New York City Mayor Bill de Blasio has been promising to â€œpreserve or constructâ€ nearly 200,000 units of affordable housing since his days as the most unlikely of mayoral contenders. Since stepping into City Hall, the mayor has repeated that pledge nearly every chance he gets. But while the affordable housing plan is one of his central policy issues, itâ€™s still not clear how the city can hitÂ the mayorâ€™s magic number. That should change this week when de Blasioâ€™s housing team releases their detailed plan of action. Before that plan is released, however, AN asked some of the cityâ€™s leading architects, advocates, and planners what they hope to see in the teamâ€™s path forward.