Every change in the January 2026 Title 24 errata — all 118, in one place
118 section-level changes across 10 code books, extracted from the BSC's buff pages and Information Bulletin 26-01.
Verified. Every row below was extracted from the primary sources by our automated code monitor, independently fact-checked against the same sources by a second verification pass, and read by a human editor before this badge went on.
The short version: the January 1, 2026 errata to the 2025 California Building Standards Code (Title 24) touched 9 of the 12 Parts — 10 code books, counting both volumes of the Building Code — for a total of 118 section-level changes. The Building Standards Commission announced the batch in Information Bulletin 26-01 (published March 3, 2026), issued as buff-colored replacement pages effective January 1, 2026, the same day the 2025 edition took effect. This page lists every one of them, by Part, in source order.
How to read this page
- These are errata — corrections to the printed 2025 edition, not new rulemaking. Most fix typos, broken cross-references, and classifications California never adopted. But "housekeeping" is where the sneaky ones hide: a renumbered section breaks every checklist that cites it, and a corrected table value can be safety-relevant. We flag the ones that move real review logic under Worth your attention in each section.
- What's not here: Part 7 (California Wildland-Urban Interface Code) received a separate Emergency Supplement, not an erratum — different instrument, different page. Parts 1 (Administrative), 8 (Historical Building), and 12 (Referenced Standards) have no 2025-edition errata.
- Sourcing: we pulled the buff-page errata PDFs directly from BSC, IAPMO, and ICC and parsed each book's History Note Appendix. Three books (CBC Volume 1, CBC Volume 2, and the Fire Code) are ICC-hosted PDFs that block automated readers or exceed read limits; their lists come from BSC IB 26-01's own section-level enumeration — still a primary source — and each affected section below says so.
- How we count: our monitor ran twice against this batch (June 4 and June 5, 2026) and we publish the reconciled union. One change = one identifiable section, table, figure, or definition the buff pages alter. Catch-all corrections a book describes only as "miscellaneous editorial fixes throughout" are noted in that book's intro instead of counted as rows — which is why a raw extraction can reasonably land anywhere from 116 to 121 on this batch. The 118 below is the deduplicated, section-identifiable set.
| Part | Code book | Changes |
|---|---|---|
| Part 2, Vol. 1 | California Building Code, Volume 1 | 21 |
| Part 2, Vol. 2 | California Building Code, Volume 2 | 10 |
| Part 2.5 | California Residential Code | 14 |
| Part 3 | California Electrical Code | 19 |
| Part 4 | California Mechanical Code | 3 |
| Part 5 | California Plumbing Code | 4 |
| Part 6 | California Energy Code | 4 |
| Part 9 | California Fire Code | 26 |
| Part 10 | California Existing Building Code | 11 |
| Part 11 | California Green Building Standards Code (CALGreen) | 6 |
| Total | 118 |
California Building Code, Volume 1 (Part 2, Vol. 1) — 21 changes
Volume 1 of the California Building Code drew non-substantive corrections spread across Chapters 1, 2, 4, 5, 7, 9, 10, 12, 15 and the Matrix Adoption Tables. The bulk of the work removes Group I-2 Condition 1/2 and Group R-4.1 classifications that California does not use, deletes or trims exceptions tied to them, and fixes cross-references so the chapter correlates with Part 9. A handful of edits do real work: a wind/tornado risk-category revision, a new medical-gas labeling sentence, and a corrected wildfire-zone roofing pointer. Source: 2025 California Building Code, Part 2, Vol. 1 errata PDF, effective January 1, 2026. Note: the actual errata PDF is ICC-hosted and could not be fetched directly, so this list is sourced from BSC Information Bulletin 26-01 (pages 2-3) rather than the PDF itself.
