New housing developments mushroomed on the edge of town.

development

a piece of land with new buildings on it

a commercial/business development
商业开发区

a housing development
新建住宅区

mushroom

/ˈmʌʃruːm/
verb
to grow and develop very quickly

Factories mushroomed along the river.
工厂沿着河如雨后春笋般地兴建了起来。

We expect the market to mushroom in the next two years.
我们期望未来两年内市场会迅速发展。