Flood Zones: Chicago vs Evanston
How do flood zones rules compare between Chicago, IL and Evanston, IL?
Chicago and Evanston have similar restriction levels.
Chicago, IL
Cook County
Chicago participates in the National Flood Insurance Program (NFIP) and regulates construction in FEMA-designated Special Flood Hazard Areas. The city's floodplain management ordinance establishes construction standards above base flood elevation.
View full Chicago rules →Evanston, IL
Cook County
Evanston participates in the National Flood Insurance Program and regulates construction in FEMA-designated Special Flood Hazard Areas. New construction and substantial improvements in flood zones must elevate the lowest floor at least one foot above base flood elevation. Evanston's flood damage prevention ordinance exceeds minimum NFIP standards.
View full Evanston rules →Key Facts Comparison
| Fact | Chicago | Evanston |
|---|---|---|
| Program | NFIP participant | - |
| Standard | Construction above Base Flood Elevation required | - |
| Enforcement | Dept. of Buildings + MWRD | - |
| Flood Map | FEMA FIRMs identify SFHAs | - |
| Key Areas | Chicago River, North Shore Channel, lakefront | - |
| Freeboard Requirement | - | 1 foot above BFE |
| CRS Participant | - | Yes — insurance discounts possible |
| Substantial Improvement | - | 50% of market value threshold |
| Elevation Certificate | - | Required before occupancy |
| Community Dev | - | (847) 448-4311 |
Highlighted rows indicate differences between cities.
Chicago FAQ
Is my Chicago property in a flood zone?
Check FEMA's Flood Insurance Rate Maps (FIRMs) for your address. Areas along the Chicago River, North Shore Channel, and some lakefront sections are in Special Flood Hazard Areas requiring flood insurance and elevated construction.
Do I need flood insurance in Chicago?
If your property is in a FEMA-designated Special Flood Hazard Area and you have a federally backed mortgage, flood insurance is required. It is recommended for all properties near waterways regardless of zone designation.
Evanston FAQ
How high must new construction be above the flood level in Evanston?
The lowest floor, including basement, must be at least one foot above the base flood elevation. This freeboard requirement exceeds the minimum NFIP standard and provides additional flood protection.
Does Evanston participate in the CRS program?
Yes. Evanston participates in the Community Rating System, which can provide flood insurance premium discounts to residents in SFHAs based on the city's floodplain management practices.
Can I renovate a building in a flood zone in Evanston?
Yes, but if the improvements equal or exceed 50% of the structure's market value, the entire structure must be brought into compliance with flood zone requirements, including elevation above BFE.
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