Flood Zones: Oak Park vs Orland Park
How do flood zones rules compare between Oak Park, IL and Orland Park, IL?
Oak Park and Orland Park have similar restriction levels.
Oak Park, IL
Cook County
Oak Park has FEMA-designated flood zones primarily along the Des Plaines River corridor and areas affected by the combined sewer system. Properties in Special Flood Hazard Areas (SFHAs) must comply with floodplain development regulations including elevation requirements, flood insurance mandates, and construction restrictions. The village participates in the National Flood Insurance Program (NFIP).
View full Oak Park rules →Orland Park, IL
Cook County
Orland Park participates in FEMA's National Flood Insurance Program and has adopted floodplain regulations consistent with FEMA standards. Development in mapped Special Flood Hazard Areas (Zones A and AE on the FEMA Flood Insurance Rate Map) requires a floodplain development permit. Lowest floor elevation must be at or above the regulatory flood protection elevation.
View full Orland Park rules →Key Facts Comparison
| Fact | Oak Park | Orland Park |
|---|---|---|
| NFIP Participant | Yes | - |
| Primary Flood Risk | Des Plaines River & combined sewers | - |
| Elevation Required | At or above BFE in SFHAs | - |
| Substantial Improvement | 50% of market value triggers compliance | 50% of value triggers |
| CRS Participation | May reduce insurance premiums | - |
| Mapped Zones | - | A, AE in SFHAs |
| Freeboard | - | 1 ft above BFE |
| Permit Required | - | All work in SFHA |
| Flood Insurance | - | Required for federal mortgage |
Highlighted rows indicate differences between cities.
Oak Park FAQ
Is my Oak Park property in a flood zone?
Check FEMA's Flood Insurance Rate Maps (FIRMs) at msc.fema.gov or contact the village's engineering department. Properties near the Des Plaines River corridor are most likely to be in designated flood zones.
Do I need flood insurance in Oak Park?
If your property is in a Special Flood Hazard Area and you have a federally backed mortgage, flood insurance is required. Even properties outside SFHAs can flood, so insurance is recommended for all Oak Park homeowners.
Can I finish my basement if I am in a flood zone?
Basements in SFHAs face strict regulations. Substantial improvements (costing 50% or more of the structure's value) must comply with floodplain development standards. Contact the village's Building Division before starting work.
Orland Park FAQ
How do I know if my Orland Park property is in a flood zone?
Check the FEMA Flood Map Service Center at msc.fema.gov, your title or insurance documents, or contact Village Public Works. Properties along Tinley Creek, Marley Creek, and Cal-Sag tributaries are most likely affected.
What can I do to my property if it's in a flood zone?
Construction, substantial improvement, fill, and grading require a floodplain development permit. New residential structures must be elevated to 1 foot above the base flood elevation. Substantial improvements trigger full compliance.
Do I need flood insurance?
If you have a federally-backed mortgage on a property in a Special Flood Hazard Area, your lender will require flood insurance under the NFIP. Even outside SFHAs, flood insurance is recommended in areas prone to local flooding.
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