CPC · California Plumbing Code
Authority, Agency & Enforcement
This hub explains who enforces the California Plumbing Code (the AHJ), what enforcement powers and permit/inspection rules apply, and how enforcement responsibilities are assigned among state and local agencies.
Last reviewed: July 6, 2026
Overview
This part of the California Plumbing Code explains who enforces the CPC, the scope of enforcement authority, and how enforcement is carried out — from agency assignments to permits, inspections, interpretations, and remedies. It centers on the Authority Having Jurisdiction (AHJ), the permitting/inspection framework, and the matrix of state and local enforcing agencies that apply to different building types and programs. See the AHJ duties in §103.0 and related provisions on entry, interpretation, and liability for enforcement actions .
The code also describes when written permits and inspections are required (including routine permit rules in Chapter 1 and §104.0) and how special program enforcement is allocated among state agencies (the Adoption/Enforcing Agency matrix, e.g., §1.2.1). For specific permitted work the CPC gives examples and special permit rules (for example, recycled-water systems require a permit per §1505.2) .
Finally, the CPC ties these administrative rules into California’s broader adopting agencies and enforcement scheme (Board of State and Community Corrections, OSHPD, DPH, HCD, etc.) so users can locate which agency enforces particular provisions for a given occupancy or facility type .
In this section
Code references
Grounded in the retrieved California Plumbing Code — click a citation to read the verbatim passage:
CPC § 1505.1.1 High relevance — show source text
The provisions in this section_ encompass the installation, construction, alteration, and repair of recycled water supply systems that are within or a part of a building, including a landscape irrigation system that connects to plumbing that is within or a part of a building, and receive reclaimed (recycled) water provided by a water/wastewater util- ity. When dealing with recycled water supply systems, the Authority Having Jurisdiction and Enforcing Agency may include the recycled water purveyor or potable water purveyor in accordance with their respective statutory authority and responsibility as provided on their respective permits for sup- plying water. Plumbing systems using reclaimed (recycled) water that do not enter the interior of a building plumbed with potable water are not encompassed by this section. All reclaimed (recycled) water use, covered and not covered by this code, is subject to applicable provisions of the State Water Resources Control Board’s Cross-Connection Control Policy Handbook and the California Code of Regulations: Title 22 and Title 23 .
1505.1.1 Allowed Uses. Allowed uses shall include water closets, urinals, trap primers for floor drains and floor sinks, aboveground and subsurface irrigation, industrial or commercial cooling or air conditioning and other uses as generally allowed in the California Code of Regulations, Title 22, Division 4, Chapter 3 and specifi- cally allowed in the permit for the facility producing or supplying the reclaimed (recycled) water issued by the State Water Resources Control Board or Regional Water Quality Control Board .
1505.1.2 Structures Allowed for Toilet and Urinal Flushing. In accordance with Water Code Section 13553, reclaimed (recycled) water shall be allowed for toilet and urinal flushing in certain structures. These structures include commercial, retail, and office buildings, theaters, auditoriums, condominium projects, schools, hotels, apart-
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ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS
ments, barracks, dormitories, jails, prisons, reformatories, and other structures as determined by the State Water Resources Control Board.
1505.2 Permit. It shall be unlawful for a person to construct, install, alter, or cause to be constructed, installed, or altered a recycled water supply system within a building or on its premises without first obtaining a permit to do such work from the Authority Having Jurisdiction.
Prior to commencing the issuance of permits for recy- cled water supply systems pursuant to state requirements relating to recycled water, a city, county, city and county or other local agency shall seek consultation with the State Water Resources Control Board, local public health depart- ment and local recycled water purveyor to ensure that state and local public health concerns are addressed in local stan- dards or ordinances, or in issuing permits.
1505.2.1 Plumbing Plan Submission. No permit for a recycled water supply system shall be issued until complete plumbing plans, with data satisfactory to the Authority Having Jurisdiction, have been submitted and approved.
CPC § 103.0 High relevance — show source text
103.0 Duties and Powers of the Authority Having Jurisdiction.
103.1 General. The Authority Having Jurisdiction shall be the Authority duly appointed to enforce this code. For such purposes, the Authority Having Jurisdiction shall have the powers of a law enforcement officer. The Authority Having Jurisdiction shall have the power to render interpretations of this code and to adopt and enforce rules and regulations supplemental to this code as deemed necessary in order to clarify the application of the provisions of this code. Such interpretations, rules, and regulations shall comply with the intent and purpose of this code.
