1000M

Kara Mann, of Kara Mann Design, will design the 323 individual residences and nearly 40,000 square feet of indoor and outdoor amenity space. Mann will also provide residents on the upper floors with the option to have their outdoor spaces staged and decorated.[9] Kitchens will be outfitted with custom cabinetry and Sub-Zero and Wolf appliances; master suites will feature bathrooms with oversized showers and soaking tubs.[1] Mann said she wanted the interiors to have "a purity and lightness." The building will also have a two-story lobby.[10]

According to Crain's Chicago Business, plans for the building were released in August 2015.[11] Although the historic district zoning has height restrictions of 425 feet (129.5m), on September 23, 2015 the City Clerk of Chicago's website posted that the building is planned to have a rooftop terrace that reaches 1,030 feet (313.9 m) according to Dennis Rodkin of Crain's Chicago Business.[12] Over a month later, Blair Kamin of the Chicago Tribune stated that the plan was to be for a 1,001-foot (305.1 m) tower. Eventually, the building was redesigned to stand at 832 feet (253.6 m).[4] The plan was approved on April 22, 2016.[13] Instead of the more common setback architectural design, the original building would have had overhangs on its south face with rising cubes that are successively larger that present a "striking, if somewhat precarious, effect" according to the Pulitzer Prize-winning Blair Kamin.[14]

Based on an October 29, 2015 presentation, the planned 506-unit building was to include 358 condominiums and 148 rental apartments between the 100-foot (30.5 m) Lightner Building at 1006 South Michigan and the 272-foot (82.9 m) Karpen-Standard Oil Building at 910 South Michigan on what has been a vacant lot.[14] The early designs for the building included an 85th-floor roof deck for condo residents.[7] The property, which overlooks Grant Park, had been owned by Warren Barr who had plans for a 40-story condominium tower until he lost ownership through foreclosure to First American Bank in a July 2010 proceeding that saw the property sell for $11.3 million.[15][11] If completed, the building will surpass the 430-foot (131.1 m) Metropolitan Tower at 310 South Michigan as the Historic Michigan Boulevard District's tallest structure.[14] Even after the shorter redesign, the building retained the claim as the tallest building along Michigan Avenue in the Historic Michigan Boulevard District across from Grant Park.[16]

1000M, November 2022

Commission on Chicago Landmarks has jurisdiction over the proposal due to its placement in the Historic District.[14] In February 2016, The Landmark Commission considered formalizing a 900-foot (274.3 m) height restriction in the region of the historic district between 8th and 11th streets.[17] Subsequently, the tower's height was scaled-back to 832 feet (253.6 m) and the building was redesigned to employ the current curving silhouette.[18]

If completed, the building will surpass the 430 feet (131.1 m) Metropolitan Tower at 310 South Michigan as the Historic Michigan Boulevard District's tallest structure.[14] It will also become the tallest building in the city south of the Willis Tower. Even after the shorter redesign, the building retained the claim as the tallest building along Michigan Avenue in the Historic Michigan Boulevard District across from Grant Park and the 13th tallest building in the City of Chicago.[19][20]