Washington 2025-2026 Regular Session Status: Enacted Bipartisan · 11 R · 10 D cosponsors

SB 5552 — Concerning the creation of building codes for kit homes.

Last action — Effective date 6/11/2026.

  1. ✓
    Introduced
  2. ✓
    In Committee
  3. ✓
    Passed Senate
  4. ✓
    Passed House
  5. ✓
    To Executive
  6. 6
    Enacted

This bill has been enacted into law. Introduced January 28, 2025. Enacted.

Signed by Governor Bob Ferguson (Democratic) on March 14, 2026.

Odds of enactment

High chance

Based on the sponsor, cosponsors, and committee posture, this bill has a high chance of becoming law.

Upgrade to see the exact probability and what's driving it.

A statistical estimate from our own model of past outcomes — an insight, not a guarantee. Policymaking is volatile.

Prognosis

Likely to advance 98% · high confidence

  • Enacted

    Current position in the legislative process.

  • 21 sponsors

    1 primary, 20 co-sponsors signed on.

  • Bipartisan support

    Sponsored across 2 parties (11 R · 10 D) — cross-party backing.

  • Cleared a recorded vote

    Passed 3 recorded votes so far.

Based on stage, sponsorship breadth, committee status, recorded votes, and cross-state momentum — a description of the observable signals, not a prediction.

Bill Text

What changed in the latest version

101 added · 93 removed

Plain-language change summary

The updated version of Senate Bill 5552 removed the term "engrossed substitute" from the title and modified the date it was first read, changing it from February 21, 2025, to January 28, 2025. While the main content of the bill remains the same, this change clarifies its early legislative timeline and improves its reference within official documents. This matters because establishing clear dates and titles helps streamline the legislative process and ensures accurate tracking of the bill's progress.

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Latest
ENGROSSED SUBSTITUTE SENATE BILL 5552 State of Washington 69th Legislature 2025 Regular Session By Senate Local Government (originally sponsored by Senators J.
S-0715.1 SENATE BILL 5552 State of Washington 69th Legislature 2025 Regular Session By Senators J.
Wilson, Slatter, Cortes, Liias, Frame, Krishnadasan, and Ramos) READ FIRST TIME 02/21/25.
Wilson, Slatter, Cortes, Liias, Frame, Krishnadasan, and Ramos Read first time 01/28/25.
Referred to Committee on Local Government.
and creating a new section.
creating a new section;
and declaring an emergency.
(2) "Approval," "approved," or "adopted," unless otherwise defined or otherwise indicated by context, means an affirmative vote p.
p.
1 ESSB 5552 by a majority of voting members of the council, committee, or advisory group present at the time of the vote.
1 SB 5552 (2) "Approval," "approved," or "adopted," unless otherwise defined or otherwise indicated by context, means an affirmative vote by a majority of voting members of the council, committee, or advisory group present at the time of the vote.
(((10))) (11) "Residential building permit" means a building permit issued by a city or a county to construct, enlarge, alter, repair, move, demolish, or change the occupancy of any building containing only dwelling units used for independent living of one or more persons including permanent provisions for living, sleeping, eating, cooking, and sanitation, and structures accessory to dwelling units, such as detached garages and storage buildings.
(((10))) (11) "Residential building permit" means a building permit issued by a city or a county to construct, enlarge, alter, repair, move, demolish, or change the occupancy of any building containing only dwelling units used for independent living of one or more persons including permanent provisions for living, sleeping, p.
p.
2 SB 5552 eating, cooking, and sanitation, and structures accessory to dwelling units, such as detached garages and storage buildings.
2 ESSB 5552 (((11))) (12) "State building code" means the codes adopted and amended by the council as follows:
(((11))) (12) "State building code" means the codes adopted and amended by the council as follows:
(1) The state building code council is instructed to perform rule making on the state building codes applicable to kit homes no later than March 31, 2027.
(1) The state building code council is instructed to perform rule making on the state building codes applicable to kit homes no later than December 31, 2025.
These codes must not impose costs greater than $150 per square foot to the original home buyer.
However, any updates must not impose costs to kit home construction exceeding $150 per square foot, adjusted by the consumer price index.
NEW SECTION.
Sec.
4.
This act is necessary for the immediate preservation of the public peace, health, or safety, or support of the state government and its existing public institutions, and takes effect immediately.
3 ESSB 5552
3 SB 5552
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Action History