In accordance with the prescribed procedures and with the approval of the appointing authority, the Authority Having Jurisdiction shall be permitted to appoint a such number of technical officers, inspectors, and other employees as shall be authorized from time to time. The Authority Having Jurisdiction shall be permitted to deputize such inspectors or employees as necessary to carry out the functions of the code enforcement agency.
The Authority Having Jurisdiction shall be permitted to request the assistance and cooperation of other officials of this jurisdiction so far as required in the discharge of the duties in accordance with this code or other pertinent law or ordinance.
103.2 Liability. The Authority Having Jurisdiction charged with the enforcement of this code, acting in good faith and without malice in the discharge of the Authority Having Jurisdiction’s duties, shall not thereby be rendered personally liable for damage that accrues to persons or property as a result of an act or by reason of an act or omission in the discharge of duties. A suit brought against the Authority Having Jurisdiction or employee because of such act or omission performed in the enforcement of provisions of this code shall be defended by legal counsel provided by this jurisdiction until final termination of such proceedings.
103.3 Applications and Permits. The Authority Having Jurisdiction shall be permitted to require the submission of plans, specifications, drawings, and such other information in accordance with the Authority Having Jurisdiction, prior to the commencement of, and at a time during the progress of, work regulated by this code.
The issuance of a permit upon construction documents shall not prevent the Authority Having Jurisdiction from thereafter requiring the correction of errors in said construction documents or from preventing construction operations being carried on thereunder where in violation of this code or of other pertinent ordinance or from revoking a certificate of approval where issued in error.
103.3.1 Licensing. Provision for licensing shall be determined by the Authority Having Jurisdiction. 103.4 Right of Entry. Where it is necessary to make an inspection to enforce the provisions of this code, or where the Authority Having Jurisdiction has reasonable cause to believe that there exists in a building or upon premises a condition or violation of this code that makes the building or premises unsafe, insanitary, dangerous, or hazardous, the Authority
Having Jurisdiction shall be permitted to enter the building or premises at reasonable times to inspect or to perform the duties imposed by the Authority Having Jurisdiction by this code, provided that where such building or premises is occupied, the Authority Having Jurisdiction shall present credentials to the occupant and request entry. Where such building or premises is unoccupied, the Authority Having Jurisdiction shall first make a reasonable effort to locate the owner or other person having charge or control of the building or premises and request entry. Where entry is refused, the Authority Having Jurisdiction has recourse to every remedy provided by law to secure entry.
CPC § 1.2.1 High relevance — show source text
1.2.1 BSC. Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
1. State Buildings for All Occupancies.
Application – State buildings (all occupancies), includ- ing buildings constructed by the Trustees of the Califor- nia State University (CSU) and the Regents of the University of California (UC) where no state agency has the authority to adopt building standards applicable to such buildings.
Enforcing Agency – State or local agency specified by the applicable provisions of law.
Authority Cited – Health and Safety Code Section 18934.5.
Reference – Health and Safety Code, Division 13, Part 2.5, commencing with Section 18901.
2. University of California, California State Universities, and California Community Colleges.
Application – Standards for lighting for parking lots and primary campus walkways at the University of Califor- nia, California State Universities, and California Com- munity Colleges.
Enforcing Agency – State or local agency specified by the applicable provisions of law.
Authority Cited – Government Code Section 14617.
Reference – Government Code Section 14617.
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3. Existing State-Owned Buildings, including those owned by the University of California and by the Cali- fornia State University – Building seismic retrofit stan- dards including abating falling hazards of structural and nonstructural components and strengthening of building structures. See also Division of the State Architect.
Enforcing Agency – State or local agency specified by the applicable provisions of law.
Authority Cited – Government Code Section 16600.
References – Government Code Sections 16600 through 16604.
4. Unreinforced Masonry Bearing Wall Buildings.
Application – Minimum seismic strengthening standards for buildings specified in the California Existing Build- ing Code, except for buildings subject to building stan- dards adopted pursuant to Part 1.5 (commencing with Section 17910).
Enforcing Agency – State or local agency specified by the applicable provisions of law.
Authority Cited – Health and Safety Code Section 18934.7.
Reference – Health and Safety Code Division 13, Part 2.5 commencing with Sections 18901.
