Can I build in the flood plain?

Yes, construction is permitted in the flood plain in accordance with the Village of Winnetka’s Flood Hazard Protection Ordinance. Improvements to existing homes are permitted as long as the total cost of the improvements are less than 50% of the current market value of the structure, excluding the land. By law, the cost of the improvements is calculated cumulatively over the remaining life of the structure.

Construction of a new home with a basement may be permitted in the flood plain, if a Letter of Map Revision - Fill (LOMR-Friday) is first obtained from FEMA. The LOMR-Friday can be obtained if engineered fill has been placed and compacted on the site to create a clay building pad for the home. All work must be done in accordance with the Village’s Flood Hazard Protection Ordinance. A LOMR-Friday, removes that portion of the property that was filled from the flood plain, thereby allowing a home to be constructed with an engineered basement. Otherwise, if site constraints do not allow for a LOMR-Friday, a home with a floodable crawlspace (no basement) may be constructed.

Compensatory storage must be provided to offset any fill that is placed in the flood plain, under any circumstance. Compensatory storage must equal a minimum of 110% Fill volume.

Show All Answers

1. What is the 100-year flood plain?
2. What regulations must be followed for construction within and adjacent to the flood plain?
3. What is the Base Flood Elevation (BFE)?
4. What is the Flood Protection Elevation (FPE)?
5. When is my house considered in the flood plain?
6. My property was never in the flood plain before, why is it in the flood plain now?
7. When do I need to buy flood insurance?
8. Can I build in the flood plain?
9. Are there any restrictions for construction for homes adjacent to the 100-year flood plain?
10. What are the criteria for being able to construct a new home with a basement in the 100-year flood plain?
11. Can I make improvements to my existing home in the flood plain?
12. What is compensatory storage?
13. How can I find out if my property is located within the flood plain?