| Section | What changed |
|---|---|
| Section 107.2.4 (Exterior wall envelope) | "Exterior wall envelope" reworded to "exterior wall assembly." |
| Section 110.3.9 (Energy efficiency inspections) | Required inspections clarified to be specific to building thermal envelope insulation products. |
| Section 202 (Definitions) | Removed "Accessible Unit," "Type A Unit," "Type B Unit" dwellings; revised "Essential Facilities," "Nominal Loads," and "Risk Category" to add Tornado events. |
| Section 403.4.8.1 (Equipment room) | Group I-2 Condition 2 removed from the Exceptions. |
| Section 404.5 (Smoke control) | Group I-2 Condition 2 removed from the Exceptions. |
| Section 407.2.5 (Nursing home housing units) | Condition 1 removed. |
| Section 407.2.6 (Nursing home cooking facilities) | Condition 1 removed. |
| Section 407.5.1 (Smoke compartment size) | Exceptions removed. |
| Section 407.9 (Automatic smoke detection, Group I-2) | Condition 2 and Exceptions 1 and 2 removed. |
| Section 427.2 (Interior supply location) | New sentence added requiring rooms containing medical gases to be labeled per NFPA 99. |
| Section 508.3.1.2 | Provision about Group I-2, Condition 2 occupancies removed. |
| Section 710.5.3 (Pass-through openings in Group I-2) | Condition 2 removed. |
| Section 709.3 (Fire-resistance rating) | The Exception is removed. |
| Section 903.3.1.3 (NFPA 13D sprinkler systems; Group R-4) | Condition 1 removed. |
| Section 907.2.11.2 (Groups R-2, R-2.1, R-2.2, R-3, R-3.1, R-4) | Occupancy Group R-4.1 removed. |
| Section 907.2.16 (Aerosol storage uses) | Phrase added: aerosol cooking spray or plastic aerosol 3 products need an approved manual fire alarm system where the California Fire Code requires it. |
| Section 907.5.2.1 (Audible alarms), Exception 1 | Group I-2 Condition 2 removed from the occupancy classification. |
| Section 1010.2.4 (Locks and latches), No. 5 | Single exit doors may use manual bolts if openable from inside without key or tool. |
| Section 1013.6.3 (Power source) | Group I-2 Condition 2 removed from exit illumination power requirements. |
| Table 1202.3.1 (IECC vs California Energy Code Climate Zone Comparison) | California Zone 7 added to the row for IECC Zone 3 (marine). |
| Section 1505.1.1 (Roofing requirements within FHSZ/WUI) | Pointer to CBC "Section 705A" corrected to "Chapter 5 of the California Wildland-Urban Interface Code." |
Worth your attention: A few of these move real review logic. Section 202 revises "Risk Category," "Essential Facilities," and "Nominal Loads" to add Tornado events — a load-relevant definition change, not housekeeping. Section 427.2 adds a brand-new requirement that rooms with medical gases be labeled per NFPA 99. Section 1010.2.4 No. 5 newly allows manual bolts on single exit doors provided they open from inside without a key or tool — a hardware allowance worth checking on egress review. Section 1505.1.1 repoints a wildfire-zone roofing reference from CBC "Section 705A" to Chapter 5 of the California Wildland-Urban Interface Code, so any FHSZ/WUI checklist citing 705A now points at the wrong document. Section 1505.1.1 reference is renumbered, but a checklist that still says "705A" now sends you to the wrong code entirely.
California Building Code, Volume 2 (Part 2, Vol. 2) — 10 changes
Volume 2 of the California Building Code picked up renumbering and reference corrections across Chapters 16/16A, 19A, 21, 22, 30, and 35 to align with the 2024 IBC errata, plus a pair of standards changes in Chapter 35 (one deleted, one added). Most of it is editorial, but the photovoltaic and open-frame roof sections were renumbered outright. Source: BSC reports this list came from Information Bulletin 26-01 (p.3) rather than the errata PDF itself, which is ICC-hosted and was over the fetch limit / curl-blocked; the errata PDF is at https://www.iccsafe.org/wp-content/uploads/errata_central/2025-California-Building-Code-Part-2-Vol-2-Errata-eff.-January-2026.pdf, effective January 1, 2026.