1.2.1.1 State Building. For purposes of this code, a “state building” is a structure for which a state agency or state entity has authority to construct, alter, enlarge, replace, repair or demolish.
CPC § 103.2 Medium relevance — show source text
In accordance with the prescribed procedures and with the approval of the appointing authority, the Authority Having Jurisdiction shall be permitted to appoint such number of technical officers, inspectors, and other employees as shall be authorized from time to time. The Authority Having Jurisdiction shall be permitted to deputize such inspectors or employees as necessary to carry out the functions of the code enforcement agency.
The Authority Having Jurisdiction shall be permitted to request the assistance and cooperation of other officials of this jurisdiction so far as required in the discharge of the duties required by this code or other pertinent law or ordi nance.
103.2 Liability. The Authority Having Jurisdiction charged with the enforcement of this code, acting in good faith and without malice in the discharge of the Authority Having Jurisdiction’s duties, shall not thereby be rendered personally liable for damage that accrues to persons or property as a result of an act or by reason of an act or omission in the discharge of such duties. A suit brought against the Authority Having Jurisdiction or employee because of such act or omission performed in the enforcement of provisions of this code shall be defended by legal counsel provided by this jurisdiction until final termination of such proceedings.
103.3 Applications and Permits. The Authority Having Jurisdiction shall be permitted to require the submission of plans, specifications, drawings, and such other information in accordance with the Authority Having Jurisdiction, prior to the commencement of, and at a time during the progress of, work regulated by this code.
The issuance of a permit upon construction documents shall not prevent the Authority Having Jurisdiction from thereafter requiring the correction of errors in said construction documents or from preventing construction operations being carried on thereunder where in violation of this code or of other pertinent ordinance or from revoking a certificate of approval where issued in error.
103.3.1 Licensing. Provision for licensing shall be determined by the Authority Having Jurisdiction. 103.4 Right of Entry. Where it is necessary to make an inspection to enforce the provisions of this code, or where the Authority Having Jurisdiction has reasonable cause to believe that there exists in a building or upon a premises a condition or violation of this code that makes the building or premises
unsafe, insanitary, dangerous, or hazardous, the Authority Having Jurisdiction shall be permitted to enter the building or premises at reasonable times to inspect or to perform the duties imposed upon the Authority Having Jurisdiction by this code, provided that where such building or premises is occupied, the Authority Having Jurisdiction shall present credentials to the occupant and request entry. Where such building or premises is unoccupied, the Authority Having Jurisdiction shall first make a reasonable effort to locate the owner or other person having charge or control of the building or premises and request entry. Where entry is refused, the Authority Having Jurisdiction has recourse to every remedy provided by law to secure entry.
Where the Authority Having Jurisdiction shall have first obtained an inspection warrant or other remedy provided by law to secure entry, no owner, occupant, or person having charge, care or control of a building or premises shall fail or neglect, after a request is made as herein provided, to promptly permit entry herein by the Authority Having Jurisdiction for the purpose of inspection and examination pursuant to this code.
104.0 Permits.
CPC § 102.6 Medium relevance — show source text
102.6 Changes in Building Occupancy. Mechanical systems that are a part of a building or structure undergoing a change in use or occupancy, as defined in the building code, shall be in accordance with the requirements of this code that are applicable to the new use or occupancy. 102.7 Moved Structures. Parts of the mechanical system of a building and part thereof that is moved from one foundation to another, or from one location to another, shall be in accordance with the provisions of this code for new installations and completely tested as prescribed elsewhere in this section for new work, except that walls or floors need not be removed during such test where equivalent means of inspection acceptable to the Authority Having Jurisdiction are provided. 102.8 Appendices. The provisions in the appendices are intended to supplement the requirements of this code and shall not be considered part of this code unless formally adopted as such.
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DIVISION II SCOPE AND ADMINISTRATION
103.0 Duties and Powers of the Authority Having Jurisdiction.
103.1 General. The Authority Having Jurisdiction shall be the Authority duly appointed to enforce this code. For such purposes, the Authority Having Jurisdiction shall have the powers of a law enforcement officer. The Authority Having Jurisdiction shall have the power to render interpretations of this code and to adopt and enforce rules and regulations supplemental to this code as deemed necessary in order to clarify the application of the provisions of this code. Such interpretations, rules, and regulations shall comply with the intent and purpose of this code.
