Information Bulletins

Division of Codes & Standards

Information Bulletins are periodically issued by HCD to announce changes in law or regulations, or to provide clarification on Division-related topics. Due to the date of release, some links, fees, and contact information in the Information Bulletins below may be out-of-date.

If you have any questions regarding the Information Bulletin content or need up-to-date contact information, fees, or links, please contact the Division of Codes and Standards at CodesInquiries@hcd.ca.gov or call (800) 952-8356.

Subject	Programs	Number
New Occupational Licensing Examination Provider (PDF) Spanish Version (PDF)	OL	2025-01
Manufactured Housing Permit Requirements — Alterations or Conversions (PDF) Spanish Version (PDF)	CM MH MP SOP	2024-04
Registration and Titling Program—Business Customer Section (PDF)	RT	2024-03
Regulatory Fee Amendments—Employee Housing, Mobilehome Parks, Special Occupancy Parks, and Manufactured Housing (PDF)	EH MH MP SOP	2024-02
Assembly Bill 318 — Mobilehome Residency Law Protection Program (PDF)	MH MP RT SOP	2024-01
Local Ordinances, Amendments, & Reports (PDF)	SHL	2023-03
2022 California Building Standards Code SUPPLEMENT Effective July 1, 2024 (PDF)	CM FBH SPCM SHL	2023-02
Codes and Standards Online Services (PDF)	CM MH MP RT SOP SPCM	2023-01
Mobilehome Park and Special Occupancy Park Local Enforcement Agency Assumption Process (PDF) Spanish Version (PDF)	MP SOP	2022-12
Mobilehome and Special Occupancy Park Permit to Operate — Penalty Fee Waiver (PDF)	MP SOP	2022-10
Electrical Service Drops and Metering Equipment (PDF)	FBH SHL	2022-07
2022 California Building Standards Code, Effective January 1, 2023, Information for Factory-Built Housing, Commercial Modulars, and Special Purpose Commercial Modulars (PDF)	CM FBH SPCM SHL	2022-05
Construction or Alteration of Public Swimming Pools in Mobilehome and Special Occupancy Parks (PDF)	MP SOP	2022-03
Assembly Bill (AB) 362 Homeless Shelters Reporting Guidelines (PDF)	SHL	2022-02
Solar Energy Systems; Rescind Information Bulletin 2019-04; Restate Information Bulletin 2008-10 (PDF)	MP	2022-01
Register Your Mobilehome California Program Analysis (PDF)	RT	2021-08
New Mobilehome Park Maintenance Inspection Video (PDF)	MP SOP	2021-07
Revisions to Form HCD 433A (Rev. 03/21), Recording, Correcting and/or Reporting the Removal of a Manufactured Home, Mobilehome, or Commercial Modular from a Real Property Foundation System (PDF)	CM MH MP RT	2021-06
Mobilehome Residency Law Protection Program — Recreational Vehicles (PDF)	MH MP SOP	2021-05
Special Purpose Commercial Modular — Mobile Food Facilities (PDF)	MH SPCM	2021-04
2020 Legislative Changes (PDF)	MP SHL	2021-03
2019 California Building Standards Code SUPPLEMENT Effective July 1, 2021, Information for Factory-Built Housing, Commercial Modulars, and Special Purpose Commercial Modulars (PDF)	CM FBH SPCM SHL	2021-02
Emergency Housing Ordinances — Filing (PDF)	CM FBH SPCM SHL	2020-09
Notice of Changes to the Referenced California Building Standards Code Affecting Department-Approved Standard Plan Approvals (PDF)	MP SOP SPA	2020-07
California Building Standards — Use of Appendices and Informative Annexes (PDF)	CM FBH SPCM SHL	2020-06
Assembly Bill 338 — Manufactured Housing Smoke Alarms and Emergency Preparedness Plans (PDF)	MH MP SOP	2020-05
2019 Legislative Changes (PDF)	EH MH MP RT SHL	2020-03
California Energy Code Photovoltaic (Solar) Requirements and Manufactured Housing/Mobilehomes (PDF)	MH MP SOP	2020-01
2019 California Building Standards Code Effective Date January 1, 2020, including Factory-Built Housing, Commercial Modular, and Special Purpose Commercial Modular Information (PDF)	CM FBH MH SPCM SHL	2019-03
Recycled Water Supply Systems: Invalidation of HCD’s Amendments to the 2016 California Plumbing and 2016 Green Building Standards Codes, Parts 5 and 11, Title 24, California Code of Reg... (PDF)	FBH MH SHL	2019-02
2018 Legislative Changes (PDF)	MH MP RT SHL	2019-01
Emergency Housing — Permanent Adoption of Emergency Regulations Effective December 7, 2018 for 2016 California Building Code and 2016 California Residential Code (PDF)	CM FBH MH SHL	2018-05
Manufactured Housing Assembly Bill 1943 (Chapter 254, Statutes of 2018) (PDF)	MH MP SOP	2018-04
2016 California Building Standards Code SUPPLEMENT, Effective July 1, 2018, Information for Factory-Built Housing, Commercial Modulars, and Special Purpose Commercial Modulars (PDF)	CM FBH SPCM SHL	2018-02
Emergency Housing — Adoption of Emergency Regulations, Effective April 18, 2018 (PDF) Supplement — Emergency Housing — Adoption of Emergency Regulations, Effective through January 14, 2019 (PDF)	FBH MH SHL	2018-01
Accessibility in Special Occupancy Parks with Short-Term Rental or Leased Recreational Vehicles and Park Trailers (PDF) Reissued January 4, 2018	MP SOP	2017-04