| Section | What changed |
|---|---|
| Tables 1604.5 and 1604A.5 | "Condition 2" removed from "Group I-2 occupancies" in the Risk Category IV description. |
| Sections 1607.14.3 and 1607A.14.3 (photovoltaic panel systems) | Renumbered to Sections 1607.22 and 1607A.22 (with subsections) to match the 2024 IBC errata. |
| Section 1607A.14.4 (Uncovered open-frame roof structures) | Renumbered to Section 1607A.23 as an independent subsection of 1607A. |
| Sections 1609.3 and 1609A.3 | "design" removed from the title to match the 2024 IBC errata. |
| Chapter 19A (Concrete) user notes | Corrected to state the chapter applies specifically to reinforced concrete. |
| Section 2108.1 | The exception is deleted as an amendment carried forward from prior rulemaking cycles. |
| Sections 2203.1 and 2203A.1 (General) | Term "manufacture" deleted and replaced with "fabrication." |
| Sections 2213.1 and 2213A.1 | Revised to clarify the standard applies specifically to material handling structures. |
| Section 3006 | In the title, "opening" replaced with "door" (now "elevator lobbies and hoistway door protection"). |
| Chapter 35 (Referenced standards) | ICC-ES AC 106-24 deleted (no longer published); ICC/NSSA 500-2023 added (erroneously omitted in first printing). |
Worth your attention: Two renumbered sections matter if you cite them. The photovoltaic panel system provisions at 1607.14.3 / 1607A.14.3 are now 1607.22 / 1607A.22, and the uncovered open-frame roof structure provisions at 1607A.14.4 are now 1607A.23 — per the source, both moves track the 2024 IBC errata, so any checklist or note still pointing at the old numbers now points at the wrong place. The Chapter 35 standards swap is also load-bearing for reference-checking: ICC-ES AC 106-24 is gone (no longer published) and ICC/NSSA 500-2023 was added back after being omitted from the first printing.
California Residential Code (Part 2.5) — 14 changes
Part 2.5 picked up a batch of housekeeping corrections spread across the Matrix Adoption Tables and Chapters 2, 3, 6, 7, 8, 44 plus Appendices BF, CG, and CI: replaced map figures, energy-code reference pointers swapped in for outdated IECC/model-code section numbers, climate-zone label corrections, and refreshed statutory reprints. Most are non-substantive cleanup, but a few touch references that plan reviewers actually cite. Source: 2025 California Residential Code (Part 2.5) Errata, effective January 1, 2026; the change list below was taken from the actual errata PDF, corroborated by the History Note Appendix (HIST-1) and BSC IB 26-01.
| Section | What changed |
|---|---|
| Chapter 2, R202 ACCESSORY DWELLING UNIT | ADU definition carries a change-bar correction referencing Government Code Section 66313. |
| Figure R305.4 (Termite Infestation Probability Map) | Map replaced with the correct one per the 2024 IRC Errata posted 09/13/2024. |
| Section R306.2.1 (Elevation requirements) | Last sentence of sub-item 5.2.5 split out into a new sub-item 5.2.6. |
| Section R309.2, Exception 2 (ADU fire sprinklers) | The Accessory Dwelling Unit sprinkler exception carries a change bar — ADU defined per Government Code Section 66313, with the conditions for not requiring sprinklers (errata PDF p. 3-41). |
| Section R702.7.2 (Vapor retarder installation) | Pointer to Section N1102.5.1.1 replaced with the California Energy Code. |