In accordance with the prescribed procedures and with the approval of the appointing authority, the Authority Having Jurisdiction shall be permitted to appoint such number of technical officers, inspectors, and other employees as shall be authorized from time to time. The Authority Having Jurisdiction shall be permitted to deputize such inspectors or employees as necessary to carry out the functions of the code enforcement agency.
The Authority Having Jurisdiction shall be permitted to request the assistance and cooperation of other officials of this jurisdiction so far as required in the discharge of the duties required by this code or other pertinent law or ordi nance.
103.2 Liability. The Authority Having Jurisdiction charged with the enforcement of this code, acting in good faith and without malice in the discharge of the Authority Having Jurisdiction’s duties, shall not thereby be rendered personally liable for damage that accrues to persons or property as a result of an act or by reason of an act or omission in the discharge of such duties. A suit brought against the Authority Having Jurisdiction or employee because of such act or omission performed in the enforcement of provisions of this code shall be defended by legal counsel provided by this jurisdiction until final termination of such proceedings.
103.3 Applications and Permits. The Authority Having Jurisdiction shall be permitted to require the submission of plans, specifications, drawings, and such other information in accordance with the Authority Having Jurisdiction, prior to the commencement of, and at a time during the progress of, work regulated by this code.
The issuance of a permit upon construction documents shall not prevent the Authority Having Jurisdiction from thereafter requiring the correction of errors in said construction documents or from preventing construction operations being carried on thereunder where in violation of this code or of other pertinent ordinance or from revoking a certificate of approval where issued in error.
CPC § 1.3.0 Medium relevance — show source text
In the_ absence of recognized and accepted test methods, the building official shall approve the testing procedures. Tests shall be performed by an approved agency. Reports of such tests shall be retained by the building official for the period required for retention of public records.
1.3.0 Board of State and Community Corrections.
1.3.1 Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
Application – Local detention facilities.
Enforcing Agency – Board of State and Community Cor- rections.
Authority Cited – Penal Code Section 6030; Welfare and Institutions Code Sections 210 and 885.
References – Penal Code Section 6030; Welfare and Institutions Code Sections 210 and 885.
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1.3.2 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this section will be identified in the Matrix Adoption Tables under the acronym BSCC.
1.4.0 Department of Consumer Affairs.
1.4.1 Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
Board of Barbering and Cosmetology.
Application – Any establishment or mobile unit where barbering, cosmetology, or electrolysis is being per- formed.
Enforcing Agency – State or local agency specified by applicable provisions of law.
Authority Cited – Business and Professions Code Sec- tion 7312.
References – Business and Professions Code Sections 7303, 7303.1, 7312, and 7313.
1.4.2 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this section will be identified in the Matrix Adoption Tables under the acronym CA.
1.5.0 Reserved for California Energy Commission.
1.6.0 Department of Food and Agriculture.
1.6.1 Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
Application – Dairies and places of meat and poultry
inspection.
Enforcing Agency – Department of Food and Agricul-
ture.
Authority Cited – Food and Agricultural Code Sections
18735, 18960, 19384, 33481, and 33731.
References – Food and Agricultural Code Sections 18735, 18960, 19384, 33481, and 33731.
CPC § 1.10.4.2 Medium relevance — show source text
1.10.4.2 Applicable Building Standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10 and 11.
Authority Cited – Health and Safety Code Sections 127010, 127015, and 129790.
References – Health and Safety Code Sections 127010, 127015, 1275, and 129675 through 130070. 1.10.4.3. Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Sub- section 1.10.4 will be identified in the Matrix Adoption Tables under the acronym OSHPD 4. 1.10.5 OSHPD 5. Specific scope of application of the agency responsible for enforcement, enforcement agency and the spe- cific authority to adopt and enforce such provisions of this code, unless otherwise stated.
OSHPD 5
Application – Acute psychiatric hospital buildings. Enforcing Agency – Health Care Access and Informa- tion/Office of Statewide Hospital Planning and Devel- opment (OSHPD). The office shall also enforce the Division of the State Architect – Access Compliance reg- ulations and the regulations of the Office of the State Fire Marshal for the above-stated facility types.
1.10.5.1 Applicable Administrative Standards. 1. Title 24, Part 1, California Code of Regulations: Chapter 7. 2. Title 24, Part 2, California Code of Regulations: Sections 1.1.0 and 1.10.0, Chapter 1, Division I, and as indicated in the adoption matrix for Chapter I, Division II.
