Building Science Resource Library
The Building Science Resource Library contains all of FEMA’s hazard-specific guidance that focuses on creating hazard-resistant communities.
You can search for a document by its title, or filter the collection to browse by:
- Topic: High winds, flood, earthquake, etc.
- Document Type: Brochure, report, fact sheet, infographic, etc.
- Audience: Building professionals & engineers, individuals & homeowners, teachers & kids, etc.
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This publication presents a range of flood protection measures available as alternatives to traditional structural elevation for homeowners whose residences meet both of the following conditions:
1 - The residences are existing buildings. This publication is not intended to address construction of new buildings in floodprone areas as these structures should be sufficiently elevated and built in conformance with NFIP and local floodplain management regulations.
2 - The residences are not Substantially Damaged or Substantially Improved, meaning that the buildings have not sustained damage or undergone improvement (i.e., reconstruction, rehabilitation, addition) where the cost of the damage or improvement exceeds 50 percent of the market value of the building before the damage occurred or improvement began. As with new construction, Substantially Damaged or Substantially Improved structures must be re-built in conformance with NFIP and local floodplain management regulations.