| Table R702.7.3 (IECC vs California Energy Code Climate Zone Comparison) | California Zone 7 added to the comparison column on the IECC Zone 3 (marine) row. |
| Section R703.2 (Water-resistive barrier) | Pointer to Section N1102.5.1.1 replaced with the California Energy Code. |
| Section R703.7.3.1 (Dry climates) | "Dry (B)" replaced with "other than IECC 3 (marine) and 4 (marine)"; reference to Section R702.7.3 deleted. |
| Section R703.7.3.2 (Moist or marine climates) | "Moist (A) or Marine (C)" replaced with "IECC 3 (marine) and 4 (marine)"; reference to Section R702.7.3 deleted. |
| Table R806.5 (Insulation for Condensation Control), footnote a | Pointer to Section N1102.5.1.1 replaced with the California Energy Code. |
| Chapter 44 (Referenced Standards) | Referenced-standards corrections, including amended ASTM E2886 / ASTM E2957 sections and a change bar on ANSI/AWC NDS-2024 (errata PDF pp. 44-13 to 44-14). |
| Appendix BF, Figure BF106.4.1 (Ultimate Design Wind Speeds for Patio Covers and Screen Enclosures) | Map replaced with the correct one per the 2024 IRC Errata posted 10/04/2024. |
| Appendix CG, Section CG101.2 (System requirements) | Referenced standard ANSI/CAN/IAPMO/ISO CG106.1 updated to ANSI/CAN/IAPMO/ISO 30500. |
| Appendix CI (Swimming Pool Safety Act, HSC 115920-115929) | Statutory reprint updated per BSC-01-24-CWoRE to reflect AB 2866 and SB 552 (2024), effective Jan 1, 2025; affects §115921(d), §115922, §115925, §115926, §115928 et al. |
Worth your attention: A handful of these move real review logic. R309.2 Exception 2 is the big one: the ADU fire-sprinkler exemption that has long lived in the Government Code is now restated in the Residential Code itself — we wrote up the full breakdown and verified it against the live code text. The R202 ADU definition now references Government Code Section 66313 — relevant for anyone citing the ADU statutory hook. R703.7.3.1 and R703.7.3.2 redefine their climate triggers (from the old Dry/Moist/Marine labels to explicit "IECC 3 (marine) and 4 (marine)" language) and delete the cross-reference to Section R702.7.3, which changes how the dry-versus-marine water-resistive-barrier rules are scoped. R306.2.1 renumbers content by splitting sub-item 5.2.5 into a new 5.2.6, so a checklist citing 5.2.5 may now point at the wrong sub-item. Appendix CI is a substantive statutory refresh of the Swimming Pool Safety Act per AB 2866 and SB 552, listing specific affected sections. And the several pointer swaps (R702.7.2, R703.2, Table R806.5) redirect vapor-retarder and barrier requirements from former model-code section N1102.5.1.1 to the California Energy Code, so the governing reference now lives in a different code.
California Electrical Code (Part 3) — 19 changes
Part 3 (the California Electrical Code) got an editorial errata: capitalization fixes, corrected cross-references to other code parts, agency-banner and margin-marking cleanups, and a heavy round of OSHPD adoption corrections concentrated in Article 517 (health care facilities). Two corrections touch references people actually cite — the Accessory Dwelling Unit Government Code reference and several California Building Code / California Energy Code pointers. Source: BSC-hosted errata PDF Errta-01012026-Pt3-CEC-locked.pdf, effective January 1, 2026.
