Hayward, CA Building Safety: Green Building Code (2026)

110(f) as any privately funded building permit application for new construction, additions, or remodels over 500 square feet on residential property, or 1,000 square feet or more of new or remodeled commercial space. 140 requires new single-family and multi-family residential Covered Projects to be GreenPoint Rated, the Build It Green checklist system, and to fully document compliance with the California Building Energy Efficiency Standard (Title 24, Part 6) before the City will issue a Certificate of Occupancy, which must state the project complies with the ordinance.

Residential remodels and additions over 500 square feet only have to submit the GreenPoint Rated Existing Homes Checklist showing which items were incorporated, not achieve full certification. 1 by sourcing at least 1 percent or 1 kilowatt of power from renewables, or demonstrate an overall 5 percent energy budget reduction using the performance method. New commercial construction must exceed the 2008 Title 24 Building Energy Efficiency Standards by at least 15 percent using the performance method, verified by City plan-check staff comparing time-dependent-valuation energy calculations to the Title 24 standard building.

120 exempts historical buildings and foundation, fire-damage, termite, or accessibility repairs, and lets the Building Official grant a hardship exemption capping compliance cost at 20 percent of construction cost for projects under $50,000 that can show full compliance would exceed that share.