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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FEMA P-259, Engineering Principles and Practices of Retrofitting Floodprone Residential Structures, Third Edition

The third edition of this document is intended to further aid homeowners in selecting and successfully executing a flood retrofit on their home. Engineering design and economic guidance on what constitutes feasible and cost-effective retrofitting measures for flood-prone residential and non-residential structures are presented. Elevation, relocation, dry floodproofing, wet floodproofing, and the use of levees and floodwalls to mitigate flood hazards are discussed. This edition was updated to be more user-friendly and concise, the overall length of the publication has been shortened.