Chicago: Flooding and In-law/Garden units

[John Huynh]

I notice in Chicago that there are a lot of mult-units with garden units and in-law units. It also seems like the rain storms are getting worse, If you own a building with a garden unit or in-law unit, has yours ever flooded? What are some devices/systems that you would recommend to mitigate/stop flood damage? Are those devices/systems typical in those garden/in-law units? Are there any things that I can look for when viewing properties in order to see if there was past flood damage?