
In May 2021, the city launched an experiment in the housing market that carried many hopes. It was a test in prescribed areas to see if the supply of residences could be, to use the description of Housing Commissioner Marisa Novara, “gently” expanded without disturbing neighborhood character.
This involved allowing additional dwelling units, or ADUs, typically basement or attic apartments or coach houses. The program carries many restrictions, but planners wanted to see if adding a unit here and there would introduce lower rents in expensive neighborhoods, help families or small landlords make extra income and encourage multi-generational housing that’s typically rent-free. Some units are called “granny flats.”