10 CFR § 434.503 - Prototype building procedure.

---
identifier: "/us/cfr/t10/s434.503"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "10 CFR § 434.503 - Prototype building procedure."
title_number: 10
title_name: "Energy"
section_number: "434.503"
section_name: "Prototype building procedure."
chapter_name: "DEPARTMENT OF ENERGY"
subchapter_number: "D"
subchapter_name: "ENERGY CONSERVATION"
part_number: "434"
part_name: "ENERGY CODE FOR NEW FEDERAL COMMERCIAL AND MULTI-FAMILY HIGH 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: "65 FR 60012, Oct. 6, 2000, unless otherwise noted."
cfr_part: "434"
---


# 434.503 Prototype building procedure.

503.1 The Prototype Building procedure shall be used for all building types listed below. For mixed-use buildings the Energy Cost Budget is derived by allocating the floor space of each building type within the floor space of the prototype building. For buildings not listed below, the Reference Building procedure of § 434.505 shall be used. Prototype buildings include:

(a) Assembly;

(b) Office (Business);

(c) Retail (Mercantile);

(d) Warehouse (Storage);

(e) School (Educational);

(f) Hotel/Motel;

(g) Restaurant;

(h) Health/Institutional; and

(i) Multi-Family.