San Francisco Building Inspection Commission Codes Art. 90 Introduction

No San Francisco Electrical Code Amendments.

EXISTING BUILDING CODE 2025 Edition

EXISTING BUILDING CODE

2025 Edition

[Includes legislation adopted by the Board of Supervisors through December 31, 2025.]

Copyright © 2026

by

THE CITY AND COUNTY OF SAN FRANCISCO

A Municipal Corporation

All rights reserved. No part of this publication may be reproduced or distributed by any means or stored in a database or retrieval system without prior written permission of the City and County of San Francisco.

PUBLISHER’S NOTE

The full 2025 San Francisco Existing Building Code consists of the 2025 California Existing Building Code, and as further amended by these San Francisco amendments.

The San Francisco Existing Building Code amendments contained herein are designed to be used in conjunction with the 2025 California Existing Building Code.

The San Francisco Existing Building Code amendments contained herein were adopted by the Board of Supervisors of the City and County of San Francisco on November 21, 2025, by Ordinance 230-25, effective December 22, 2025, and operative January 1, 2026.

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Existing Building Code
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2025 San Francisco Amendments
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Note that prior to the 2016 revision of the Building Inspection Commission Codes, San Francisco’s existing building requirements were published as Chapter 34 of the San Francisco Building Code.

Supplements to this Code and complete copies of all seven

Building Inspection Commission (BIC) Codes

(Building, Electrical, Existing Building, Green Building, Housing, Mechanical, and Plumbing)

can be ordered from:

AMERICAN LEGAL PUBLISHING CORPORATION

Cincinnati, Ohio 45202

800-445-5588

Fax: 513-763-3562

www.amlegal.com

PREFACE

Text Format:

The text in this publication is formatted to allow the user to quickly and easily determine the source of the included material. Language derived from the 2025 California Code that is unchanged by local amendment is printed in shaded text (see below). Language constituting San Francisco amendments to the California Code is printed in unformatted (or “plain”) text. In either case, bold and/or italic typefaces may be used as appropriate for emphasis, etc. See below for examples.

To further simplify use of the San Francisco amendments with corresponding sections of the 2025 California Code, explanatory remarks appearing in italics are provided (in boxes at the beginning of affected provisions) indicating whether the San Francisco amendment to the California Code is adding, revising, or replacing a section or portion of a section.

To summarize:

Explanatory remarks are boxed and italicized.

Unchanged language from the 2025 California Code is shaded, and may include bold and/or italicized formatting. San Francisco amendments are printed in unformatted (“plain”) text, and may include bold and/or italicized formatting.

Marginal Markings:

[ ← ]

The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.

An arrow represents the location of language that has been deleted by San Francisco from the 2025 California Code. A solid line represents a change from the original published edition of the 202% San Francisco Existing Building Code.

Historical Notations:

Language which has been added, amended, or deleted from the 2025 publication of the San Francisco Existing Building Code is indicated with an historical notation, setting forth the ordinance number and date of adoption.

GREEN BUILDING CODE 2025 Edition

GREEN BUILDING CODE

2025 Edition

The San Francisco Green Building Code is current through:

[Includes legislation adopted by the Board of Supervisors through December 31, 2025]

Copyright © 2026

by

THE CITY AND COUNTY OF SAN FRANCISCO

A Municipal Corporation

All rights reserved. No part of this publication may be reproduced or distributed by any means or stored in a database or retrieval system without prior written permission of the City and County of San Francisco.

PUBLISHER'S NOTE

The full 2025 San Francisco Green Building Code consists of the 2025 California Green Building Standards Code, and as further amended by these San Francisco amendments.

The San Francisco Green Building Code amendments contained herein are designed to be used in conjunction with the 2025 California Green Building Standards Code.

The San Francisco Green Building Code amendments contained herein were adopted by the Board of Supervisors of the City and County of San Francisco on November 21, 2025, by Ordinance 229-25, effective December 22, 2025, and operative January 1, 2026.

