2703 Lightning Protection Systems — 2025 California Building Code
California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-10-19 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Building Code (Title 24, Part 2) § 2703 · Effective January 1, 2026 · Official source: Building Standards Commission
2703.1 General.¶
Where provided, lightning protection systems shall comply with Sections 2703.2 through 2703.3.
2703.2 Installation.¶
Lightning protection systems shall be installed in accordance with NFPA 780 or UL 96A. UL 96A shall not be utilized for buildings used for the production, handling or storage of ammunition, explosives, flammable liquids, flammable gases or other explosive ingredients including dust.
2703.2.1 Surge protection. Where lightning protection systems are installed, surge protective devices shall also be installed in accordance with the California Electrical Code and either NFPA 780 or UL 96A, as applicable.
2703.3 Interconnection of systems.¶
All lightning protection systems on a building or structure shall be interconnected in accordance with NFPA 780 or UL 96A, as applicable.
CHAPTER 28 – MECHANICAL SYSTEMS
(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)
| Adopting agency | BSC | BSC-CG | SFM | HCD 1 | HCD 2 | HCD 1/AC | DSA AC | DSA SS | DSA SS/CC | OSHPD 1 | OSHPD 1R | OSHPD 2 | OSHPD 3 | OSHPD 4 | OSHPD 5 | OSHPD 6 | BSCC | DPH | AGR | DWR | CEC | CA | SL | SLC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Adopt entire chapter | ||||||||||||||||||||||||
| Adopt entire chapter as amended (amended sections listed below) | X | |||||||||||||||||||||||
| Adopt only those sections that are listed below | ||||||||||||||||||||||||
| Chapter / Section | ||||||||||||||||||||||||
| 2802 | X |
The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
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