenity space along with a new indoor-outdoor rooftop area carved out of the building’s existing mechanical penthouse. That rooftop change needs a minor amendment to the site’s Planned Development. The city’s PD 487 filings spell out the proposed floor plans along with the zoning tweaks tied to the rooftop work and residential build-out, according to the City of Chicago.
Parking and street access
The plan keeps the basement parking garage intact, with valet service for roughly 68 cars and continued access from Lower Illinois Street after the conversion. Those details, along with the decision to keep street-level retail in place, show up in coverage that situates the project inside a broader push to tackle empty offices through conversions. City officials have pointed to the 500 N. Michigan proposal as part of that trend, according to the Chicago Sun-Times.
What this means for downtown
The 500 N. Michigan overhaul joins a growing list of office-to-residential conversions in the Loop and along North Michigan Avenue as developers react to higher vacancy rates and shifting demand. Local coverage and city leaders say the goal is to bring more full-time residents and steady foot traffic back to downtown corridors, even as permitting requirements and construction costs continue to slow or stall some proposals, according to WBEZ.
With the interior-demo permit in place, crews can move from the planning phase into physical gutting, although Commonwealth has not released a construction schedule and there is still no firm timeline for leasing or move-ins. For now, the permit stands as the clearest signal that the Mag Mile tower is shifting from mostly vacant offices toward a residential future, as reported by Urbanize Chicago.
