If you dump 100 new houses onto a small town you will cause a crash.
My town has a population of 15000 people, ~250 houses are sold per year and there is a development with permission to build ~400 new homes.
My town has a population of 15000 people, ~250 houses are sold per year and there is a development with permission to build ~400 new homes.
This has never happened once... There are plenty of developments built bigger than that that do t cause a crash
Besides that, they sell plots before they're even built so why are they drip feeding in those cases? You'd be racing to get it built before materials cost rise even more