The housing stock in Downers Grove comprises a mixture; some, generally near the center of town, date from the middle of the 19th century, but housing styles of each succeeding generation are represented. Downers Grove has witnessed one of the highest teardown rates in the Chicago area; small older residences are being demolished and replaced with much larger new houses. Teardowns have been the source of much controversy within the village. Since they occupy much more land than the original houses, rainwater that was originally absorbed by their yards is directed into neighboring yards and streets, resulting in flooding. Concerns have been expressed that teardowns reduce affordable housing in the town.