California
Resources and information on home and building performance in the state of California
On this page, you’ll find the latest, state-specific advocacy and policy information, updates, and educational content.
California State Resources
State-specific downloads, links, and more
Contractor Toolkit: Attracting Business Using Search Engine Optimization (SEO)
Download the Contractor Toolkit to improve your local visibility and help you attract customers online.
BPA: Building Science Principles Course: A Free Resource for Educators
This introductory course, presented in slideshow format, is designed to be a starting point for those interested in any career in residential energy efficiency. The course provides learners with basic information on how homes work through the lens of building science.
Home Efficiency Rebates (HOMES) Program
Learn about the Home Efficiency Rebates (HOMES) Program focused on whole-house energy saving retrofits.
ACEEE: California leads the nation in energy efficiency
California tops the list in the ACEEE 2025 State Energy Efficiency Scorecard. Check it out!
HUD: Multifamily Utility Benchmarking Toolkit
This toolkit is a comprehensive guide to utility benchmarking for the multifamily sector and includes links to key resources and requirements, tools and reports, case studies, and FAQs.
DOE: WAP Guidelines for Home Energy Professionals
Guidelines for Home Energy Professionals including Standard Work Specifications for Home Energy Upgrades, and Home Energy Professional certifications along with accreditation of energy-efficiency training programs.
Energy Circle: Encircled Podcast: Talking Electrification with Zach Lawrence and Gabe Lieb of Efficiency First California
Listen to a discussion of the latest in California’s home electrification movement, including the state of rebate and incentive programs, and why what’s happening in California matters to contractors around the country.
Air Leakage Calculator
This tool will calculate CFM50 for any area of conditioned floor space.
ACEEE: State Scorecards
The State Scorecard serves as a benchmark for state efforts in terms of economic growth, securing environmental benefits, and increasing communities’ resilience in the face of the uncertain costs and supplies of necessary energy resources.
The White House: State IRA Fact Sheets
The White House released state fact sheets highlighting how the Inflation Reduction Act tackles the climate crisis in states across the country and how families and communities can benefit from a clean energy future.
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