I misspoke. By "getting rid of suburbia", I mean getting rid of American-style, car-centric suburban development. You'll absolutely want to have development in the suburbs.
And to do that, you don't need a lot of changes in regulations. Surely, you'll have to fight with NIMBYs, but these changes do not require massive regulations:
- Upzoning all R1 zones, and abolish Euclidian Zone. Just by getting rid of exclusive single-family zones that are so prevalent in the US, and start allowing multi-family townhouses, mixed-use areas, you could recover basically every city that is not part of coastal metro area: https://www.youtube.com/watch?v=bnKIVX968PQ
- Transit-oriented development. City Beautiful has a great video about it: https://www.youtube.com/watch?v=RYsqWIGyRVk
I think NYC’s location is one of the difficulties involved with such a plan. NYC is partly desirable because its locality makes it an easy hub for travel to and from Europe. You can make other cities attractive by other means, but it will be hard to beat this and the entrenchment of current residents and businesses.
The idea of eliminating suburbs to fix supply is interesting. I do think that could be beneficial, but at the same time, that also would require regulations or policies that push development away from suburbs and into cities. Either way you’ll need some kind of regulatory intervention.
The question is whether or not supply increase is sufficient to alter the market, I’m skeptical of such a claim because new residential developments crop up in NYC all the time but it doesn’t seem to help drive down rates at all. Furthermore, NYC’s population for the decade had its peak in 2016, yet prices then were more affordable[1]. Maybe there’s data that shows there’s an extreme influx of individuals now and the population in NYC surpassed this number in 2022, but I’d be surprised if that were the case esp. when you factor in new building developments that occurred in the meantime. I don’t think it boils down to a simple supply problem. It may be due to the fact that brokerages are snatching up properties and charging more than individual landlords, it may be a side effect of inflation, it may be predatory profit seeking after the pandemic. I don’t know, but I don’t think merely throwing up a bunch of new buildings will necessarily fix things, and as I mentioned before, we need to consider the other negative consequences of such a plan (density, the consequent environmental impacts etc.)
[1]: https://www1.nyc.gov/assets/planning/download/pdf/planning-l...