1.10.5.2 Applicable Building Standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10 and 11.
Authority Cited – Health and Safety Code Sections 1275 and 129850.
References – Health and Safety Code Sections 129680, 1275 and 129675 through 130070. 1.10.5.3 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Sub- section 1.10.5 will be identified in the Matrix Adoption Tables under the Acronym OSHPD 5.
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1.10.6 OSHPD 6. Specific scope of application of the agency responsible for enforcement, enforcement agency and the spe- cific authority to adopt and enforce such provisions of this code, unless otherwise stated.
OSHPD 6
Application – Chemical dependency recovery hospital not within an acute care hospital building or an acute psychiatric facility.
Enforcing Agency – Local building department.
1.10.6.1 Applicable Administrative Standards.
CPC § 1.10.1.3 Medium relevance — show source text
1.10.1.3 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Sub- section 1.10.1 will be identified in the Matrix Adoption Tables under the acronym OSHPD 1, and OSHPD 1R.
1.10.2 OSHPD 2. Specific scope of application of the agency responsible for enforcement, enforcement agency, specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
OSHPD 2
Application – Skilled nursing facilities and intermediate care facility buildings.
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DIVISION I CALIFORNIA ADMINISTRATION
Enforcing Agency – Health Care Access and Informa- tion/Office of Statewide Hospital Planning and Devel- opment (OSHPD). The office shall also enforce the Division of the State Architect access compliance regu- lations and the regulations of the Office of the State Fire Marshal for the above stated facility type.
1.10.2.1 Applicable Administrative Standards.
1. Title 24, Part 1, California Code of Regulations: Chapter 7.
2. Title 24, Part 2, California Code of Regulations: Sections 1.1.0 and 1.10.0, Chapter 1, Division I, and as indicated in the adoption matrix for Chapter 1, Division II.
1.10.2.2 Applicable Building Standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10, and 11.
Authority Cited – Health and Safety Code Sections 127010, 127015, 1275, and 129850.
References – Health and Safety Code Sections 127010, 127015, 1275, and 129680.
1.10.2.3 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Sub- section 1.10.2 will be identified in the Matrix Adoption Tables under the acronym OSHPD 2.
1.10.3 OSHPD 3. Specific scope of application of the agency responsible for enforcement, enforcement agency, specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
OSHPD 3
Application – Licensed clinics and any freestanding building under a hospital license where outpatient clin- ical services are provided.
Enforcing Agency – Local building department.
1.10.3.1 Applicable Administrative Standards.
1. Title 24, Part 1, California Code of Regulations: Chapter 7.
2. Title 24, Part 2, California Code of Regulations: Sections 1.1.0 and 1.10.0, Chapter 1, Division I, and as indicated in the adoption matrix for Chapter 1, Division II.
CPC § 1.10.5.2 Medium relevance — show source text
1.10.5.2 Applicable Building Standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10 and 11.
Authority Cited – Health and Safety Code Sections 1275 and 129850.
References – Health and Safety Code Sections 129680, 1275 and 129675 through 130070. 1.10.5.3 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Sub- section 1.10.5 will be identified in the Matrix Adoption Tables under the Acronym OSHPD 5.
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1.10.6 OSHPD 6. Specific scope of application of the agency responsible for enforcement, enforcement agency and the spe- cific authority to adopt and enforce such provisions of this code, unless otherwise stated.
OSHPD 6
Application – Chemical dependency recovery hospital not within an acute care hospital building or an acute psychiatric facility.
Enforcing Agency – Local building department.
1.10.6.1 Applicable Administrative Standards.
1. Title 24, Part 1, California Code of Regulations: Chapter 7.
2. Title 24, Part 2, California Code of Regulations: Section 1.1.0 and 1.10.0, Chapter 1 Division I, and as indicated in the adoption matrix for Chapter I, Division II.
1.10.6.2 Applicable Building Standards. California Build- ing Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10 and 11.
The provision of Title 24, Part 2, as adopted and amended by OSHPD, shall apply to the applications listed in Section 1.10.6.
Authority Cited – Health and Safety Code Sections 1275, 18929 and 129850.
References – Health and Safety Code Sections 1250.3 and 129675-130070.
1.10.6.3 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Sub- section 1.10.6 will be identified in the Matrix Adoption Tables under the Acronym OSHPD 6.
