CBC · California Building Code
Process — Statement of Special Inspections, Reports & Responsibilities
This hub explains CBC requirements for the Statement of Special Inspections, required inspection reports, contractor responsibilities, and structural observation.
Last reviewed: July 5, 2026
Overview
This section of the California Building Code governs the Statement of Special Inspections, the duties of approved agencies and contractors, required inspection and test reports, and structural observation — the administrative and quality‑assurance process that supports safe construction (see §1704 and §1705 of the CBC) . It sets the permit‑condition framework: who must be engaged, when special inspection is required, and how findings are recorded and submitted to the enforcement agency.
The registered design professional in responsible charge normally prepares the statement of special inspections and must identify materials/systems to be inspected, the type and extent of each inspection or test, whether inspection is continuous or periodic, and deferred submittals that need supplemental statements (§1704.3.1) . Approved agencies keep inspection records and submit reports describing the nature, extent and location of inspections and whether work conforms to the approved construction documents; unresolved discrepancies must be reported to the contractor, the registered design professional and the building official, and a final report is required (§1704.2.4, §1704.5) . The code also establishes contractor statements of responsibility and the requirement for structural observations where specified (§1704.4, §1704.6) .
In this section
Code references
Grounded in the retrieved California Building Code — click a citation to read the verbatim passage:
CBC § 3.1 High relevance — show source text
[DSA-SS, DSA-SS/CC] The exception is not permitted by DSA.
1704 A .3.1 Content of statement of special inspections. The statement of special inspections shall identify the following:
The materials, systems, components and work required to have special inspections or tests by the building official or by the registered design professional responsible for each portion of the work.
The type and extent of each special inspection.
The type and extent of each test.
Additional requirements for special inspections or tests for seismic or wind resistance as specified in Sections 1705 A .12, 1705 A .13 and 1705 A .14.
For each type of special inspection, identification as to whether it will be continuous special inspection, periodic special inspection or performed in accordance with the notation used in the referenced standard where the inspections are defined.
Deferred submittal items that require a supplemental statement of special inspections.
1704 A .3.2 Seismic requirements in the statement of special inspections. Where Section 1705 A .13 or 1705 A .14 specifies special inspections or tests for seismic resistance, the statement of special inspections shall identify the equipment/components that require special seismic certification and seismic force-resisting systems that are subject to the special inspections or tests.
1704 A .3.3 Wind requirements in the statement of special inspections. Where Section 1705 A .12 specifies special inspection for wind resistance, the statement of special inspections shall identify the main windforce-resisting systems and wind-resisting components that are subject to special inspections.
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SPECIAL INSPECTIONS AND TESTS
1704 A .4 Contractor responsibility. Each contractor responsible for the construction of a main wind- or seismic force-resisting system, installation of equipment/components requiring special seismic certification or a wind- or seismic force-resisting component listed in the statement of special inspections shall submit a written statement of responsibility to the building official and the owner or the owner’s authorized agent prior to the commencement of work on the system or component. The contractor’s statement of responsibility shall contain acknowledgement of awareness of the special requirements contained in the statement of special inspections. [DSA-SS, DSA-SS/CC] The contractor’s statement is required only when specified on the approved construction documents.
1704 A .5 Submittals to the building official. In addition to the submittal of reports of special inspections and tests in accordance with Section 1704 A .2.4, reports and certificates shall be submitted by the owner or the owner’s authorized agent to the building official for each of the following:
Reserved.
Reserved.
Certificates of compliance for equipment/components requiring special seismic certification in accordance with Section 1705 A .14.3.
Reports of preconstruction tests for shotcrete in accordance with ACI 318 and Section 1705A.3.9.2.
Certificates of compliance for open web steel joists and joist girders in accordance with Section 2207 A. 5.
CBC § 1704.2.2 High relevance — show source text
The registered design professional in responsible charge and engineers of record involved in the design of the project are permitted to act as an approved agency and their personnel are permitted to act as special inspectors for the work designed by them, provided they qualify as special inspectors.
1704.2.2 Access for special inspection. The construction or work for which special inspection or testing is required shall remain accessible and exposed for special inspection or testing purposes until completion of the required special inspections or tests.
1704.2.3 Statement of special inspections. The applicant shall submit a statement of special inspections in accordance with Section 107.1 as a condition for permit issuance. This statement shall be in accordance with Section 1704.3.
