What landed in the January 2026 Title 24 errata
Seven of the ten code books got an errata. Most of it is housekeeping — a few items move real review logic.
Verified. Every item below has been checked against the primary sources — the BSC's errata pages and the January 2026 errata stamps on the ICC-hosted books.
Which books changed
Seven of the ten ICC-hosted books carry the January 2026 Errata stamp:
- California Building Code (CBC)
- California Residential Code (CRC)
- California Electrical Code
- California Wildland-Urban Interface Code
- California Fire Code
- California Existing Building Code
- CALGreen
Three did not change: the Administrative Code, the Historical Building Code, and the Referenced Standards Code.
The housekeeping (most of it)
The bulk of any errata is exactly what the name says — typos, broken cross-references, and standard-year bumps. They sound trivial and usually are. Two examples from this batch:
- Patio covers — the ultimate-design-wind-speed map for patio covers and screen enclosures (CRC Appendix BF, Figure BF106.4.1) was replaced with the corrected map from the 2024 IRC errata. A figure swap on paper — except a wind speed read off the wrong map becomes the wrong design load on the plan.
- CALGreen's water-use worksheet (Chapter 8, Worksheet WS-2, footnote 4) corrected a faucet flow figure from 35 gpm to 0.35 gpm — a hundred-fold typo. Anyone who carried the printed number into a compliance form was certifying an impossible value.
The reason we read every one: a copy-paste error in a single section can flip the legal meaning of a requirement. "Housekeeping" is where the sneaky ones hide.
The items that actually move review logic
- ADU fire sprinklers (CRC R309.2). The exemption that lived in the Government Code is now restated in the Residential Code. → Read the full breakdown.
- Sections that moved. A cluster of renumberings means citations that were correct in December now point at the wrong section. → The full renumber map.
How we handle it
When a book's errata stamp moves, CrossBeam maps the changed sections to every skill that cites them, drafts a proposed update per skill, and routes anything substantive to a human. Nothing auto-applies. In the January 2026 cycle that pass reviewed ~109 skills and surfaced two real items a person needed to decide — exactly the signal-to-noise we want.