Washington Bill Aims to Boost Kit Homes

Legislation would fast-track building of smaller, affordable homes

Published on Feb. 18, 2026

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A new bill in Washington state is moving forward that would make it easier and more affordable for people to build smaller homes on their own using prefabricated "kit" housing. The bill is intended to address the state's housing affordability crisis by lowering barriers to constructing compact, cost-effective dwellings.

Why it matters

The high cost of housing and lack of affordable options has become a major issue in many parts of Washington, especially in urban areas. This bill is an attempt to provide more flexibility and accessibility for people to build their own homes using standardized, pre-engineered kits that can be quickly assembled.

The details

The proposed legislation would streamline the permitting process and reduce fees for homeowners who want to build kit homes, which are prefabricated housing units that can be delivered to a site and assembled. Supporters say this could make it much easier and more affordable for individuals to construct smaller, more efficient homes on their own property.

  • The bill is currently moving through the Washington state legislature.
  • If passed, the new law could take effect as early as January 2027.

The players

Washington State Legislature

The state's legislative body that is considering the kit homes bill.

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What they’re saying

“This legislation could be a game-changer for housing affordability in our state by empowering more people to build their own homes.”

— Rep. Jenna Wilson, State Representative (tdn.com)

What’s next

If passed, the bill would next head to the governor's desk for signature into law.

The takeaway

The proposed kit homes bill reflects a growing interest in more flexible, DIY-friendly housing solutions as a way to address the housing crisis in parts of Washington state and make homeownership more accessible.