Exception: A statement of special inspections is not required for portions of structures designed and constructed in accordance with the cold-formed steel light-frame construction provisions of Section 2206.1.2 or the conventional light-frame construction provisions of Section 2308. [OSHPD 1R, 2 & 5] Not permitted by OSHPD.
1704.2.4 Report requirement. Approved agencies shall keep records of special inspections and tests. The approved agency shall submit reports of special inspections and tests to the building official and to the registered design professional in responsible charge at frequencies required by the approved construction documents or building official. All reports shall describe the nature and extent of inspections and tests, the location where the inspections and tests were performed, and indicate that work inspected or tested was or was not completed in conformance to approved construction documents. Discrepancies shall be brought to the immediate attention of the contractor for correction. If they are not corrected, the discrepancies shall be brought to the attention of the building official and to the registered design professional in responsible charge prior to the completion of that phase of the work. A final report documenting required special inspections and tests, and correction of any discrepancies noted in the inspections or tests, shall be submitted at a point in time agreed upon prior to the start of work by the owner or the owner’s authorized agent to the building official. [OSHPD 1R, 2 & 5] Report requirement shall be per 1704A.2.4.
1704.2.5 Special inspection of fabricated items. Where fabrication of structural, load-bearing or lateral load-resisting members or assemblies is being conducted on the premises of a fabricator’s shop, special inspections of the fabricated items shall be performed during fabrication, except where the fabricator has been approved to perform work without special inspections in accordance with Section 1704.2.5.1.
1704.2.5.1 Fabricator approval. [OSHPD 1R, 2 & 5] Not permitted by OSHPD. Special inspections during fabrication are not required where the work is done on the premises of a fabricator approved to perform such work without special inspection. Approval shall be based on review of the fabricator’s written fabrication procedures and quality control manuals that provide a basis for control of materials and workmanship, with periodic auditing of fabrication and quality control practices by an approved agency or the building official. At completion of fabrication, the approved fabricator shall submit a certificate of compliance to the owner or the owner’s authorized agent for submittal to the building official as specified in Section 1704.5 stating that the work was performed in accordance with the approved construction documents.
CBC § 1704.5 High relevance — show source text
At completion of fabrication, the approved fabricator shall submit a certificate of compliance to the owner or the owner’s authorized agent for submittal to the building official as specified in Section 1704.5 stating that the work was performed in accordance with the approved construction documents.
1704.3 Statement of special inspections. Where special inspections or tests are required by Section 1705, the registered design professional in responsible charge shall prepare a statement of special inspections in accordance with Section 1704.3.1 for submittal by the applicant in accordance with Section 1704.2.3.
Exception: The statement of special inspections is permitted to be prepared by a qualified person approved by the building official for construction not designed by a registered design professional.
1704.3.1 Content of statement of special inspections. The statement of special inspections shall identify the following:
The materials, systems, components and work required to have special inspections or tests by the building official or by the registered design professional responsible for each portion of the work.
The type and extent of each special inspection.
The type and extent of each test.
Additional requirements for special inspections or tests for seismic or wind resistance as specified in Sections 1705.12, 1705.13 and 1705.14.
For each type of special inspection, identification as to whether it will be continuous special inspection, periodic special inspection or performed in accordance with the notation used in the referenced standard where the inspections are defined.
Deferred submittal items that require a supplemental statement of special inspections.
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1704.3.2 Seismic requirements in the statement of special inspections. Where Section 1705.13 or 1705.14 specifies special inspections or tests for seismic resistance, the statement of special inspections shall identify the designated seismic systems and seismic force-resisting systems that are subject to the special inspections or tests. [OSHPD 1R, 2 & 5] Where Section 1705.13 or 1705.14 specifies special inspections or tests for seismic resistance, the statement of special inspections shall identify the equip- ment/components that require special seismic certification and seismic force-resisting systems that are subject to the special inspection or tests.
1704.3.3 Wind requirements in the statement of special inspections. Where Section 1705.12 specifies special inspection for wind resistance, the statement of special inspections shall identify the main windforce-resisting systems and wind-resisting components that are subject to special inspections.