| Section | What changed |
|---|---|
| Section 89.111.2.1.3 | Capitalized all instances of "State Fire Marshal." |
| Section 89.111.3 | Corrected an incorrect reference to the California Building Code. |
| Article 100 Matrix Adoption Table | Moved adoption from OSHPD 3 to OSHPD 2 for the "Life-Saving Equipment" and "Oxygen-Generating Devices" definitions. |
| Article 100 Definitions (Accessory Dwelling Unit) | Corrected an inaccurate Government Code reference section in the Accessory Dwelling Unit definition. |
| Figure 315.60(D)(3) Note | Corrected an inaccurate section pointer in the Note. |
| Section 422.3(A) and (B) | Corrected errors in section titles and in references to the California Energy Code. |
| Article 517 Matrix Adoption Table | Removed blank rows, moved OSHPD 1, 4, 5 adoption from 517.1(B) to 517.1(C), and identified twelve listed subsections as new state amendments. |
| Section 517.1(C) | Corrected margin marking inaccuracies. |
| Section 517.18(B)(2) | Flagged removal of a previous Exception and corrected margin marking inaccuracies. |
| Section 517.29(A.1) | Corrected an editorial error in the agency banner. |
| Section 517.34(7) | Corrected the agency banner for subsections j and k and a wrong California Building Code reference in subsection l. |
| Section 517.35(B)(1) | Corrected a formatting error in the Exception. |
| Section 517.42(E) | Added missing model code language. |
| Section 517.44(A) | Corrected model code and state adoption language in (1)(a) and fixed a typo in (7). |
| Section 551.4(A) | Corrected a code reference in the model code language. |
| Section 705.20(7) | Added OSHPD 6 to the agency banner. |
| Section 708.1 | Corrected formatting in the agency banner. |
| Informative Annex C | Corrected page-number references. |
| Index (Appliances entry) | Corrected an inaccuracy in the Appliances listing specific to Section 422.3(A). |
Worth your attention: A few rows move review logic beyond cosmetics. The Article 100 Definitions (Accessory Dwelling Unit) row corrects an inaccurate Government Code reference in the ADU definition — anyone citing that statute for ADU electrical scope should pull the corrected pointer. Section 89.111.3 and Section 517.34(7) both fix wrong California Building Code references, and Section 422.3(A) and (B) corrects references to the California Energy Code — cross-citations worth re-checking. The Article 517 Matrix Adoption Table row is the heaviest: it identifies twelve specific health-care subsections (517.20(A)(3) through 517.44(A)(6) Exception 2) as new state amendments and moves OSHPD 1, 4, 5 adoption from 517.1(B) to 517.1(C). Section 517.18(B)(2) also flags removal of a previous Exception.
California Mechanical Code (Part 4) — 3 changes
The California Mechanical Code erratum is small and mostly housekeeping: it fixes editorial errors in the Preface and makes corrections in Chapters 2 and 4 plus one table in Chapter 11. Two of the three changes touch things a reviewer actually relies on — corrected refrigerant safety values and a fixed ADU Government Code citation. Source: 2025 CMC errata packet (PDF), effective January 1, 2026; the change list was built from the actual errata PDF, corroborated by the History Note Appendix and BSC IB 26-01.
| Section | What changed |
|---|---|
| Table 1102.3 (Refrigerant Groups, Properties, and Allowable Quantities) | RCL and LFL values (lb/Mcf) revised for Safety Group A2L refrigerant blends R-444A through R-455A, correcting errors carried in from 2019 ASHRAE 34 data via the 2024 UMC; aligns with IAPMO TIA UMC (003-24). |
| Chapter 2 (Accessory Dwelling Unit definition) | Corrected the Government Code statute in the ADU definition to Government Code Section 66313. |
| Chapter 4, Table 4A footnote d | Changed to reflect the correct section number in Chapter 4. |
Worth your attention: Table 1102.3 revises the RCL and LFL quantity values for A2L refrigerant blends (R-444A through R-455A) — these are safety-relevant numbers that drive allowable refrigerant quantities, and the prior values were wrong (carried in from 2019 ASHRAE 34 data via the 2024 UMC). The Chapter 2 row corrects the Government Code citation in the ADU definition to Section 66313, so anyone citing the old statute in an ADU mechanical review is pointing at the wrong reference.
California Plumbing Code (Part 5) — 4 changes
The Part 5 erratum is a small batch of editorial cleanups touching Chapters 2, 3, 4, 15, and 16: a corrected Government Code citation in the ADU provisions, a deleted reference to a model accessibility standard, an amendment relocated into a table footnote, and fixed printing errors in a table. Per the History Note Appendix, the changes are scattered miscellaneous corrections rather than substantive rule changes. Source: 2025-cpc-errata-packet.pdf, effective January 1, 2026.
| Section | What changed |
|---|---|
| Chapter 2 (Accessory Dwelling Unit) and Section 311.1 (General) | Corrected the referenced Government Code section to Government Code Section 66313. |
| Section 403.2 | Reference to ICC A117.1 deleted. |
| Table 422.1 | A BSC and DSA-SS amendment relocated to footnote 9. |
| Table 4-2 | Printing errors corrected. |
Worth your attention: Two rows move review logic. The Chapter 2 / Section 311.1 fix repoints the ADU definition at Government Code Section 66313 — if your ADU intake or checklist quotes the old Government Code citation, it now points at the wrong statute. And Section 403.2 deletes the reference to ICC A117.1; a checklist that still cites ICC A117.1 from this section is citing a pointer the code no longer carries here.
