Appendix G — FLOOD-RESISTANT CONSTRUCTION
G105 Permits — 2025 California Building Code
California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-10-19 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Building Code (Title 24, Part 2) § G105 · Effective January 1, 2026 · Official source: Building Standards Commission
G105.1 Required.¶
Any person, owner or owner’s authorized agent who intends to conduct any development in a flood hazard area shall first make application to the floodplain administrator and shall obtain the required permit.
G105.2 Application for permit.¶
The applicant shall file an application in writing on a form furnished by the floodplain administrator. Such application shall:
Identify and describe the development to be covered by the permit.
Describe the land on which the proposed development is to be conducted by legal description, street address or similar description that will readily identify and definitely locate the site.
Include a site plan showing the delineation of flood hazard areas, floodway boundaries, flood zones, design flood elevations, ground elevations, proposed fill and excavation and drainage patterns and facilities.
Include in subdivision proposals and other proposed developments with more than 50 lots or larger than 5 acres (20 234 m [2] ), base flood elevation data in accordance with Section 1612.3.1 if such data are not identified for the flood hazard areas estab lished in Section G103.2.
Indicate the use and occupancy for which the proposed development is intended.
Be accompanied by construction documents, grading and filling plans and other information deemed appropriate by the floodplain administrator.
State the valuation of the proposed work.
Be signed by the applicant or the applicant’s authorized agent.
G105.3 Validity of permit.¶
The issuance of a permit under this appendix shall not be construed to be a permit for, or approval of, any violation of this appendix or any other ordinance of the jurisdiction. The issuance of a permit based on submitted documents and information shall not prevent the floodplain administrator from requiring the correction of errors. The floodplain administrator is authorized to prevent occupancy or use of a structure or site that is in violation of this appendix or other ordinances of this jurisdiction.
G105.4 Expiration.¶
A permit shall become invalid if the proposed development is not commenced within 180 days after its issuance, or if the work authorized is suspended or abandoned for a period of 180 days after the work commences. Extensions shall be requested in writing and justifiable cause demonstrated. The floodplain administrator is authorized to grant, in writing, one or more extensions of time, for periods not more than 180 days each.
G105.5 Suspension or revocation.¶
The floodplain administrator is authorized to suspend or revoke a permit issued under this appendix wherever the permit is issued in error or on the basis of incorrect, inaccurate or incomplete information, or in violation of any ordinance or code of this jurisdiction.
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