Grading & Drainage: Dearborn vs Detroit
How do grading & drainage rules compare between Dearborn, MI and Detroit, MI?
Dearborn and Detroit have similar restriction levels.
Dearborn, MI
Wayne County
Dearborn requires site grading to drain away from buildings and to not discharge onto neighboring properties. Major grading triggers Michigan Part 91 SESC permits and stormwater review.
View full Dearborn rules →Detroit, MI
Wayne County
Detroit requires grading and drainage plans for new construction and significant site modifications to ensure proper stormwater flow and prevent water damage to adjacent properties. Plans are reviewed by BSEED and DWSD.
View full Detroit rules →Key Facts Comparison
| Fact | Dearborn | Detroit |
|---|---|---|
| Slope from building | 6 inches in 10 feet minimum | - |
| Neighbor runoff | Prohibited to increase | - |
| Sump discharge | 5 feet from property line | - |
| Large grading | SESC permit required | - |
| Plan Required | - | New construction and significant site modifications |
| Direction | - | Water must drain away from foundations |
| Review Authority | - | BSEED and DWSD |
| Downspouts | - | Must discharge to approved outlets |
| Neighbor Impact | - | Cannot redirect drainage onto adjacent property |
Highlighted rows indicate differences between cities.
Dearborn FAQ
Can I connect my sump pump to the sanitary sewer?
No. Sump pumps must discharge to the yard or an approved storm drain, not the sanitary sewer.
What if my neighbor regrades and sends water to my yard?
Contact Dearborn Building and Safety for inspection. Persistent issues may require a civil drainage claim.
Detroit FAQ
Do I need a grading plan for construction in Detroit?
Yes, new construction and significant site modifications require grading and drainage plans reviewed by BSEED. Larger projects also require DWSD review for stormwater management compliance.
Can my neighbor direct water onto my Detroit property?
No. Detroit code prohibits redirecting natural drainage patterns in ways that cause flooding or water damage to adjacent parcels. You can file a complaint with BSEED if this occurs.
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