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.
DOE: State WAP Programs – Interactive Map
Read about your state's Weatherization assistance programs and how homeowners can apply for their services.
DOE: Free Building Science Calculators for Residential Energy Efficiency Professionals
The RED Calc Free and RED Calc Pro web app entire suite of software tools is now free for all to use through the WAP program.
Efficiency First CA Blog
Check out the Efficiency First CA Blog, a great resource for energy efficiency contractors.
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.
Weatherization Installer Job Aids and Single-Family Interactive 3D House
Weatherization job aids are step-by-step visual guides created to assist home energy professionals with effective, durable, and safe energy efficiency upgrades.
Get Involved
To get involved at the state level or share feedback, complete this form. If you have a specific question, our state outreach team will contact you shortly. Otherwise, you'll be added to receive state-specific emails and information.
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