  1. Effective date 6/11/2026.

  2. Chapter 41, 2026 Laws.

  3. Governor signed.

  4. Delivered to Governor.

  5. Speaker signed.

  6. President signed.

  7. Third reading, passed; yeas, 93; nays, 0; absent, 0; excused, 5.

  8. Rules suspended. Placed on Third Reading.

  9. Rules Committee relieved of further consideration. Placed on second reading.

  10. Referred to Rules 2 Review.

  11. LG - Majority; do pass.

  12. Executive action taken in the House Committee on Local Government at 10:30 AM.

  13. Public hearing in the House Committee on Local Government at 8:30 AM.

  14. First reading, referred to Local Government.

  15. Third reading, passed; yeas, 49; nays, 0; absent, 0; excused, 0.

  16. Rules suspended. Placed on Third Reading.

  17. Floor amendment(s) adopted.

  18. Returned to second reading for amendment.

  19. Rules suspended.

  20. Placed on third reading by Rules Committee.

  21. By resolution, reintroduced and retained in present status.

  22. By resolution, returned to Senate Rules Committee for third reading.

  23. Referred to Rules 2 Review.

  24. LG - Majority; do pass with amendment(s).

  25. Executive action taken in the House Committee on Local Government at 11:00 AM.

  26. Public hearing in the House Committee on Local Government at 8:00 AM.

  27. First reading, referred to Local Government.

  28. Third reading, passed; yeas, 49; nays, 0; absent, 0; excused, 0.

  29. Rules suspended. Placed on Third Reading.

  30. 1st substitute bill substituted (LGV 25).

  31. Placed on second reading by Rules Committee.

  32. Passed to Rules Committee for second reading.

  33. LGV - Majority; 1st substitute bill be substituted, do pass.

  34. Executive action taken in the Senate Committee on Local Government at 1:30 PM.

  35. Public hearing in the Senate Committee on Local Government at 1:30 PM.

  36. First reading, referred to Local Government.

Sponsors

Sponsorship breakdown

Export CSV (upgrade) →

1 sponsors · 20 co-sponsors · 130 not signed on

Sponsors (1)

Co-sponsors (20)

Not signed on (130)

130 members have not signed on to this bill.

Show all 130 →

"Not signed on" means a member has not sponsored or co-sponsored this bill — it does not imply opposition. Members flagged Voted No have a recorded No vote on this bill.

Whip count is in markup. Polling the chamber and every recorded vote this session. Only the first open is slow. It’s instant for you after this. Calling the roll · Tallying · Engrossing

Votes

3rd Reading & Final Passage (#6)

