Walter Burnett, Jr.

North and west of Loop, skyline looking up

North and west of Loop, skyline looking up

Chicago’s skyline could be growing taller north and west of the Loop.

North of the Loop, JDL Development wants to spend $700 million to develop two luxury residential towers on a parking lot just west of Holy Name Cathedral, including one that would become the city’s sixth-tallest skyscraper.

To the west, Related Midwest plans the two tallest towers in the fast-changing Fulton Market district. The two separate projects would create a 58-story residential and hotel tower and a 51-story residential tower.

Zoning plans for the projects were submitted to the city Wednesday. Submitting planned developments is a preliminary step toward gaining zoning...