1704.4 Contractor responsibility. Each contractor responsible for the construction of a main wind- or seismic force-resisting system, designated seismic system or a wind- or seismic force-resisting component listed in the statement of special inspections shall submit a written statement of responsibility to the building official and the owner or the owner’s authorized agent prior to the commencement of work on the system or component. The contractor’s statement of responsibility shall contain acknowledgement of awareness of the special requirements contained in the statement of special inspections.
CBC § 1704A.2.4. High relevance — show source text
If they are not corrected, the discrepancies shall be brought to the attention of the building official and to the registered design professional in responsible charge prior to the completion of that phase of the work. A final report documenting required special inspections and tests, and correction of any discrepancies noted in the inspections or tests, shall be submitted at a point in time agreed upon prior to the start of work by the owner or the owner’s authorized agent to the building official. [OSHPD 1R, 2 & 5] Report requirement shall be per 1704A.2.4.
1704.2.5 Special inspection of fabricated items. Where fabrication of structural, load-bearing or lateral load-resisting members or assemblies is being conducted on the premises of a fabricator’s shop, special inspections of the fabricated items shall be performed during fabrication, except where the fabricator has been approved to perform work without special inspections in accordance with Section 1704.2.5.1.
1704.2.5.1 Fabricator approval. [OSHPD 1R, 2 & 5] Not permitted by OSHPD. Special inspections during fabrication are not required where the work is done on the premises of a fabricator approved to perform such work without special inspection. Approval shall be based on review of the fabricator’s written fabrication procedures and quality control manuals that provide a basis for control of materials and workmanship, with periodic auditing of fabrication and quality control practices by an approved agency or the building official. At completion of fabrication, the approved fabricator shall submit a certificate of compliance to the owner or the owner’s authorized agent for submittal to the building official as specified in Section 1704.5 stating that the work was performed in accordance with the approved construction documents.
1704.3 Statement of special inspections. Where special inspections or tests are required by Section 1705, the registered design professional in responsible charge shall prepare a statement of special inspections in accordance with Section 1704.3.1 for submittal by the applicant in accordance with Section 1704.2.3.
Exception: The statement of special inspections is permitted to be prepared by a qualified person approved by the building official for construction not designed by a registered design professional.
1704.3.1 Content of statement of special inspections. The statement of special inspections shall identify the following:
The materials, systems, components and work required to have special inspections or tests by the building official or by the registered design professional responsible for each portion of the work.
The type and extent of each special inspection.
The type and extent of each test.
Additional requirements for special inspections or tests for seismic or wind resistance as specified in Sections 1705.12, 1705.13 and 1705.14.
For each type of special inspection, identification as to whether it will be continuous special inspection, periodic special inspection or performed in accordance with the notation used in the referenced standard where the inspections are defined.
Deferred submittal items that require a supplemental statement of special inspections.
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CBC § 2.5 High relevance — show source text
All reports shall describe the nature and extent of inspections and tests, the location where the inspections and tests were performed, and indicate that work inspected or tested was or was not completed in conformance to approved construction documents . Discrepancies shall be brought to the immediate attention of the contractor for correction. If they are not corrected, the discrepancies shall be brought to the attention of the building official and to the registered design professional in responsible charge prior to the completion of that phase of the work. A final report documenting required special inspections and tests, and correction of any discrepancies noted in the inspections or tests, shall be submitted at a point in time agreed upon prior to the start of work by the owner or the owner’s authorized agent to the building official.
1704 A .2.5 Special inspection of fabricated items. Where fabrication of structural, load-bearing or lateral load-resisting members or assemblies is being conducted on the premises of a fabricator’s shop, special inspections of the fabricated items shall be performed during fabrication.
1704 A .2.5.1 Fabricator approval. Not permitted by DSA-SS, DSA-SS/CC or OSHPD.
1704 A .3 Statement of special inspections. Where special inspections or tests are required by Section 1705 A, the registered design professional in responsible charge shall prepare a statement of special inspections in accordance with Section 1704 A .3.1 for submittal by the applicant in accordance with Section 1704 A .2.3.
Exception: The statement of special inspections is permitted to be prepared by a qualified person approved by the building official for construction not designed by a registered design professional.
[DSA-SS, DSA-SS/CC] The exception is not permitted by DSA.