Passed 93 Yea · 0 Nay · 5 Other
Party YeaNayPresentNot Voting
Republican 37001
Democrat 56004
Total 93005
% of votes cast 95%0%0%5%
How each member voted (98)
Member Party Vote
Adam Bernbaum Democrat Yea
Adison Richards Democrat Yea
Adrian Cortes Democrat Yea
Alex Ramel Democrat Yea
Alicia Rule Democrat Yea
Amy Walen Democrat Yea
April Berg Democrat Not Voting
Beth Doglio Democrat Yea
Brandy Donaghy Democrat Yea
Brianna Thomas Democrat Yea
Chipalo Street Democrat Yea
Chris Stearns Democrat Yea
Cindy Ryu Democrat Yea
Clyde Shavers Democrat Yea
Dan Bronoske Democrat Yea
Darya Farivar Democrat Yea
Dave Paul Democrat Yea
David Hackney Democrat Not Voting
Davina Duerr Democrat Yea
Debra Entenman Democrat Yea
Debra Lekanoff Democrat Yea
Edwin Obras Democrat Yea
Gerry Pollet Democrat Yea
Greg Nance Democrat Yea
Jake Fey Democrat Yea
Jamila Taylor Democrat Yea
Janice Zahn Democrat Yea
Javier Valdez Democrat Yea
Joe Fitzgibbon Democrat Not Voting
Joe Timmons Democrat Yea
Julia Reed Democrat Yea
Kristine Reeves Democrat Yea
Larry Springer Democrat Yea
Lauren Davis Democrat Yea
Laurie Jinkins Democrat Yea
Lillian Ortiz-Self Democrat Yea
Lisa Callan Democrat Yea
Lisa Parshley Democrat Yea
Liz Berry Democrat Yea
Mari Leavitt Democrat Yea
Mary Fosse Democrat Yea
Melanie Morgan Democrat Yea
Mia Gregerson Democrat Yea
Monica Jurado Stonier Democrat Yea
My-Linh Thai Democrat Yea
Natasha Hill Democrat Yea
Nicole Macri Democrat Yea
Osman Salahuddin Democrat Yea
Roger Goodman Democrat Yea
Sharlett Mena Democrat Yea
Sharon Tomiko Santos Democrat Yea
Sharon Wylie Democrat Yea
Shaun Scott Democrat Yea
Shelley Kloba Democrat Yea
Steve Bergquist Democrat Yea
Steve Tharinger Democrat Not Voting
Strom Peterson Democrat Yea
Tarra Simmons Democrat Yea
Timm Ormsby Democrat Yea
Zach Hall Democrat Yea
Alex Ybarra Republican Yea
Andrew Barkis Republican Yea
Andrew Engell Republican Yea
April Connors Republican Yea
Brian Burnett Republican Yea
Carolyn Eslick Republican Yea
Chris Corry Republican Yea
Cyndy Jacobsen Republican Yea
Dan Griffey Republican Yea
David Stuebe Republican Yea
Deb Manjarrez Republican Yea
Drew Stokesbary Republican Yea
Ed Orcutt Republican Yea
Gloria Mendoza Republican Yea
Hunter Abell Republican Yea
Jenny Graham Republican Yea
Jeremie Dufault Republican Yea
Jim Walsh Republican Yea
Joe Schmick Republican Yea
Joel McEntire Republican Yea
John Ley Republican Yea
Joshua Penner Republican Yea
Kevin Waters Republican Yea
Mark Klicker Republican Yea
Mary Dye Republican Yea
Matt Marshall Republican Yea
Michael Keaton Republican Yea
Mike Steele Republican Yea
Mike Volz Republican Not Voting
Peter Abbarno Republican Yea
Rob Chase Republican Yea
Sam Low Republican Yea
Skyler Rude Republican Yea
Stephanie Barnard Republican Yea
Stephanie McClintock Republican Yea
Suzanne Schmidt Republican Yea
Tom Dent Republican Yea
Travis Couture Republican Yea

Official roll call →

3rd Reading & Final Passage (#23)

Passed 49 Yea · 0 Nay
Party YeaNayPresentNot Voting
Democrat 30000
Republican 19000
Total 49000
% of votes cast 100%0%0%0%
How each member voted (49)
Member Party Vote
Adrian Cortes Democrat Yea
Annette Cleveland Democrat Yea
Bob Hasegawa Democrat Yea
Claire Wilson Democrat Yea
Claudia Kauffman Democrat Yea
Deborah Krishnadasan Democrat Yea
Derek Stanford Democrat Yea
Drew Hansen Democrat Yea
Emily Alvarado Democrat Yea
Jamie Pedersen Democrat Yea
Javier Valdez Democrat Yea
Jesse Salomon Democrat Yea
Jessica Bateman Democrat Yea
John Lovick Democrat Yea
June Robinson Democrat Yea
Lisa Wellman Democrat Yea
Liz Lovelett Democrat Yea
Manka Dhingra Democrat Yea
Marcus Riccelli Democrat Yea
Marko Liias Democrat Yea
Mike Chapman Democrat Yea
Noel Frame Democrat Yea
Rebecca Saldaña Democrat Yea
Sharon Shewmake Democrat Yea
Steve Conway Democrat Yea
T'wina Nobles Democrat Yea
Tina Orwall Democrat Yea
Vandana Slatter Democrat Yea
Victoria Hunt Democrat Yea
Yasmin Trudeau Democrat Yea
Chris Gildon Republican Yea
Curtis King Republican Yea
Drew MacEwen Republican Yea
Jeff Holy Republican Yea
Jeff Wilson Republican Yea
Jim McCune Republican Yea
John Braun Republican Yea
Judy Warnick Republican Yea
Keith Goehner Republican Yea
Keith Wagoner Republican Yea
Leonard Christian Republican Yea
Mark Schoesler Republican Yea
Matt Boehnke Republican Yea
Nikki Torres Republican Yea
Paul Harris Republican Yea
Perry Dozier Republican Yea
Phil Fortunato Republican Yea
Ron Muzzall Republican Yea
Shelly Short Republican Yea