1.11.0 Office of the State Fire Marshal.
1.11.1 SFM-Office of the State Fire Marshal. Specific scope of application of the agency responsible for enforcement, the enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
Application:
Institutional, Educational, or any Similar Occupancy. Any building or structure used or intended for use as an asylum, jail, mental hospital, hospital, sanitarium, home for the aged, children’s nursery, children’s home, school, or any similar occupancy of any capacity.
CPC § 1.5 Medium relevance — show source text
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3. Existing State-Owned Buildings, including those owned by the University of California and by the Cali- fornia State University – Building seismic retrofit stan- dards including abating falling hazards of structural and nonstructural components and strengthening of building structures. See also Division of the State Architect.
Enforcing Agency – State or local agency specified by the applicable provisions of law.
Authority Cited – Government Code Section 16600.
References – Government Code Sections 16600 through 16604.
4. Unreinforced Masonry Bearing Wall Buildings.
Application – Minimum seismic strengthening standards for buildings specified in the California Existing Build- ing Code, except for buildings subject to building stan- dards adopted pursuant to Part 1.5 (commencing with Section 17910).
Enforcing Agency – State or local agency specified by the applicable provisions of law.
Authority Cited – Health and Safety Code Section 18934.7.
Reference – Health and Safety Code Division 13, Part 2.5 commencing with Sections 18901.
1.2.1.1 State Building. For purposes of this code, a “state building” is a structure for which a state agency or state entity has authority to construct, alter, enlarge, replace, repair or demolish.
1.2.1.2 Enforcement. [CSU, UC, Judicial Council and California Department of Corrections and Rehabilita- tion] state agencies or state entities authorized to con- struct state buildings may appoint a building official who is responsible to the agency for enforcement of the pro- visions of the California Building Standards Code.
Exception: State buildings regulated by other sections of this code remain the enforcement responsibility of the designated entities.
1.2.1.3 Enforcement, Reserved for DGS.
1.2.1.4 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this sec- tion will be identified in the Matrix Adoption Tables under the acronym BSC.
1.2.2 BSC-CG. Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
1. Green Building Standards for Nonresidential Occu- pancies.
Application – All occupancies where no other state agency has the authority to adopt green building stan- dards applicable to those occupancies.
Enforcing Agency – State or local agency specified by the applicable provisions of law.
Authority Cited – Health and Safety Code Sections 18930.5, 18938 and 18940.5.
Reference – Health and Safety Code, Division 13, Part 2.5, commencing with Section 18901.
2. Graywater Systems for Nonresidential Occupancies.
CPC § 102.5 Medium relevance — show source text
** Openings into a drainage or vent system, excepting those openings to which plumbing fixtures are properly connected or which constitute vent terminals, shall be permanently plugged or capped in an approved manner, using the appropriate materials in accordance with this code.
102.5 Health and Safety. Where compliance with the provisions of this code fails to eliminate or alleviate a nuisance, or other dangerous or insanitary condition that involves health or safety hazards, the owner or the owner’s agent shall install such additional plumbing and drainage facilities or shall make such repairs or alterations as ordered by the Authority Having Jurisdiction. 102.6 Changes in Building Occupancy. Plumbing systems that are a part of a building or structure undergoing a change in use or occupancy, as defined in the building code, shall be in accordance with the requirements of this code that are applicable to the new use or occupancy. 102.7 Moved Structures. Parts of the plumbing system of a building or part thereof that is moved from one foundation to another, or from one location to another, shall be in accordance with the provisions of this code for new installations and completely tested as prescribed elsewhere in this section for new work, except that walls or floors need not be removed during such test where other equivalent means of inspection acceptable to the Authority Having Jurisdiction are provided. 102.8 Appendices. The provisions in the appendices are intended to supplement the requirements of this code and shall not be considered part of this code unless formally adopted as such.
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DIVISION II SCOPE AND ADMINISTRATION
103.0 Duties and Powers of the Authority Having Jurisdiction.
103.1 General. The Authority Having Jurisdiction shall be the Authority duly appointed to enforce this code. For such purposes, the Authority Having Jurisdiction shall have the powers of a law enforcement officer. The Authority Having Jurisdiction shall have the power to render interpretations of this code and to adopt and enforce rules and regulations supplemental to this code as deemed necessary in order to clarify the application of the provisions of this code. Such interpretations, rules, and regulations shall comply with the intent and purpose of this code.