1704 A .3.1 Content of statement of special inspections. The statement of special inspections shall identify the following:
The materials, systems, components and work required to have special inspections or tests by the building official or by the registered design professional responsible for each portion of the work.
The type and extent of each special inspection.
The type and extent of each test.
Additional requirements for special inspections or tests for seismic or wind resistance as specified in Sections 1705 A .12, 1705 A .13 and 1705 A .14.
For each type of special inspection, identification as to whether it will be continuous special inspection, periodic special inspection or performed in accordance with the notation used in the referenced standard where the inspections are defined.
Deferred submittal items that require a supplemental statement of special inspections.
1704 A .3.2 Seismic requirements in the statement of special inspections. Where Section 1705 A .13 or 1705 A .14 specifies special inspections or tests for seismic resistance, the statement of special inspections shall identify the equipment/components that require special seismic certification and seismic force-resisting systems that are subject to the special inspections or tests.
1704 A .3.3 Wind requirements in the statement of special inspections. Where Section 1705 A .12 specifies special inspection for wind resistance, the statement of special inspections shall identify the main windforce-resisting systems and wind-resisting components that are subject to special inspections.
2025 CALIFORNIA BUILDING CODE 17A-5
CBC § 17-5 High relevance — show source text
2025 CALIFORNIA BUILDING CODE 17-5
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SPECIAL INSPECTIONS AND TESTS
1704.3.2 Seismic requirements in the statement of special inspections. Where Section 1705.13 or 1705.14 specifies special inspections or tests for seismic resistance, the statement of special inspections shall identify the designated seismic systems and seismic force-resisting systems that are subject to the special inspections or tests. [OSHPD 1R, 2 & 5] Where Section 1705.13 or 1705.14 specifies special inspections or tests for seismic resistance, the statement of special inspections shall identify the equip- ment/components that require special seismic certification and seismic force-resisting systems that are subject to the special inspection or tests.
1704.3.3 Wind requirements in the statement of special inspections. Where Section 1705.12 specifies special inspection for wind resistance, the statement of special inspections shall identify the main windforce-resisting systems and wind-resisting components that are subject to special inspections.
1704.4 Contractor responsibility. Each contractor responsible for the construction of a main wind- or seismic force-resisting system, designated seismic system or a wind- or seismic force-resisting component listed in the statement of special inspections shall submit a written statement of responsibility to the building official and the owner or the owner’s authorized agent prior to the commencement of work on the system or component. The contractor’s statement of responsibility shall contain acknowledgement of awareness of the special requirements contained in the statement of special inspections.
1704.5 Submittals to the building official. In addition to the submittal of reports of special inspections and tests in accordance with Section 1704.2.4, reports and certificates shall be submitted by the owner or the owner’s authorized agent to the building official for each of the following:
Certificates of compliance for the fabrication of structural, load-bearing or lateral load-resisting members or assemblies on the premises of an approved fabricator in accordance with Section 1704.2.5.1.
Certificates of compliance for the seismic qualification of nonstructural components, supports and attachments in accordance with Section 1705.14.2.
Certificates of compliance for designated seismic systems in accordance with Section 1705.14.3.
Reports of preconstruction tests for shotcrete in accordance with ACI 318.
Certificates of compliance for open web steel joists and joist girders in accordance with Section 2207.5.
Reports of material properties verifying compliance with the requirements of AWS D1.4 for weldability as specified in Section 26.6.4 of ACI 318 for reinforcing bars in concrete complying with a standard other than ASTM A706 that are to be welded.
Reports of mill tests in accordance with Section 20.2.2.5 of ACI 318 for reinforcing bars complying with ASTM A615 and used to resist earthquake-induced flexural or axial forces in the special moment frames, special structural walls or coupling beams connecting special structural walls of seismic force-resisting systems in structures assigned to Seismic Design Category B, C, D, E or F.
1704.6 Structural observations. Where required by the provisions of Section 1704.6.1, the owner or the owner’s authorized agent shall employ a registered design professional to perform structural observations. The structural observer shall visually observe representative locations of structural systems, details and load paths for general conformance to the approved construction documents.
CBC § 312.1. High relevance — show source text
Exceptions:
- Special inspections and tests are not required for construction of a minor nature or as warranted by conditions in the jurisdiction as approved by the building official.