Notice of Changes to the Referenced California Building Standards Code Affecting Department Approved Standard Plan Approvals (PDF)	MP SOP SPA	2017-02
Emergency Building Standards for Immediate Enforcement — Exterior Elevated Elements (PDF)	FBH SHL	2017-01
2016 California Residential Code (CRC) — Change to dwelling unit requirements for minimum floor area, and current rulemaking cycle proposal to repeal efficiency dwelling unit requirements from the 2016 CRC (PDF)	SHL	2016-06
2016 California Building Standards Code Effective Date, including Factory-Built Housing, Commercial Modular and Special Purpose Commercial Modular Information (PDF)	CM FBH MH MFMH SPCM	2016-05
Statutory Filing Requirements — Local Ordinances and Regulations (PDF)	SHL	2016-03
Commercial Modular Units — Building Standards and Ordinances (PDF) Replaces Information Bulletins 2006-06 and 2002-08.	CM MH	2016-02
Tiny Homes (PDF) Revised May 9, 2016.	FBH MH MP OL RT SOP SHL	2016-01
Disposal of Abandoned Mobilehomes (PDF)	MP OL RT	2015-07
Commercial Modular (CM) — Registration and Titling Information (PDF)	CM MH RT	2015-05
Factory-Built Housing — Quality Assurance Agencies/ Quality Assurance Inspections Reporting and Inspection Standards (PDF)	FBH	2015-01
Legal Issues Related to Sales of Manufactured Housing Units by Mobilehome Park Interests Without HCD Occupational Licensing (PDF)	MH MP OL	2014-01
Manufactured Home, Mobilehome, and Multifamily Manufactured Housing Fire Sprinkler Systems (PDF)	MH	2013-06
Notice of Changes to the Referenced California Building Code Standards Affecting Department Approved Standard Plan Approvals (PDF)	MP SOP	2013-04
Manufactured Home (MH) Dealer Escrow Clarification (PDF)	OL	2012-04
Carbon Monoxide Device Installation in New & Used Manufactured Homes; Amended Ignition Resistant Construction Rules (PDF)	MH	2012-03
Commercial Modular (CM) Insignia Data Entry (PDF)	CM MH	2012-02
Commercial Modular and Special Purpose Commercial Modular Amended Design and Construction Standards; Adoption of T24, California Building Standards Code (PDF)	CM MH SPCM	2011-06
Manufactured Homes, Mobilehomes and Commercial Modulars Installed on Foundation Systems — HCD 433A (PDF)	CM MH OL SPCM	2011-05
2011 Amendments to the Occupational Licensing Regulations Contained in California Code of Regulations, Title 25 (PDF)	OL	2011-04
Manufactured Home Fire Sprinkler Systems (PDF)	MH	2010-04
2009 Legislative Change Requiring All Mobilehome and Special Occupancy Parks to Have an Emergency Preparedness Plan (PDF)	MP SOP	2010-02
Mortgage Loan Activity Licensing Requirements; Safe Act (PDF)	CM MH MP OL	2010-01
Title 25, California Code of Regulations, Chapter 3, Article 2.3, Ignition-Resistant Construction (PDF)	CM MH MP OL	2009-03
Validity of Local Ordinances Relating to Installation of New Manufactured Homes and/or Sale or Conversion of Mobilehome Parks (PDF)	MP SOP	2008-10
Notice of Changes to the Referenced California Building Standards Code Affecting Department Approved Standard Plan Approvals (PDF) Applicability of the 2007 California Building Code to Statewide Plan Approved Foundation Systems (PDF)	MP SOP SPA	2008-07
Requirements for Manufactured Homes, Mobilehomes and Commercial Modulars Installed on Foundation Systems; HCD MH 433 forms (PDF)	CM MH MP OL SPCM	2006-05
Universal Design: New Model Local Ordinance Availability and New Builder Checklist Requirement (PDF)	SHL	2005-13
Factory-Built Housing — Handbook for City and County Building Officials (PDF)	FBH	2005-11
Changes to the Mobilehome Park and Special Occupancy Park Regulations, Including Lot Line Approvals (PDF)	MP SOP	2005-10
New Policy Regarding Replacement of Manufactured Home HUD Certification Labels (PDF)	EH MH MP RT SOP	2004-03
Manufactured Housing Escrow Law and Regulations (PDF)	MH MP OL RT	2001-06
Mobilehome Recovery Fund Fees (PDF)	MH MP OL	2000-02
1998 Legislative Changes Affecting Recreational Vehicles (PDF)	MH MP OL SOP	1998-11
Emergency Regulations — Applicant Qualification Verification (PDF)	FBH MH OL	1998-04
Manufacture, Transportation, Sale, Lease and Use of Commercial Coaches (PDF)	CM MH OL RT	1993-08
Dairy Farm Housing (PDF)	EH	1990-01
Factory-Built Housing Insignia Requirements (PDF)	FBH	1989-03
Replacement Fuel Gas Burning Water Heaters for Manufactured Homes and Mobilehomes (PDF)	MH	1988-04
Procedures, Forms, Documents and Requirements for Manufactured Homes, Mobilehomes and Commercial Coaches Installed on Foundation Systems (PDF)	CM MH MP	1986-11
Installation of Factory-Built Housing (PDF) Information Bulletin 1986-03 — Supplement to Information Bulletin 1986-01 (PDF)	FBH	1986-01
Plan Approval Requirements (PDF)	CM MH	1985-12
Mobilehome Recovery Fund (PDF)	MH OL	1985-03
Unlicensed Manufactured Home/Mobilehome Sales Activities (PDF)	MH MP OL SOP	1983-16

Subject

Programs

Number

New Occupational Licensing Examination Provider (PDF)