Washington 2025-2026 Regular Session Status: Passed Senate Bipartisan · 6 D · 1 R cosponsors

SB 6158 — Adopting national standards for factory built housing and commercial structures.

Last action — Senate Rules "X" file.

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

This bill has passed the Senate. Introduced January 15, 2026. It now moves to the second chamber.

Next likely step: consideration and a floor vote in the House.

Odds of enactment

Moderate chance

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

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

Prognosis

Advancing 54% · moderate confidence

  • Passed Senate

    Current position in the legislative process.

  • 7 sponsors

    1 primary, 6 co-sponsors signed on.

  • Bipartisan support

    Sponsored across 2 parties (6 D · 1 R) — cross-party backing.

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

64 added · 93 removed

Plain-language change summary

The updated version of SB 6158 now assigns more specific roles to qualified inspection agencies for overseeing housing and commercial structure inspections. Notably, it explicitly states that these agencies must be independent and disclose any potential conflicts of interest to maintain objectivity in their assessments. This change is important because it enhances the integrity of inspections, ensuring that safety and compliance are upheld without undue influence from the companies involved in the construction.

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S-4596.1 SUBSTITUTE SENATE BILL 6158 State of Washington 69th Legislature 2026 Regular Session By Senate Labor & Commerce (originally sponsored by Senators Goehner, Bateman, Frame, Liias, Nobles, Shewmake, and Trudeau;
Z-0492.1 SENATE BILL 6158 State of Washington 69th Legislature 2026 Regular Session By Senators Goehner, Bateman, Frame, Liias, Nobles, Shewmake, and Trudeau;
by request of Department of Labor & Industries) READ FIRST TIME 02/04/26.
by request of Department of Labor & Industries Read first time 01/15/26.
Referred to Committee on Labor & Commerce.
amending RCW 43.22.455, 43.22.470, and 43.22.480;
amending RCW 43.22.470 and 43.22.480;
1 SSB 6158 (6) "Local enforcement agency" means any agency of the governing body of any city, county, or state which enforces laws or ordinances governing the construction of buildings;
1 SB 6158 (6) "Local enforcement agency" means any agency of the governing body of any city, county, or state which enforces laws or ordinances governing the construction of buildings;
RCW 43.22.455 and 1973 1st ex.s.
c 22 s 2 are each amended to read as follows:
No factory built housing or factory built commercial structure shall be installed on a building site in this state after the effective date of the regulations adopted pursuant to RCW 43.22.480 unless it is approved and bears the insignia of approval of the department.
(1) Any factory built housing or factory built commercial structure bearing an insignia of approval of the department shall be deemed to comply with any laws, ordinances or regulations enacted by any city or county or any local enforcement agency which govern the manufacture and construction of factory built housing or factory built commercial structures or on-site housing.
(2) No factory built housing or factory built commercial structure which has been approved by the department shall be in any way modified prior to, or during installation by a manufacturer or installer unless approval of such modification is first made by the department.
(3) Department approval under RCW 43.22.450 through 43.22.490 is not required for a prefabricated enclosure for energy storage systems or electrical equipment associated with the generation, control, transformation, transmission, or distribution of energy installations under the ownership and exclusive control of an electric utility by established right where the enclosure entry is limited to qualified service personnel for maintenance, repair, or occasional monitoring of energy storage system units or electrical equipment and not occupied for other purposes.
Sec.
3.
p.
The department shall have the authority to delegate all or part of its duties of inspection to a local enforcement agency ((or a qualified inspection agency)).
2 SSB 6158 The department shall have the authority to delegate all or part of its duties of inspection to a local enforcement agency ((or a qualified inspection agency)).
4.
3.
for off-site construction planning, design, fabrication, and assembly;
for off-site construction planning, design, fabrication, and p.
2 SB 6158 assembly;
p.
(2) The department shall set a schedule of fees which will cover the costs incurred by the department in the administration and enforcement of RCW 43.22.450 through 43.22.490.
3 SSB 6158 (2) The department shall set a schedule of fees which will cover the costs incurred by the department in the administration and enforcement of RCW 43.22.450 through 43.22.490.
4 SSB 6158
3 SB 6158
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Action History

  1. Senate Rules "X" file.

  2. Placed on second reading by Rules Committee.

  3. Passed to Rules Committee for second reading.

  4. Minority; without recommendation.

  5. LC - Majority; 1st substitute bill be substituted, do pass.

  6. Executive action taken in the Senate Committee on Labor & Commerce at 10:30 AM.

  7. Public hearing in the Senate Committee on Labor & Commerce at 8:00 AM.

  8. First reading, referred to Labor & Commerce.

Sponsors

Sponsorship breakdown

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1 sponsors · 6 co-sponsors · 144 not signed on

Sponsors (1)

Co-sponsors (6)

Not signed on (144)

144 members have not signed on to this bill.

Show all 144 →

"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

Subjects

housing technology
Cross-referencing the record. Reading this bill against every other bill in the corpus by meaning, not keywords. Only the first open is slow. It’s instant for you after this. Matching · Ranking · Engrossing

Frequently asked questions

Who sponsors SB 6158?
SB 6158 is sponsored by Yasmin Trudeau (Democrat), Sharon Shewmake (Democrat), T'wina Nobles (Democrat), Marko Liias (Democrat), Noel Frame (Democrat), Jessica Bateman (Democrat), and Keith Goehner (Republican).
What is the current status of SB 6158?
This bill has passed the Senate. Introduced January 15, 2026. It now moves to the second chamber.
Where can I track SB 6158?
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