Official roll call →

3rd Reading & Final Passage (#10)

Passed 49 Yea · 0 Nay
Party YeaNayPresentNot Voting
Democrat 30000
Republican 19000
Total 49000
% of votes cast 100%0%0%0%
How each member voted (49)
Member Party Vote
Adrian Cortes Democrat Yea
Annette Cleveland Democrat Yea
Bill Ramos Democrat Yea
Bob Hasegawa Democrat Yea
Claire Wilson Democrat Yea
Claudia Kauffman Democrat Yea
Deborah Krishnadasan Democrat Yea
Derek Stanford Democrat Yea
Drew Hansen Democrat Yea
Emily Alvarado Democrat Yea
Jamie Pedersen Democrat Yea
Javier Valdez Democrat Yea
Jesse Salomon Democrat Yea
Jessica Bateman Democrat Yea
John Lovick Democrat Yea
June Robinson Democrat Yea
Lisa Wellman Democrat Yea
Liz Lovelett Democrat Yea
Manka Dhingra Democrat Yea
Marcus Riccelli Democrat Yea
Marko Liias Democrat Yea
Mike Chapman Democrat Yea
Noel Frame Democrat Yea
Rebecca Saldaña Democrat Yea
Sharon Shewmake Democrat Yea
Steve Conway Democrat Yea
T'wina Nobles Democrat Yea
Tina Orwall Democrat Yea
Vandana Slatter Democrat Yea
Yasmin Trudeau Democrat Yea
Chris Gildon Republican Yea
Curtis King Republican Yea
Drew MacEwen Republican Yea
Jeff Holy Republican Yea
Jeff Wilson Republican Yea
Jim McCune Republican Yea
John Braun Republican Yea
Judy Warnick Republican Yea
Keith Goehner Republican Yea
Keith Wagoner Republican Yea
Leonard Christian Republican Yea
Mark Schoesler Republican Yea
Matt Boehnke Republican Yea
Nikki Torres Republican Yea
Paul Harris Republican Yea
Perry Dozier Republican Yea
Phil Fortunato Republican Yea
Ron Muzzall Republican Yea
Shelly Short Republican Yea

Official roll call →

Subjects

housing
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Frequently asked questions

Who sponsors SB 5552?
SB 5552 is sponsored by Deborah Krishnadasan (Democrat), Noel Frame (Democrat), Marko Liias (Democrat), Vandana Slatter (Democrat), Claire Wilson (Democrat), Perry Dozier (Republican), Keith Goehner (Republican), Judy Warnick (Republican), Jim McCune (Republican), Jeff Holy (Republican), Mike Chapman (Democrat), Leonard Christian (Republican), Chris Gildon (Republican), Shelly Short (Republican), John Braun (Republican), T'wina Nobles (Democrat), Phil Fortunato (Republican), Sharon Shewmake (Democrat), Jeff Wilson (Republican), Bill Ramos (Democrat), and Adrian Cortes (Democrat).
What is the current status of SB 5552?
This bill has been enacted into law. Introduced January 28, 2025. Enacted.
Where can I track SB 5552?
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