HERS Raters in Ontario, CA

Title 24 Compliance in Ontario, CA

All new residential and commercial construction in Ontario, California must comply with Title 24, the California Building Energy Efficiency Standards. This includes HERS (Home Energy Rating System) verification for new homes and major renovations, ECC (Energy Code Compliance) verification for applicable projects, and acceptance testing for mechanical systems.

Title 24 raters in Ontario are certified professionals who perform field inspections to verify that a building's energy systems — including HVAC, insulation, windows, and lighting — meet California's requirements. Without a certified rater's sign-off, a building permit cannot be finalized.

Whether you're a contractor, builder, or homeowner in Ontario, finding a qualified local rater early in your project can save time and avoid costly delays. Use our directory to find HERS raters and ECC raters serving Ontario and the broader San Bernardino County area.