Chapter 6 — CLASSIFICATION OF WORK
Section 604 — ALTERATION—LEVEL 3
2025 California Existing Building Code (Title 24, Part 10) · 2025 edition · ingested 2026-07-07 · California
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604.1 Scope. ¶
604.1 Scope. Level 3 alterations apply where the work area exceeds 50 percent of the building area.
604.2 Application. ¶
604.2 Application. Level 3 alterations shall comply with the provisions of Chapters 7 and 8 for Level 1 and 2 alterations, respectively, as well as the provisions of Chapter 9.