A view of the proposed building looking west. Renderings by Architectural Alliance.

A three-story office building would be renovated and an 11-story apartment building constructed on the surface parking lot behind it under a plan submitted to the Downtown Commission.

The proposal calls for a total of 153 apartment units over a four-story, 206-space parking garage, in addition to about 30,000 square feet of renovated office space at 366 E. Broad St.

The law firm Carlile Patchen and Murphy occupied the building for decades before putting it on the market last year, and is now planning a move to a new building that is nearing completion at Grandview Yard.

Materials submitted to the City of Columbus in advance of the December 18 meeting show a U-shaped building with a rooftop amenity deck, as well as a new green roof on a portion of the Broad Street building.

Development partners listed on the submittal packet include Daimler, Hanks Holdings and Finance Fund. Architectural Alliance is the architect.

The commission will hear the proposal conceptually, meaning no vote will be taken and that the project will need to return to a future meeting for final approval.

The Downtown Commission meets at 8:30 a.m. on December 18, at 111 N. Front St.

The renovated office building on Broad Street is shown with a green roof.