- Unless otherwise required by the building official, special inspections and tests are not required for Group U occupancies that are accessory to a residential occupancy including, but not limited to, those listed in Section 312.1.
- Special inspections and tests are not required for portions of structures designed and constructed in accordance with the cold-formed steel light-frame construction provisions of Section 2206.1.2 or the conventional light-frame construction provisions of Section 2308. [OSHPD 1R, 2 & 5] Not permitted by OSHPD.
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- The contractor is permitted to employ the approved agencies where the contractor is also the owner. [OSHPD 1R, 2 & 5] Not permitted by OSHPD. 5. [HCD 1] The provisions of Health and Safety Code Division 13, Part 6 and the California Code of Regulations, Title 25, Division 1, Chapter 3, commencing with Section 3000, shall apply to the construction and inspection of factory-built housing as defined in Health and Safety Code Section 19971.
1704.2.1 Special inspector qualifications. Prior to the start of the construction, the approved agencies shall provide written documentation to the building official demonstrating the competence and relevant experience or training of the special inspectors who will perform the special inspections and tests during construction. Experience or training shall be considered to be relevant where the documented experience or training is related in complexity to the same type of special inspection or testing activities for projects of similar complexity and material qualities. These qualifications are in addition to qualifications specified in other sections of this code.
The registered design professional in responsible charge and engineers of record involved in the design of the project are permitted to act as an approved agency and their personnel are permitted to act as special inspectors for the work designed by them, provided they qualify as special inspectors.
1704.2.2 Access for special inspection. The construction or work for which special inspection or testing is required shall remain accessible and exposed for special inspection or testing purposes until completion of the required special inspections or tests.
1704.2.3 Statement of special inspections. The applicant shall submit a statement of special inspections in accordance with Section 107.1 as a condition for permit issuance. This statement shall be in accordance with Section 1704.3.
Exception: A statement of special inspections is not required for portions of structures designed and constructed in accordance with the cold-formed steel light-frame construction provisions of Section 2206.1.2 or the conventional light-frame construction provisions of Section 2308. [OSHPD 1R, 2 & 5] Not permitted by OSHPD.
1704.2.4 Report requirement. Approved agencies shall keep records of special inspections and tests. The approved agency shall submit reports of special inspections and tests to the building official and to the registered design professional in responsible charge at frequencies required by the approved construction documents or building official. All reports shall describe the nature and extent of inspections and tests, the location where the inspections and tests were performed, and indicate that work inspected or tested was or was not completed in conformance to approved construction documents.
CBC § 2.1 Medium relevance — show source text
1704 A .2.1 Special inspector qualifications. Prior to the start of the construction, the approved agencies shall provide written documentation to the building official demonstrating the competence and relevant experience or training of the special inspectors who will perform the special inspections and tests during construction. Experience or training shall be considered to be relevant where the documented experience or training is related in complexity to the same type of special inspection or testing activities for projects of similar complexity and material qualities. These qualifications are in addition to qualifications specified in other sections of this code.
The registered design professional in responsible charge and engineers of record involved in the design of the project are permitted to act as an approved agency and their personnel are permitted to act as special inspectors for the work designed by them, provided they qualify as special inspectors.
1704 A .2.2 Access for special inspection. The construction or work for which special inspection or testing is required shall remain accessible and exposed for special inspection or testing purposes until completion of the required special inspections or tests.
1704 A .2.3 Statement of special inspections. The applicant shall submit a statement of special inspections prepared by the regis- tered design professional in general responsible charge in accordance with Section 107.1 as a condition for construction documents review . This statement shall be in accordance with Section 1704 A .3.
[DSA-SS, DSA-SS/CC] Reference to Section 107.1 shall be to the California Administrative Code instead.
1704 A .2.4 Report requirement. The inspector(s) of record and approved agencies shall keep records of special inspections and tests. The inspector of record and approved agency shall submit reports of special inspections and tests to the building official and to the registered design professional in responsible charge at frequencies required by the approved construction documents or building official as required by the California Administrative Code . All reports shall describe the nature and extent of inspections and tests, the location where the inspections and tests were performed, and indicate that work inspected or tested was or was not completed in conformance to approved construction documents . Discrepancies shall be brought to the immediate attention of the contractor for correction. If they are not corrected, the discrepancies shall be brought to the attention of the building official and to the registered design professional in responsible charge prior to the completion of that phase of the work. A final report documenting required special inspections and tests, and correction of any discrepancies noted in the inspections or tests, shall be submitted at a point in time agreed upon prior to the start of work by the owner or the owner’s authorized agent to the building official.