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Standards Code
Complete
+
San Francisco
{'}'}
Green Building Code
2025 San Francisco Amendments
<!>

Note that prior to the 2013 revision of the Building Inspection Commission Codes, material derived from the California Green Building Standards Codes was published as Chapter 13C of the San Francisco Building Code. Supplements to this Code and complete copies of all seven

Building Inspection Commission (BIC) Codes

(Building, Electrical, Existing Building, Green Building, Housing, Mechanical, and Plumbing)

can be ordered from:

AMERICAN LEGAL PUBLISHING CORPORATION

Cincinnati, Ohio 45202

800-445-5588

Fax: 513-763-3562

www.amlegal.com

PREFACE

Text Format:

The text in this publication is formatted to allow the user to quickly and easily determine the source of the included material. Language derived from the 2025 California Code that is unchanged by local amendment is printed in shaded text (see below). Language constituting San Francisco amendments to the California Code is printed in unformatted (or “plain”) text. In either case, bold and/or italic typefaces may be used as appropriate for emphasis, etc. See below for examples.

To further simplify use of the San Francisco amendments with corresponding sections of the 2025 California Code, explanatory remarks appearing in italics are provided (in boxes at the beginning of affected provisions) indicating whether the San Francisco amendment to the California Code is adding, revising, or replacing a section or portion of a section.

To summarize:

Explanatory remarks are boxed and italicized.

Unchanged language from the 2025 California Code is shaded, and may include bold and/or italicized formatting. San Francisco amendments are printed in unformatted ("plain") text, and may include bold and/or italicized formatting.

[ ← ]

The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.

An arrow represents the location of language that has been deleted by San Francisco from the 2025 California Code. A solid line represents a change from the original published edition of the 2025 San Francisco Green Building Code.

Historical Notations:

Language which has been added, amended, or deleted from the 2025 publication of the San Francisco Green Building Code is indicated with an historical notation, setting forth the ordinance number and date of adoption.

Additionally, a table is included below that lists and summarizes all legislation that has affected this Code and the other Building Inspection Commission codes after their initial enactment.

HOUSING CODE 2025 Edition

HOUSING CODE

2025 Edition

[Includes legislation adopted by the Board of Supervisors through Ord. 92-26, approved 5/15/2026, effective 6/15/2026]

Copyright © 2026

by

THE CITY AND COUNTY OF SAN FRANCISCO

A Municipal Corporation

All rights reserved. No part of this publication may be reproduced or distributed by any means or stored in a database or retrieval system without prior written permission of the City and County of San Francisco.

PUBLISHER'S NOTE

The 2025 Edition of the Housing Code contained herein is a reprint of the 2007 San Francisco Housing Code, as adopted by the Board of Supervisors of the City and County of San Francisco on November 6, 2007, by Ordinance 256-07, effective January 1, 2008, as amended by legislation thereafter.

Supplements to this Code and complete copies of all seven

Building Inspection Commission (BIC) Codes

(Building, Electrical, Existing Building, Green Building, Housing, Mechanical, and Plumbing)

can be ordered from:

AMERICAN LEGAL PUBLISHING CORPORATION

800-445-5588

Fax: 513-763-3562

www.amlegal.com

PREFACE

Marginal Markings:

[ ← ]

The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.

An arrow represents the location of language that has been deleted by San Francisco from the 2007 California Code.

A solid line represents a change from the original published edition of the 2025 San Francisco Housing Code.

Historical Notations:

Language which has been added, amended, or deleted from the 2007 publication of the San Francisco Housing Code is indicated with an historical notation, setting forth the ordinance number and date of adoption.

MECHANICAL CODE 2025 Edition

MECHANICAL CODE

2025 Edition

[Includes legislation adopted by the Board of Supervisors through December 31, 2025]

Copyright © 2026

by

THE CITY AND COUNTY OF SAN FRANCISCO

A Municipal Corporation

All rights reserved. No part of this publication may be reproduced or distributed by any means or stored in a database or retrieval system without prior written permission of the City and County of San Francisco.

PUBLISHER'S NOTE

The full 2025 San Francisco Mechanical Code consists of the 2025 California Mechanical Code, and as further amended by these San Francisco amendments.

The San Francisco Mechanical Code amendments contained herein are designed to be used in conjunction with the 2025 California Mechanical Code.

The San Francisco Mechanical Code amendments contained herein were adopted by the Board of Supervisors of the City and County of San Francisco on November 21, 2025, by Ordinance 227-25, effective December 22, 2025, and operative January 1, 2026.

