The conversion of One Wall Street, a building designed by prolific Art Deco architect Ralph Walker, has been underway for several years.

Developer Harry Macklowe purchased the building, which had previously served as the headquarters for the Irving Trust Company and the Bank of New York, in 2014, with the goal of turning it into apartments. Since then, the firm has been working on getting the necessary approvals, and gutting the entire thing to prep for its ...