Washington legislation · 2025-26 Regular Session
Washington HB2151: Factory built structures
Status: Signed into law, March 9, 2026
Adopting national standards for factory built housing and commercial structures.
What the bill says
An act Relating to adopting national standards for factory built housing and commercial structures; amending RCW 43.22.455, 43.22.470, and 43.22.480; and reenacting and amending RCW 43.22.450.
From the enrolled text:
AN ACT Relating to adopting national standards for factory built housing and commercial structures; amending RCW 43.22.455, 43.22.470, and 43.22.480; and reenacting and amending RCW 43.22.450. Sec. 1. RCW 43.22.450 and 2019 c 352 s 4 and 2019 c 165 s 2 are each reenacted and amended to read as follows: Whenever used in RCW 43.22.450 through 43.22.490: (1) "Department" means the Washington state department of labor and industries; (2) "Approved" means approved by the department; (3) "Factory built housing" means any structure, including a factory built tiny house with or without a chassis (wheels), designed primarily for human occupancy other than a manufactured or mobile home the structure or any room of which is either entirely or substantially prefabricated or assembled at a place other than a building site; (4) "Install" means the assembly of factory built housing or factory built commercial structures at a building site; (5) "Building site" means any tract, parcel or subdivision of land upon which factory built housing or a factory built commercial structure is installed or is to be installed; (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; (7) "Commercial structure" means a structure designed or used for human habitation, or human occupancy for …
Sponsors
- Deb Manjarrez (R) · primary sponsor
- Strom Peterson (D)
- Cindy Ryu (D)
- Alex Ramel (D)
- Beth Doglio (D)
- Sam Low (R)
- Janice Zahn (D)
- Sharon Wylie (D)
- Davina Duerr (D)
- Brianna Thomas (D)
- Mia Gregerson (D)
- Timm Ormsby (D)
Latest actions
- : Effective date 6/11/2026.
- : Chapter 3, 2026 Laws.
- : Governor signed.
- : Delivered to Governor.
- : President signed.
- : Speaker signed.
- : Third reading, passed; yeas, 49; nays, 0; absent, 0; excused, 0.
- : Rules suspended. Placed on Third Reading.
- : Placed on second reading by Rules Committee.
- : Passed to Rules Committee for second reading.
Votes
- 3rd Reading & Final Passage (February 28, 2026): 49 yea, 0 nay, passed
- Senate Committee on Labor & Commerce: Do pass (February 20, 2026): 8 yea, 0 nay, passed
- 3rd Reading & Final Passage (February 11, 2026): 95 yea, 0 nay, passed
- House Committee on Labor & Workplace Standards: The substitute bill be substituted therefor and the substitute bill do pass (January 23, 2026): 9 yea, 0 nay, passed
Subjects: LABOR AND INDUSTRIES, DEPARTMENT OF
Common questions
- What is HB2151?
- HB2151 is a bill in the Washington Legislature (2025-26 Regular Session): Factory built structures.
- What does HB2151 do?
- In its own words: An act Relating to adopting national standards for factory built housing and commercial structures; amending RCW 43.22.455, 43.22.470, and 43.22.480; and reenacting and amending RCW 43.22.450.
- What is the status of HB2151?
- Signed into law as of March 9, 2026. Latest action: Effective date 6/11/2026. (March 9, 2026).
- Who sponsored HB2151?
- Deb Manjarrez (R), with 11 co-sponsors.
- Where is the official record for HB2151?
- On the Washington Legislature website: https://app.leg.wa.gov/billsummary?BillNumber=2151&Year=2025
Source: official Washington record. Tracked by Delilah, AI for legislation across all 50 states and Congress.