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> 2025 California Mechanical Code
Complete
+ ' '
San Francisco
Mechanical Code
{ } }
2025 San Francisco Amendments
<!>

Supplements to this Code and complete copies of all seven

Building Inspection Commission (BIC) Codes

(Building, Electrical, Existing Building, Green Building, Housing, Mechanical, and Plumbing)

can be ordered from:

AMERICAN LEGAL PUBLISHING

Cincinnati, Ohio 45202

800-445-5588

Fax: 513-763-3562

www.amlegal.com

PREFACE

Text Format:

The text in this publication is formatted to allow the user to quickly and easily determine the source of the included material. Language derived from the 2025 California Code that is unchanged by local amendment is printed in shaded text (see below). Language constituting San Francisco amendments to the California Code is printed in unformatted (or “plain”) text. In either case, bold and/or italic typefaces may be used as appropriate for emphasis, etc. See below for examples.

To further simplify use of the San Francisco amendments with corresponding sections of the 2025 California Code, explanatory remarks appearing in italics are provided (in boxes at the beginning of affected provisions) indicating whether the San Francisco amendment to the California Code is adding, revising, or replacing a section or portion of a section.

To summarize:

Explanatory remarks are boxed and italicized.

Unchanged language from the 2025 California Code is shaded, and may include bold and/or italicized formatting. San Francisco amendments are printed in unformatted ("plain") text, and may include bold and/or italicized formatting.

Marginal Markings:

An arrow [ ← ]

The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.

represents the location of language that has been deleted by San Francisco from the 2025 California Code.

A solid line represents a change from the original published edition of the 2025 San Francisco Mechanical Code.

Historical Notations:

Language which has been added, amended, or deleted from the 2025 publication of the San Francisco Mechanical Code is indicated with an historical notation, setting forth the ordinance number and date of adoption. Additionally, a table is included below that lists and summarizes all legislation that has affected this Code and the other Building Inspection Commission codes after their initial enactment.

PLUMBING CODE 2025 Edition

PLUMBING CODE

2025 Edition

[Includes legislation adopted by the Board of Supervisors through December 31, 2025]

Copyright © 2026

by

THE CITY AND COUNTY OF SAN FRANCISCO

A Municipal Corporation

All rights reserved. No part of this publication may be reproduced or distributed by any means or stored in a database or retrieval system without prior written permission of the City and County of San Francisco.

PUBLISHER'S NOTE

The full 2025 San Francisco Plumbing Code consists of the 2025 California Plumbing Code, and as further amended by these San Francisco amendments.

The San Francisco Plumbing Code amendments contained herein are designed to be used in conjunction with the 2025 California Plumbing Code.

The San Francisco Plumbing Code amendments contained herein were adopted by the Board of Supervisors of the City and County of San Francisco on November 21, 2025, by Ordinance 226-25, effective December 22, 2025, and operative January 1, 2026.

<!Text read from an image; its layout may differ:
> 2025 California Plumbing Code
Complete
+ ' '
San Francisco
Plumbing Code
{ } }
2025 San Francisco Amendments
<!>

Supplements to this Code and complete copies of all seven

Building Inspection Commission (BIC) Codes

(Building, Electrical, Existing Building, Green Building, Housing, Mechanical, and Plumbing)

can be ordered from:

AMERICAN LEGAL PUBLISHING CORPORATION

Cincinnati, Ohio 45202

800-445-5588

Fax: 513-763-3562

www.amlegal.com

PREFACE

Text Format:

The text in this publication is formatted to allow the user to quickly and easily determine the source of the included material. Language derived from the 2025 California Code that is unchanged by local amendment is printed in shaded text (see below). Language constituting San Francisco amendments to the California Code is printed in unformatted (or “plain”) text. In either case, bold and/or italic typefaces may be used as appropriate for emphasis, etc. See below for examples.

To further simplify use of the San Francisco amendments with corresponding sections of the 2025 California Code, explanatory remarks appearing in italics are provided (in boxes at the beginning of affected provisions) indicating whether the San Francisco amendment to the California Code is adding, revising, or replacing a section or portion of a section.

To summarize:

Explanatory remarks are boxed and italicized.

Unchanged language from the 2025 California Code is shaded, and may include bold and/or italicized formatting. San Francisco amendments are printed in unformatted ("plain") text, and may include bold and/or italicized formatting.

Marginal Markings:

An arrow [ ← ]

The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.

represents the location of language that has been deleted by San Francisco from the 2025 California Code.

Material altered after the initial adoption of the 2025 San Francisco Mechanical Code is shown by a solid vertical line at the left margin of the text.

Historical Notations:

Language which has been added, amended, or deleted from the 2025 publication of the San Francisco Plumbing Code is indicated with an historical notation, setting forth the ordinance number and date of adoption. Additionally, a table is included below that lists and summarizes all legislation that has affected this Code and the other Building Inspection Commission codes after their initial enactment.