In accordance with the prescribed procedures and with the approval of the appointing authority, the Authority Having Jurisdiction shall be permitted to appoint a such number of technical officers, inspectors, and other employees as shall be authorized from time to time. The Authority Having Jurisdiction shall be permitted to deputize such inspectors or employees as necessary to carry out the functions of the code enforcement agency.
The Authority Having Jurisdiction shall be permitted to request the assistance and cooperation of other officials of this jurisdiction so far as required in the discharge of the duties in accordance with this code or other pertinent law or ordinance.
103.2 Liability. The Authority Having Jurisdiction charged with the enforcement of this code, acting in good faith and without malice in the discharge of the Authority Having Jurisdiction’s duties, shall not thereby be rendered personally liable for damage that accrues to persons or property as a result of an act or by reason of an act or omission in the discharge of duties. A suit brought against the Authority Having Jurisdiction or employee because of such act or omission performed in the enforcement of provisions of this code shall be defended by legal counsel provided by this jurisdiction until final termination of such proceedings.
CPC § 18941.8. Medium relevance — show source text
Authority Cited – Health & Safety Code Section 18941.8.
Reference – Health & Safety Code Section 18941.8.
1.2.3 Alternate Materials, Design, and Methods of Con- struction and Equipment. The provisions of this code are not intended to prevent the installation of any material or to pro- hibit any design or method of construction not specifically prescribed by this code, provided that any such alternative has been approved. An alternative material, design or method of construction shall be approved where the building official finds that the proposed design is satisfactory and complies with the intent of the provisions of this code, and that the material, method or work offered is, for the purpose intended, at least the equivalent of that prescribed in this code in qual- ity, strength, effectiveness, fire resistance, durability, and safety.
1.2.3.1 Research Reports. Supporting data, where nec- essary to assist in the approval of materials or assem- blies not specifically provided for in this code, shall consist of valid research reports from approved sources.
1.2.3.2 Tests. Whenever there is insufficient evidence of compliance with the provisions of this code, or evidence that a material or method does not conform to the requirements of this code, or in order to substantiate claims for alternative materials or methods, the building official shall have the authority to require tests as evi- dence of compliance to be made at no expense to the jurisdiction. Test methods shall be as specified in this code or by other recognized test standards. In the absence of recognized and accepted test methods, the building official shall approve the testing procedures. Tests shall be performed by an approved agency. Reports of such tests shall be retained by the building official for the period required for retention of public records.
1.3.0 Board of State and Community Corrections.
1.3.1 Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
Application – Local detention facilities.
Enforcing Agency – Board of State and Community Cor- rections.
Authority Cited – Penal Code Section 6030; Welfare and Institutions Code Sections 210 and 885.
References – Penal Code Section 6030; Welfare and Institutions Code Sections 210 and 885.
6 2025 CALIFORNIA PLUMBING CODE
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1.3.2 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this section will be identified in the Matrix Adoption Tables under the acronym BSCC.
1.4.0 Department of Consumer Affairs.
1.4.1 Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
Board of Barbering and Cosmetology.
Frequently asked questions
Who is the “Authority Having Jurisdiction” (AHJ)?
The AHJ is the official appointed to enforce the CPC; the code gives the AHJ law‑enforcement powers to interpret the code, adopt supplemental rules, appoint or deputize inspectors, require plans, and pursue remedies for violations (see §103.0 and its subsections) .
When do I need a permit and inspection?
A written construction permit is required before erecting, installing, altering, relocating, or repairing plumbing systems except where specific Chapter 1 exemptions apply; the code’s permit and inspection rules are in Chapter 1 (see §104.0 and 1.8.4.1 for permit requirements) . Certain systems (for example, recycled‑water supply systems) have explicit permit rules in their sections (see §1505.2) .
What enforcement powers does the AHJ have?
The AHJ may inspect, require corrections, revoke approvals, enter premises for inspection (with credentials or legal remedy if entry is refused), and request assistance from other officials; the code also addresses AHJ liability and defenses when acting in good faith (see §103.1–103.4) .
More in California Plumbing Code
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- General Regulations
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- Water Heaters
- Water Supply and Distribution
- Sanitary Drainage (Drain, Waste, and Vent)
- Indirect Wastes
- Vents
- Traps and Interceptors
- Storm Drainage
- Fuel Gas Piping
- Health Care Facilities — Medical Gas and Medical Vacuum Systems
- Alternate Water Sources and Nonpotable Rainwater Catchment Systems
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