There's already a major building boom going on in NYC at the moment!

11+ super-talls (300m+) and 40+ talls (150m+) are under construction at the moment, and more than that has been completed in just the last few years. Massive amounts of rental units and co-ops are coming online in UWS (Riverside Center), Hudson Yards in Mid-Town etc [1]. And prices have come noticeably down as a result, you can also get more concessions than ever. I just recently received 3.5 months free on a 14 month contract in a brand new building.

[1] https://ny.curbed.com/maps/nyc-new-development-hudson-yards-...