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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 10
Chapter II
Part 435
Subpart E - Subpart E—Mandatory Energy Efficiency Standards for Federal Residential Buildings
§ 435.500 - Purpose.
§ 435.501 - Scope.
§ 435.502 - Definitions.
§ 435.503 - Requirements for the design of a Federal residential building.
§ 435.504 - The COSTSAFR Program.
§ 435.505 - Alternative compliance procedure.
§ 435.506 - Selecting a life cycle effective proposed building design.
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