California Energy Code (Part 6) — 4 changes
The Part 6 erratum is a tight set of four corrections concentrated in the front-matter and tables: a fixed section pointer in the Application of Standards table, a cleaned-up definition section, and two repairs to Battery Energy Storage System (BESS) capacity factors in the prescriptive tables. None of it rewrites a requirement, but two of the items change actual numeric inputs. Source: 2025 California Energy Code (Part 6) Errata, effective January 1, 2026.
| Section | What changed |
|---|---|
| Table 100.0-A (Application of Standards) | Corrected the referenced section number for prescriptive Solar PV and BESS application in Nonresidential buildings and Hotels/Motels. |
| Section 100.1 (Definitions and Rules of Construction) | GLAZED DOOR definition corrected and moved under FENESTRATION; OSHPD definition updated to the revised name, Office of Statewide Hospital Planning and Development. |
| Table 140.10-B (BESS Capacity Factors) | BESS capacity factors fixed for the Retail/Grocery and Warehouse building types in CZ1 and CZ3. |
| Table 170.2-V (BESS Capacity Factors) | BESS capacity factor fixed for the Warehouse building type in CZ1. |
Worth your attention: Tables 140.10-B and 170.2-V are not editorial — they correct the actual BESS capacity-factor values that feed prescriptive compliance for Retail/Grocery and Warehouse occupancies in CZ1 and CZ3, so anyone who ran those numbers off the first printing should re-check them. Table 100.0-A changes which section a reviewer is pointed to for Solar PV and BESS application in nonresidential and hotel/motel buildings, so a checklist that cites the old number now points at the wrong place.
California Fire Code (Part 9) — 26 changes
The California Fire Code's January 2026 errata is almost entirely non-substantive housekeeping: the OSHPD office-name change, removal of model-code occupancy classifications California does not use (Group I-2 Conditions 1/2, Group I-1, Group R-4.1, Group R-2.1 Condition 2), and reference pointers re-correlated with CBC Part 2 Volume 1. A handful of entries touch real numbers and citations. One caution on sourcing: per errata_metadata.source_used, this list was compiled from BSC Information Bulletin 26-01 (pp. 6-7) rather than the errata PDF itself, because the ICC-hosted PDF is 134 pages and curl-blocked. Source: 2025 California Fire Code Part 9 Errata, effective January 1, 2026.
| Section | What changed |
|---|---|
| Chapters 1, 2, 10, 11 (OSHPD references) | "Office of Statewide Health Planning and Development" changed to "Office of Statewide Hospital Planning and Development." |
| Section 105.5.1 (Additive manufacturing) | Reference pointer to CBC Section 4103.3 corrected to CBC Section 319.3 (industrial additive manufacturing). |
| Table 105.5.22 (Permit Amounts For Hazardous Materials), Footnotes a and b | Footnotes referring to Note k corrected to Note j. |
| Section 202 (Definitions) - Higher Education Laboratory / Laboratory Suite | Model-code defined terms removed (a different classification is used in California). |
| Section 202 (Definitions) - WILDLAND-URBAN INTERFACE AREA (WUI) [SFM] | Reference to CBC Chapter 7A, Section 702A.2 corrected to the California Wildland-Urban Interface Code (Chapter 7A removed from CBC). |
| Section 203.3 (Business Group B) | "Higher education laboratories" removed from listed occupancies. |
| Section 203.3.2 (Ambulatory care facilities) | California amendment on Group C (CAMPS, ORGANIZED) removed as duplicative with Section 203.13. |
