Flood Zones: Detroit vs Westland
How do flood zones rules compare between Detroit, MI and Westland, MI?
Detroit and Westland have similar restriction levels.
Detroit, MI
Wayne County
Detroit participates in FEMA's National Flood Insurance Program and the voluntary Community Rating System. Floodplain regulations are in City Code Chapter 50 (Zoning), Article XIV Division 5 - Floodplains and Hazard Areas, with administration by BSEED Environmental Affairs. Any development in a designated 100-year floodplain triggers site-plan review and elevation/flood-resistant-construction requirements before BSEED can issue a building permit.
View full Detroit rules →Westland, MI
Wayne County
Westland participates in the National Flood Insurance Program. Properties in FEMA Special Flood Hazard Areas near Rouge River tributaries require elevation certificates and flood insurance.
View full Westland rules →Key Facts Comparison
| Fact | Detroit | Westland |
|---|---|---|
| City Code | Ch. 50 Art. XIV Div. 5 (Sec. 50-14-521+) | - |
| Permit Section | Sec. 50-14-527 Floodplain Permits | - |
| FIRM Source | FEMA NFIP / msc.fema.gov | - |
| Building Code Standard | Detroit BC 2019 Appendix G | - |
| 50% Rule | Triggers full flood-code compliance | - |
| Administered By | BSEED Environmental Affairs | - |
| Program | - | NFIP participant |
| Flood sources | - | Rouge River, Tonquish Creek |
| Elevation | - | 1 foot above BFE minimum |
| Basements | - | Prohibited in SFHA |
| Insurance | - | Required for federal loans |
Highlighted rows indicate differences between cities.
Detroit FAQ
Is my Detroit property in a flood zone?
Check the FEMA Map Service Center (msc.fema.gov) for Detroit's effective Flood Insurance Rate Map (FIRM). Properties shown in Zone A, AE, or other Special Flood Hazard Areas are subject to City Code Chapter 50, Article XIV, Division 5 floodplain rules and may require flood insurance if federally mortgaged.
Do I need a Detroit floodplain permit?
Yes, if your project is in a Special Flood Hazard Area and counts as 'development' under the NFIP - new construction, substantial improvement, fill, grading, or paving. The Sec. 50-14-527 floodplain-development permit is issued by BSEED Environmental Affairs as part of the building-permit process.
What is the FEMA 50 percent rule in Detroit?
If a renovation or repair to a building in the floodplain costs 50 percent or more of the structure's pre-improvement market value, FEMA NFIP rules require the whole structure to be brought into compliance with Detroit's flood-resistant construction standards (Appendix G of the 2019 Detroit Building Code).
Westland FAQ
How do I know if my property is in a flood zone?
Check FEMA Map Service Center at msc.fema.gov or call Westland Building at (734) 467-3200.
Can I finish my basement if I am in a flood zone?
Generally no. Basements below base flood elevation are prohibited in SFHAs under NFIP rules.
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