California Department of Community Services & Development
California Weatherization Assistance Program (WAP) is available to homeowners and renters in Foster City, CA.
Federally funded weatherization services for low-income households to reduce energy costs and improve comfort. Services include insulation, air sealing, HVAC tune-ups, water heater upgrades, and minor repairs. No cost to eligible households.
Average weatherization package includes insulation, air sealing, and system upgrades
Verified against California Department of Community Services & Development's official page on 2026-06-17.
Data last verified 2026-06-09. How we verify our data.
In Foster City, CA, you can combine this program with other local help to cut your cost:
A grant-savvy contractor in Foster City, CA can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.
You will likely need a contractor to apply
Projects like this almost always need a licensed contractor, and many grants ask for a written estimate as part of your application. Lining up a contractor in Foster City early keeps your application moving.
Get matched with a contractorEach program sets its own contractor rules. Check the official program page for exact requirements.
A free program that lowers your energy bills by improving your home's energy efficiency (insulation, air sealing, heating system repair or replacement). It is income qualified and run through local agencies, and the California Department of Community Services and Development (CSD) administers it in California.
Steps to apply
Documents you will likely need
Requirements vary by program and locality. Confirm the exact rules on the official program page. We can help you prepare your paperwork, but you submit it yourself.
Deadline: Rolling applications
Ask us. It is free, and a real person answers within a business day.
Email us about this programUp to $9,000 in energy upgrades.
California Weatherization Assistance Program (WAP) is open to homeowners and renters in Foster City, CA. It prioritizes low-income households.
Apply directly with California Department of Community Services & Development using the official program link on this page or call (916) 376-8100. There is no middleman and no fee.
Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.
Rebates and discounts that stack on top of any grant. Most are free to use.
This is just one of many grants, rebates, and free programs available. Stack them together to maximize your savings.
See All Programs