1704 A .2.5 Special inspection of fabricated items. Where fabrication of structural, load-bearing or lateral load-resisting members or assemblies is being conducted on the premises of a fabricator’s shop, special inspections of the fabricated items shall be performed during fabrication.
1704 A .2.5.1 Fabricator approval. Not permitted by DSA-SS, DSA-SS/CC or OSHPD.
1704 A .3 Statement of special inspections. Where special inspections or tests are required by Section 1705 A, the registered design professional in responsible charge shall prepare a statement of special inspections in accordance with Section 1704 A .3.1 for submittal by the applicant in accordance with Section 1704 A .2.3.
CBC § 7-115 Medium relevance — show source text
1704 A .1 General. Special inspections and tests, statements of special inspections, responsibilities of contractors, submittals to the building official and structural observations shall meet the applicable requirements of this section.
1704 A .2 Special inspections and tests. Where application is made to the building official for construction as specified in Section 105 the owner shall employ one or more approved agencies to provide special inspections and tests during construction on the types of work specified in Section 1705 A and identify the approved agencies to the building official. These special inspections and tests are in addition to the inspections by the building official that are identified in Section 110.
[OSHPD 1 & 4] The inspectors shall act under the direction of the architect or structural engineer or both, and be responsible to the Owner. Where the California Administrative Code (CAC) Section 7-115 (a) 2 permits construction documents to be prepared under the
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SPECIAL INSPECTIONS AND TESTS
responsible charge of a mechanical, electrical or civil engineer, inspectors shall be permitted to work under the direction of engineer in appropriate branch as permitted therein.
Exceptions:
- Special inspections and tests are not required for construction of a minor nature or as warranted by conditions in the jurisdiction as approved by the building official.
- [DSA-SS, DSA-SS/CC] Reference to Section 105 and Section 110 shall be to the California Administrative Code instead.
1704 A .2.1 Special inspector qualifications. Prior to the start of the construction, the approved agencies shall provide written documentation to the building official demonstrating the competence and relevant experience or training of the special inspectors who will perform the special inspections and tests during construction. Experience or training shall be considered to be relevant where the documented experience or training is related in complexity to the same type of special inspection or testing activities for projects of similar complexity and material qualities. These qualifications are in addition to qualifications specified in other sections of this code.
The registered design professional in responsible charge and engineers of record involved in the design of the project are permitted to act as an approved agency and their personnel are permitted to act as special inspectors for the work designed by them, provided they qualify as special inspectors.
1704 A .2.2 Access for special inspection. The construction or work for which special inspection or testing is required shall remain accessible and exposed for special inspection or testing purposes until completion of the required special inspections or tests.
1704 A .2.3 Statement of special inspections. The applicant shall submit a statement of special inspections prepared by the regis- tered design professional in general responsible charge in accordance with Section 107.1 as a condition for construction documents review . This statement shall be in accordance with Section 1704 A .3.
[DSA-SS, DSA-SS/CC] Reference to Section 107.1 shall be to the California Administrative Code instead.
1704 A .2.4 Report requirement. The inspector(s) of record and approved agencies shall keep records of special inspections and tests.
CBC § 2.4 Medium relevance — show source text
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
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SPECIAL INSPECTIONS AND TESTS
1704 A .4 Contractor responsibility. Each contractor responsible for the construction of a main wind- or seismic force-resisting system, installation of equipment/components requiring special seismic certification or a wind- or seismic force-resisting component listed in the statement of special inspections shall submit a written statement of responsibility to the building official and the owner or the owner’s authorized agent prior to the commencement of work on the system or component. The contractor’s statement of responsibility shall contain acknowledgement of awareness of the special requirements contained in the statement of special inspections. [DSA-SS, DSA-SS/CC] The contractor’s statement is required only when specified on the approved construction documents.
1704 A .5 Submittals to the building official. In addition to the submittal of reports of special inspections and tests in accordance with Section 1704 A .2.4, reports and certificates shall be submitted by the owner or the owner’s authorized agent to the building official for each of the following:
Reserved.
