Costa Mesa, CA Building Safety: Green Building Code (2026)

Section 5-1 folds the 2025 California Green Building Standards Code into the same adoption clause that brings in the Building, Residential, Fire, Existing Building, Wildland-Urban Interface, Plumbing, Mechanical, Electrical, and Energy Codes, all subject to the modifications set out in Chapter I of Title 5. Together these codes constitute the Building Regulations of the City of Costa Mesa. The building official enforces the Green Building Standards Code under Section 5-2, and where the California Code of Regulations or State Building Standards Code differs from Costa Mesa's local amendments, the state regulation prevails.

Title 5 does not carry a separate chapter of local CALGreen amendments beyond the base adoption, so the mandatory and voluntary measures in the state code apply as published for residential and nonresidential projects reviewed through the standard building permit process under Section 5-10. A copy of the adopted Green Building Standards Code is on file in the building official's office under Health and Safety Code Section 18942(d)(1) for public inspection, and, notwithstanding the code's own fee provisions, no green building plan review or inspection fee takes effect until the city council sets it by resolution under Government Code Sections 66016 and 66020.

Project applicants submit CALGreen compliance documentation with their building permit plan set for the building official to review alongside the rest of the construction code submittal.