Washington State Weatherization Assistance Program

Washington State Department of Commerce

Available Weatherization

About This Program

Federally-funded weatherization program providing free energy efficiency improvements to income-qualified households in Washington State, including Bothell residents. Services include insulation, air sealing, furnace repair, and efficiency upgrades.

Free weatherization services averaging $8,000 per home

Official source site checked live on 2026-06-17.

Data last verified 2026-06-09. How we verify our data.

Key Details

  • Free weatherization services averaging $8,000
  • Available to renters and homeowners
  • Income at or below 200% federal poverty level
  • Includes insulation, air sealing, furnace work
  • Priority for seniors, persons with disabilities, families with children

How to Apply

Get free help applying Visit Official Program Page Track this program

(800) 290-3857

A grant-savvy contractor in Bothell, WA 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 Bothell early keeps your application moving.

Get matched with a contractor

Each program sets its own contractor rules. Check the official program page for exact requirements.

Your application paperwork

This is a free, federally funded program that lowers your energy bills by improving your home's energy efficiency. After you qualify (up to 200 percent of the federal poverty level, 60 percent of state median income, or 80 percent of area median income), a local agency does a free energy audit and installs measures at no cost. The Washington State Department of Commerce runs it through local weatherization agencies, so you apply through the agency that serves your area.

Steps to apply

  1. Confirm you qualify by income (up to 200 percent FPL, 60 percent SMI, or 80 percent AMI) and that you own or rent the home.
  2. Find and contact the local weatherization agency that serves your county (Commerce does not take applications directly).
  3. Complete the agency's intake application with your income, ownership, and household information.
  4. The agency does a free energy audit, then installs the approved measures at no cost to you.
Get the official form

Documents you will likely need

  • Proof of income for everyone in the household, or proof you receive qualifying assistance.
  • Proof you own or rent and live in the home (renters need the owner's written permission).
  • A recent utility bill for the home.
  • A government-issued photo ID.
Download this checklist (PDF)

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 year-round

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