Appendix B — SUPPLEMENTARY ACCESSIBILITY REQUIREMENTS FOR EXISTING BUILDINGS AND FACILITIES
B103 Dwelling Units and Sleeping Units — 2025 California Existing Building Code
California Existing Building Code (Title 24, Part 10) · 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 Existing Building Code (Title 24, Part 10) § B103 · Effective January 1, 2026 · Official source: Building Standards Commission
B103.1 Communication features.¶
[BE] B103.1 Communication features. Where dwelling units and sleeping units are altered or added, the requirements of Section E104.2 of the California Building Code shall apply only to the units being altered or added until the number of units with accessible communication features complies with the minimum number required for new construction.
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