When it comes to housing stock these past gov policies and local private+public development grants can have a long term impact on any city well beyond any decade.

The various building/zoning/etc policies are often long lasting: Prior land use could have been terribly inefficient from some half-failed social housing project, left to arson/deterioration of perfectly good buildings in Harlem in the 80s due to rent control and impossible-to-evict tenants not allowing renovations on the building. Plenty of middle-class & wealthy people keeping (now) expensive apartments under rent-control, reducing new development appropriate for that market and taking stock and taxes/income the area. Prior low-density developed areas can be locked down for decades due to elderly and other single-family homeowners staying for long periods of time. The well-covered complete lack of development of anything in-between a single-family houses and condo/office highrises in most cities also for decades. Etc, etc.

There's plenty of legacy decisions keeping housing expensive and highly inefficient.