| Section 203.3.3 (Higher Education Laboratories) | Removed in its entirety. |
| Section 203.7.2.1 and subsections | Provisions addressing Group I-2 occupancy Conditions 1 and 2 removed. |
| Sections 203.9.4.1 and 203.9.4.2 | Provisions addressing Residential Group R-4, Conditions 1 and 2 removed. |
| Chapter 4 (Group R-2.1 Condition 2) | Group R-2.1 Condition 2 removed from several sections where it was missed in rulemaking (not used in California). |
| Section 603.6.4 (Grounding) | Language added clarifying portable appliances shall be required to connect to an equipment grounding conductor. |
| Section 603.5.1.1 (Listing in Group I-2 occupancies and ambulatory care facilities) | Conditions 1 and 2 removed from Items 1 and 2. |
| Sections 805.2.1.1 and 807.4 (Chapter 8) | Condition 1 and Group I-1 removed. |
| Section 808.1 | Group I-1 replaced with Group R-2.1. |
| Section 903.3.1.2.3 (Attics), Item 4 | Provision about Group R-4, Condition 2 occupancy removed. |
| Section 903.3.1.3 (NFPA 13D sprinkler systems, Group R-4) | Condition 1 removed. |
| Section 906.1 | Exceptions 2 and 3 in Item 1 removed; Item 2 revised to remove Group I-1 and Condition 1. |
| Sections 907.5.2.1 and 907.5.2.3 | All references to Condition 2 removed. |
| Section 1010.2.3 | Reference to the International Swimming Pool and Spa Code corrected to the California Building Code. |
| Section 1010.2.12.1, Item 5, Exception 2 | Group I-1 and Condition 1 removed. |
| Section 1025.1 | Group I-1 occupancy removed. |
| Chapter 11 (Conditions 1/2 and Group I-1) | References to Conditions 1 and 2 and Group I-1 removed. |
| Section 1104.8 (Forces to unlatch and open doors) | First sentence "Forces shall be applied to the latch side" removed. |
| Table 5003.1.1(5) (Hazardous Materials Exemptions) | Reference to Section 416 for material classification (flammable/combustible liquids and gases) changed to Chapter 24 in Column 3. |
| Table 5003.11.2 (Maximum Allowable Quantity) | Value of 39,000 ft3 for Category 1B Gaseous corrected to 390,000 ft3. |
Worth your attention: A few of these move past pure formatting. Table 5003.11.2 changes a maximum allowable quantity from 39,000 ft3 to 390,000 ft3 for Category 1B Gaseous — a tenfold value correction that directly affects hazardous-materials thresholds. Table 5003.1.1(5) redirects material classification for flammable/combustible liquids and gases from Section 416 to Chapter 24, so any checklist citing Section 416 here now points to the wrong place. Section 1104.8 removes the "Forces shall be applied to the latch side" sentence, changing how unlatch/open door forces are stated. Section 105.5.1 and Section 1010.2.3 are renumber/cross-reference fixes (CBC 4103.3 → 319.3; ISPSC → CBC) that anyone citing the old pointers will need to update. And the Section 202 WUI [SFM] definition now routes through the California Wildland-Urban Interface Code instead of the removed CBC Chapter 7A — relevant for any fire-hazard-severity-zone review.
California Existing Building Code (Part 10) — 11 changes
Part 10 picked up a batch of editorial and reference corrections spread across Chapters 1, 2, 3, 3A, 5, 8, 13, 15, 16 and Appendix E — mostly the statewide OSHPD name change, corrected cross-references aligned to the 2024 IEBC Errata, and one numeric fix. Most are housekeeping, but a few touch values and references that reviewers actually cite. Source: 2025 California Existing Building Code Part 10 Errata (eff. January 2026), effective January 1, 2026 (curator pulled the errata PDF directly, corroborated by the History Note Appendix and BSC IB 26-01).