Reserved.
Certificates of compliance for equipment/components requiring special seismic certification in accordance with Section 1705 A .14.3.
Reports of preconstruction tests for shotcrete in accordance with ACI 318 and Section 1705A.3.9.2.
Certificates of compliance for open web steel joists and joist girders in accordance with Section 2207 A. 5.
Reports of material properties verifying compliance with the requirements of AWS D1.4 for weldability as specified in Section 26.6.4 of ACI 318 for reinforcing bars in concrete complying with a standard other than ASTM A706 that are to be welded.
Reports of mill tests in accordance with Section 20.2.2.5 of ACI 318 for reinforcing bars complying with ASTM A615 and used to resist earthquake-induced flexural or axial forces in the special moment frames, special structural walls or coupling beams connecting special structural walls of seismic force-resisting systems in structures assigned to Seismic Design Category D, E or F.
1704 A .6 Structural observations. The owner shall employ a registered design professional to perform structural observations. The structural observer shall visually observe representative locations of structural systems, details and load paths for general conformance to the approved construction documents. Structural observation does not include or waive the responsibility for the inspections in Section 110 or the special inspections in Section 1705 A or other sections of this code. Prior to the commencement of observations, the structural observer shall submit to the building official a written statement identifying the frequency and extent of structural observations. At the conclusion of the work included in the permit, the structural observer shall submit to the building official a written statement that the site visits have been made and identify any reported deficiencies that, to the best of the structural observer’s knowledge, have not been resolved.
[DSA-SS, DSA-SS/CC] Reference to Section 110 shall be to the California Administrative Code instead.
SECTION 1705 A —REQUIRED SPECIAL INSPECTIONS AND TESTS
CBC § 1705.14.3. Medium relevance — show source text
- Certificates of compliance for designated seismic systems in accordance with Section 1705.14.3.
- Reports of preconstruction tests for shotcrete in accordance with ACI 318.
- Certificates of compliance for open web steel joists and joist girders in accordance with Section 2207.5.
- Reports of material properties verifying compliance with the requirements of AWS D1.4 for weldability as specified in Section 26.6.4 of ACI 318 for reinforcing bars in concrete complying with a standard other than ASTM A706 that are to be welded.
- Reports of mill tests in accordance with Section 20.2.2.5 of ACI 318 for reinforcing bars complying with ASTM A615 and used to resist earthquake-induced flexural or axial forces in the special moment frames, special structural walls or coupling beams connecting special structural walls of seismic force-resisting systems in structures assigned to Seismic Design Category B, C, D, E or F.
1704.6 Structural observations. Where required by the provisions of Section 1704.6.1, the owner or the owner’s authorized agent shall employ a registered design professional to perform structural observations. The structural observer shall visually observe representative locations of structural systems, details and load paths for general conformance to the approved construction documents. Structural observation does not include or waive the responsibility for the inspections in Section 110 or the special inspections in Section 1705 or other sections of this code. Prior to the commencement of observations, the structural observer shall submit to the building official a written statement identifying the frequency and extent of structural observations. At the conclusion of the work included in the permit, the structural observer shall submit to the building official a written statement that the site visits have been made and identify any reported deficiencies that, to the best of the structural observer’s knowledge, have not been resolved.
1704.6.1 Structural observations for structures. Structural observations shall be provided for those structures where one or more of the following conditions exist:
- The structure is classified as Risk Category III or IV.
- The structure is a high-rise building.
- The structure is assigned to Seismic Design Category E, and is greater than two stories above grade plane.
- Such observation is required by the registered design professional responsible for the structural design.
- Such observation is specifically required by the building official.
SECTION 1705—REQUIRED SPECIAL INSPECTIONS AND TESTS
1705.1 General. Special inspections and tests of elements and nonstructural components of buildings and structures shall meet the applicable requirements of this section.
1705.1.1 Special cases. Special inspections and tests shall be required for proposed work that is, in the opinion of the building official, unusual in its nature, such as, but not limited to, the following examples:
- Construction materials and systems that are alternatives to materials and systems prescribed by this code.
- Unusual design applications of materials described in this code.
- Materials and systems required to be installed in accordance with additional manufacturer’s instructions that prescribe requirements not contained in this code or in standards referenced by this code.
