Chapter 12 — INTERIOR ENVIRONMENT
Section 1203 — TEMPERATURE CONTROL
2025 California Building Code (Title 24, Part 2) · 2025 edition · ingested 2026-07-07 · California
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1203.1 Equipment and systems. ¶
1203.1 Equipment and systems. Interior spaces intended for human occupancy shall be provided with active or passive space heating systems capable of maintaining an indoor temperature of not less than 68°F (20°C) at a point 3 feet (914 mm) above the floor on the design heating day. Exceptions: 1. Space heating systems are not required for: 1.1. Interior spaces where the primary purpose of the space is not associated with human comfort. 1.2. Group F, H, S or U occupancies. 2. [HCD 1] For limited-density owner-built rural dwellings, a heating facility or appliance shall be installed in each…