Earlier quoted context omitted.
A counterexample is Vienna, which utilizes a well balanced system of rent-control and social housing to have incredibly low rents and still a stable supply of flats. One tweak they apply is that rent-control does not apply to new developments, so creating new flats is more lucrative than turning old buildings into luxury developments. The city also acts as a competitor, driving prices down by offering cheap flats. Th…
San Francisco also applies rent control only to older buildings. The effect is that developers only build top-of-market “luxury” housing (often cheaply constructed it rented at luxury rates). This helps them recover their development costs, which they couldn’t recoup on affordable housing.
1. Land zoned for more than a single-family home or just a few units is relatively scarce and thus expensive.
2. The planning process is ridiculously long, which means:
2a) They need to pay property taxes on the unimproved land for much longer without any income, and
2b) Investors expect a certain % return per year, so a longer amount of time between the investment and sale means you need higher prices.
3. Nearly every development project faces lawsuits from NIMBYs, and lawyers are expensive.
Remove rent control and we'd still have the same situation with new development.