Building Safety in Alameda County, CA (2026)

California Health & Safety Code § 17920.10(a)

(a) Any building or portion thereof including any dwelling unit, guestroom, or suite of rooms, or portion thereof, or the premises on which it is located, is deemed to be in violation of this part as to any portion that contains lead hazards. For purposes of this part, "lead hazards" means deteriorated lead-based paint, lead-contaminated dust, lead-contaminated soil, or disturbing lead-based pa...

Alameda County Code § 17.08.110

In Castro Valley only (areas within the Castro Valley Urbanized Area) the maximum floor area ratio for a one-family dwelling shall be as follows: At 5,000 s.f.: 0.5 FAR (2,500 s.f.), SDR required to exceed Max s.f. 5,001-9,999 s.f.: 0.3 FAR for every s.f. of lot area above 5,000, plus 2,500 s.f. (3,500 s.f. max). 10,000-20,000 s.f.: 0.40 or 4,500 s.f., whichever is less. 20,000+ s.f.: 0.10 FAR,...

Alameda County Code § 15.08.010

The County of Alameda adopts the 2025 California Building Code (CA Title 24, Part 2, Volumes 1 and 2) ... the 2025 California Green Building Standards Code CALGreen (CA Title 24, Part 11), the 2025 California Existing Building Code (CA Title 24, Part 10) and the 2025 California Historical Building Code (CA Title 24, Part 8) (collectively the "Codes") ... modified by the additions, deletions, an...

Alameda County Code § 15.08.060 (CBC § 105.2)

105.2 Work exempt from permit [BID][Flood]. Exemptions from permit requirements of this code shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of this code or any other laws or ordinances of the County. Permits shall not be required for the following: (Note: Exemptions below must comply with AC Section 15.08.300 and with AC Chapter 1...

Alameda County Code § 15.12.010

The County of Alameda adopts the 2025 California Electrical Code (CA Title 24, Part 3) as compiled and published by the International Code Council, modified by the California Building Standards Commission, and modified by the additions, deletions, and amendments set forth in this Chapter. The 2025 California Electrical Code (CA Title 24, Part 3) is incorporated by reference into this Chapter, w...

Alameda County Code § 15.20.010

The County of Alameda adopts 2025 California Plumbing Code (CA Title 24, Part 5) as compiled and published by the International Code Council, modified by the California Building Standards Commission, and modified by the additions, deletions, and amendments set forth in this Chapter. The 2025 California Plumbing Code (CA Title 24, Part 5) is incorporated by reference into this Chapter, which sha...

Alameda County Code § 15.08.100 (CBC § 110.7)

A reinspection fee may be assessed, based on the established fee schedule, when inspection is called for but is not complete or when corrections called for are not made. This Section 110.7 is not to be interpreted as requiring reinspection fees the first time a job is rejected for failure to comply with the requirements of this code, but as controlling the practice of calling for inspections...