HomeCommunities › Brownstown Township
Basement Risk Index™ · Community Report

Basement Flood Risk in Brownstown Township, Michigan

4BRI / 100
LOWER RISK
Ranked #110 of 116 metro Detroit communities

Brownstown Township, Michigan carries a Basement Risk Index of 4 out of 100, ranking #110 of 116 communities across metro Detroit, which is below the metro Detroit average. The score is driven by housing age and soil: 9% of Brownstown Township homes were built before 1960, the era before sump pumps, exterior weeping tile, and backwater valves were standard, and the region's heavy clay soil holds water against those older foundations.

Brownstown Township basement risk at a glance

Basement Risk Index4 / 100 (LOWER)
Metro rank#110 of 116
Homes built before 19609%
Peak building era2000s (27% of homes)
Median year built1994
Median home value$242,500
Median household income$84,571
Owner-occupied78%
Neighborhoods analyzed7

Brownstown Township's score is modeled from U.S. Census housing data; no municipal flood records are integrated yet. The Basement Risk Index is built from U.S. Census housing data and documented flood records. See our full methodology.

When Brownstown Township was built

The housing stock in Brownstown Township peaked in the 2000s, when about 27% of today's homes were built. In total, 9% of Brownstown Township homes predate 1960. That matters because basements built before the 1960s typically lack the sump pumps, perimeter drain tile, and backwater valves that became standard later, leaving many on their original, aging clay drain tiles.

2020 or later
1%
2010s
10%
2000s
27%
1990s
20%
1980s
5%
1970s
23%
1960s
5%
1950s
4%
1940s
3%
Before 1940
2%

How basement risk varies inside Brownstown Township

We score 7 individual neighborhoods inside Brownstown Township. Of those, 0 fall in the high or severe band, 0 are elevated, and 7 are moderate or lower. Risk is rarely uniform across a city, so the most useful number is the one for your own block.

0Severe
0High
0Elevated
1Moderate
6Lower

What this means for Brownstown Township homeowners

Brownstown Township scores toward the lower end of the metro range, largely because of its newer housing. Risk is still real on clay soil, so watch for symptoms after heavy rain.

Why Brownstown Township homes face basement risk

Basement flooding in Brownstown Township is mostly a function of housing age and soil. Older homes were built with clay drain tiles that crack and clog over decades, and the dense clay across southeast Michigan holds water against foundations rather than letting it drain.

How Brownstown Township compares

Brownstown Township's Index of 4 is below the metro Detroit median of 36. It ranks #110 of 116 communities region-wide.

Does insurance cover it?

Often not. Standard Michigan homeowners policies commonly exclude sewer backup and groundwater unless you carry a specific endorsement. Before the next storm, it is worth reading our guide on whether insurance covers basement flooding in Michigan and checking your declarations page.

What to do about it

  1. Lower risk is not zero risk on the region's clay soil, a free prevention check takes about 30 minutes.
  2. Watch for symptoms after storms; what you see at your own home matters more than any average.
  3. Maintain gutters and grading, the two cheapest protections any Michigan home has.
See Brownstown Township on the full metro Detroit Basement Risk Index map →

Explore the data behind this score

Basement Risk Check is a free, public homeowner resource built on public records. No signup, no login.

See Brownstown Township on the interactive metro Detroit Basement Risk Index map →
Read the published methodology →
Browse all 116 communities ranked →

Nearby communities

Woodhaven · 14Riverview · 39Trenton · 55Flat Rock · 32Grosse Ile Township · 32

Homeowner guides

Does insurance cover basement flooding?What to do when your basement floodsThe 2021 metro Detroit floodsWhat keeps a Michigan basement dry

Frequently asked questions

Is Brownstown Township at high risk for basement flooding?

Brownstown Township scores 4 out of 100 on the Basement Risk Index, ranking #110 of 116 metro Detroit communities (LOWER risk). The score reflects how much of the local housing stock predates modern basement drainage, on the region's clay soil.

Why does housing age matter so much in Brownstown Township?

Sump pumps, exterior weeping tile, and backwater valves only became standard in the 1960s and 70s. 9% of Brownstown Township homes were built before 1960, with the largest share built in the 2000s. Many still rely on original clay drain tiles that fail over time.

Does homeowners insurance cover basement flooding?

Often not. Standard policies commonly exclude groundwater and sewer backup unless you carry a specific rider. See our Michigan insurance guide.

Is this resource free to use?

Yes. The Basement Risk Index and every community report are free and public, with no signup and no login.