10 CFR § 435.506 - Selecting a life cycle effective proposed building design.

---
identifier: "/us/cfr/t10/s435.506"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "10 CFR § 435.506 - Selecting a life cycle effective proposed building design."
title_number: 10
title_name: "Energy"
section_number: "435.506"
section_name: "Selecting a life cycle effective proposed building design."
chapter_name: "DEPARTMENT OF ENERGY"
subchapter_number: "D"
subchapter_name: "ENERGY CONSERVATION"
part_number: "435"
part_name: "ENERGY EFFICIENCY STANDARDS FOR THE DESIGN AND CONSTRUCTION OF NEW FEDERAL LOW-RISE RESIDENTIAL BUILDINGS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 6831-6832; 6834-6836; 42 U.S.C. 8253-54; 42 U.S.C. 7101"
regulatory_source: "53 FR 32545, Aug. 25, 1988, unless otherwise noted."
cfr_part: "435"
---


# 435.506 Selecting a life cycle effective proposed building design.

In selecting between or among proposed building designs which comply with the applicable energy consumption goal under this part, each Federal agency shall select the design which, in comparison to the applicable COSTSAFR prototype, has the highest Net Savings or lowest total life cycle costs calculated in compliance with subpart A of 10 CFR part 436.

[56 FR 3773, Jan. 31, 1991, redesignated at 79 FR 61571, Oct. 14, 2014]