| Section | What changed |
|---|---|
| Sections 1.1.3.2, 310A.1.2, and 311A.1.2 | Editorial update to the organization name "Office of Statewide Hospital Planning and Development (OSHPD)." |
| Sections 1.9.2.1.1 and 1.9.2.2.1 | Corrected reference to Section 1103.7 provided. |
| Section 202 (Accessory Dwelling Unit definition) | ADU definition updated with the correct reference to Government Code Section 66313. |
| Chapter 3 ("About this chapter" note) | Updated to indicate California Codes, not I-Codes. |
| Section 303.2.1 | Term "occupant capacity" updated to "design occupant capacity" per 2024 IEBC Errata. |
| Section 502.3 | Corrected reference to Section 502.4 provided per 2024 IEBC Errata. |
| Section 804.6.4 | Corrected reference to CBC Section 1010.2.8 provided per 2024 IEBC Errata. |
| Section 1305.2.2.2 | Editorial change deleting a comma per 2024 IEBC Errata. |
| Section 1504.1.4.1 | Panel thickness of 15/16 inch corrected to 5/16 inch per 2024 IEBC Errata. |
| Chapter 16 Matrix Adoption Table | Updated to include ASCE/SEI 41-2017. |
| Chapter 16 (Referenced standards) | Referenced sections in ASME A17.1, A17.3, and A18.1 deleted; several CBC-25 references corrected. |
Worth your attention: Section 202 corrects the Accessory Dwelling Unit definition's pointer to Government Code Section 66313 — relevant to anyone citing the ADU statute reference. Section 1504.1.4.1 changes a panel thickness from 15/16 inch to 5/16 inch, a numeric value worth re-checking against any standing notes. Sections 1.9.2.1.1/1.9.2.2.1 (now pointing to Section 1103.7), 502.3 (to Section 502.4), and 804.6.4 (to CBC Section 1010.2.8) fix cross-references reviewers cite, so checklists keyed to the old pointers will lead to the wrong section. The Chapter 16 Matrix Adoption Table now includes ASCE/SEI 41-2017, and several CBC-25 references plus ASME A17.1/A17.3/A18.1 referenced sections changed in the standards list.
California Green Building Standards Code, CALGreen (Part 11) — 6 changes
CALGreen's errata is almost entirely housekeeping: an editorial fix to the organization name "Office of Statewide Hospital Planning and Development (OSHPD)," a corrected Government Code reference in the ADU/JADU definitions, capitalization and punctuation cleanups, one worksheet value fix, and WUI references repointed to the California Wildland-Urban Interface Code. The corrections touch the Table of Contents, Matrix Adoption Tables, and Chapters 1, 2, 3, 4, 5, 8, A4, A5, and A6. Source: 2025 California Green Code Part 11 Errata, effective January 1, 2026 (the fetched errata PDF, corroborated by the BSC History Note Appendix HIST-1 and IB 26-01 p.8).
| Section | What changed |
|---|---|
| Chapters 1, 3 and A6 (OSHPD references) | Editorial changes to reflect the organization name "Office of Statewide Hospital Planning and Development (OSHPD)." |
| Chapter 2 (ACCESSORY DWELLING UNIT and JUNIOR ACCESSORY DWELLING UNIT) | Government Code reference corrected in both definitions to Government Code Section 66313. |
| Chapters 4, 5 and A4 (capitalization/punctuation) | Various capitalization and punctuation inconsistencies corrected. |
| Chapter 8, footnote 4 to WORKSHEET (WS-2) WATER USE REDUCTION | Corrected to require 0.35 gpm instead of 35 gpm; inconsistent terminology and punctuation corrected in various compliance forms. |
| Chapter A5 (WUI references and punctuation) | Punctuation/formatting corrected; references to CBC Chapter 7A provisions corrected to refer to the California Wildland-Urban Interface Code. |
| Chapter A6 (punctuation) | Various punctuation inconsistencies corrected. |
Worth your attention: Two rows move real review logic. The Chapter 8 WS-2 footnote fixes a flow value from "35 gpm" to "0.35 gpm" — a 100x difference on a water-use reduction worksheet, so anyone checking against the first printing was working from a wrong number. And the Chapter 2 ADU/JADU correction points both definitions at Government Code Section 66313, which matters for anyone citing the statute on an ADU or JADU. The rest is naming, capitalization, and punctuation.
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