17-6 2025 CALIFORNIA BUILDING CODE
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
SPECIAL INSPECTIONS AND TESTS
1705.2 Steel construction. The special inspections and nondestructive testing of steel construction in buildings, structures and portions thereof shall be in accordance with this section.
CBC § 1705A.8 Medium relevance — show source text
TABLE 1705A.8—REQUIRED SPECIAL INSPECTIONS AND TESTS OF CAST-IN-PLACE DEEP FOUNDATION ELEMENTS Col2 Col3 TYPE CONTINUOUS
SPECIAL INSPECTIONPERIODIC
SPECIAL INSPECTION1. Inspect drilling operations and maintain complete and accurate records for each element. X — 2. Verify placement locations and plumbness, confirm element diameters, bell diameters (if
applicable), lengths, embedment into bedrock (if applicable) and adequate end-bearing
strata capacity. Record concrete or grout volumes.X — 3. For concrete elements, perform tests and additional special inspections in accordance
with Section 1705_A_.3.In accordance with Section 1705_A_.3 In accordance with Section 1705_A_.3 �
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1705A.8.1 Micropile tests. Micropile preproduction and production load tests shall be in accordance with Section 1810A.3.10.4.
1705 A .9 Helical pile foundations. Continuous special inspections shall be performed during installation of helical pile foundations. The information recorded shall include installation equipment used, pile dimensions, tip elevations, final depth, final installation torque and other pertinent installation data as required by the registered design professional in responsible charge. The approved geotechnical report and the construction documents prepared by the registered design professional shall be used to determine compliance.
1705A.9.1 Helical pile tests. Helical pile preproduction and production load tests shall be in accordance with Section 1810A.3.1.5.1.
1705 A .10 Structural integrity of deep foundation elements. Whenever there is a reasonable doubt as to the structural integrity of a deep foundation element, an engineering assessment shall be required. The engineering assessment shall include tests for defects performed in accordance with ASTM D4945, ASTM D5882, ASTM D6760 or ASTM D7949, or other approved method.
1705 A .11 Fabricated items. Special inspections of fabricated items shall be performed in accordance with Section 1704 A .2.5.
1705 A .12 Special inspections for wind resistance. Special inspections for wind resistance specified in Sections 1705 A .12.1 through 1705 A .12.3, unless exempted by the exceptions to Section 1704 A .2, are required for buildings and structures constructed in the following areas:
- In wind Exposure Category B, where basic wind speed, V, is 150 mph (67 m/sec) or greater.
- In wind Exposure Category C or D, where basic wind speed, V, is 140 mph (62.6 m/sec) or greater.
1705 A .12.1 Structural wood. Continuous special inspection is required during field gluing operations of elements of the main windforce-resisting system. Periodic special inspection is required for nailing, bolting, anchoring and other fastening of elements of the main windforce-resisting system, including wood shear walls, wood diaphragms, drag struts, braces and hold-downs.
Frequently asked questions
Who must prepare the Statement of Special Inspections?
The registered design professional in responsible charge prepares the statement for projects that require special inspections; the building official may permit a qualified person to prepare it for work not designed by a registered design professional (§1704.3) .
What must special‑inspection reports include and who receives them?
Reports must describe the nature and extent of inspections and tests, the locations inspected, and state whether the work conforms to the approved documents; approved agencies submit these reports to the building official and the registered design professional, and a final report documenting required inspections and correction of discrepancies is required (§1704.2.4, §1704.5) .
When are structural observations required?
Structural observations are required where specified by the code or design professional — for example, Risk Category III/IV structures, high‑rise buildings, or other cases listed in §1704.6.1 — and a structural observer must submit a written statement of visits and any unresolved deficiencies (§1704.6, §1704.6.1) .
More in California Building Code
- Administration & Permits
- Energy Efficiency
- Existing Buildings
- Occupancy Classification & Use
- Hazardous Materials & Occupancies
- Types of Construction
- Fire-Resistance & Fire Safety
- Interior Finishes
- Means of Egress
- Accessibility
- Exterior Walls
- Roofing & Roof Assemblies
- Structural Design
- Special Inspections & Tests
- Foundations & Soils
- Concrete
- Masonry
- Steel
- Wood
- Elevators & Conveying Systems
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