Get your zip code's Risk Score
Scored 0 to 100 against every other Detroit zip, using the city's own water-in-basement reports.
Basement risk across Detroit, mapped
Each point is a cluster of water-in-basement reports filed with the city. Brighter and larger means more reports relative to neighborhood activity.
Point positions are the geographic center of each zip's reported incidents. City of Detroit 311 records, June 2026.
Why southeast Michigan floods
Clay soil, 60-year-old drain tiles, and the same streets every storm
Basement flooding here is not bad luck. Heavy clay soil holds water against foundations, and much of the housing stock around Detroit was built before 1965, with drain tiles that have been failing quietly for decades. Homeowners usually find out the hard way, after the drywall is soaked and the furnace is damaged, when an insurance adjuster explains what a groundwater exclusion is.
Catching the problem early is the entire game. A sealed crack or corrected grading runs a few hundred dollars. The same water, left alone through one more freeze-thaw winter, becomes an $8,000 to $20,000 excavation.
What happens next
See your Risk Score and the actual report count near you.
A licensed, insured local pro walks the basement and foundation. No obligation.
A sealed crack today costs a fraction of an excavation next spring.
Common questions
Is this really free?
Yes. The score lookup and the in-home assessment both cost nothing. If repairs are recommended, you decide whether to get a quote. There is never an obligation.
Where does the flooding data come from?
Directly from the City of Detroit's public 311 records. Every number on this site is a count of real reports filed by residents, retrieved June 2026. We do not estimate or inflate the figures.
Who will contact me?
First, our team confirms your request by text within a couple of minutes. Then the licensed contractor for your area calls to schedule. Your information goes to that one contractor and is never resold.
I live in the suburbs. Does this apply to me?
The scored records currently cover the city of Detroit, but the clay soil and housing age that drive flooding are regional. The free assessment is available across most of Wayne, Oakland, and Macomb counties, and suburban scoring is in the works.