Postwar lots, mature canopy, and the teardown question
Northbrook's housing is overwhelmingly postwar — mid-century ranch and split-level from the 1950s through the 1970s, later-generation colonial and contemporary from the 1980s onward, with an active teardown and rebuild market layered on top. The median resident age is 48.5, and the lots are generous by inner-suburb standards.
The defining asset is the canopy. Trees planted with those 1950s and 1960s subdivisions are now mature, and they are the single biggest thing separating a Northbrook yard from a new-build subdivision. They are also the thing most at risk during a rebuild, which is exactly what the Village's tree protection ordinance is aimed at.

