---
type: "Bill"
title: "Concerning the creation of building codes for kit homes."
description: "Concerning the creation of building codes for kit homes."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2025-2026"
identifier: "SB 5552"
citation: "Washington SB 5552 (2025-2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["J. Wilson"]
version_count: 4
action_count: 36
vote_count: 3
first_action: "2025-01-28"
last_action: "2026-03-14"
source: "openstates"
source_identifier: "ocd-bill/2cf2ce15-fc50-4b19-a158-4dcc79171fc9"
source_url: "https://app.leg.wa.gov/billsummary/?BillNumber=5552&Year=2025&Initiative=false"
source_hash: "1b31e7d22886f2d253065ec6667452e92a210977bdc9599c1a61a7c8c51db8be"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-wa"]
---

# Washington SB 5552 (2025-2026) — Concerning the creation of building codes for kit homes.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Bills/5552.htm)
2. **Engrossed Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Bills/5552-S.E.htm)
3. **Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Bills/5552-S.htm)
4. **Substitute Passed Legislature** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Passed%20Legislature/5552-S.PL.htm)

## Votes

- 3rd Reading & Final Passage (#23) — **49–0** (pass) · upper
- 3rd Reading & Final Passage (#10) — **49–0** (pass) · upper
- 3rd Reading & Final Passage (#6) — **93–0** (pass) · lower

## Sponsors

- J. Wilson — primary (person)
- Braun — cosponsor (person)
- C. Wilson — cosponsor (person)
- Chapman — cosponsor (person)
- Christian — cosponsor (person)
- Cortes — cosponsor (person)
- Dozier — cosponsor (person)
- Fortunato — cosponsor (person)
- Frame — cosponsor (person)
- Gildon — cosponsor (person)
- Goehner — cosponsor (person)
- Holy — cosponsor (person)
- Krishnadasan — cosponsor (person)
- Liias — cosponsor (person)
- McCune — cosponsor (person)
- Nobles — cosponsor (person)
- Ramos — cosponsor (person)
- Shewmake — cosponsor (person)
- Short — cosponsor (person)
- Slatter — cosponsor (person)
- Warnick — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2025-01-28** First reading, referred to Local Government. `reading-1`
- **2025-02-06** Public hearing in the Senate Committee on Local Government at 1:30 PM.
- **2025-02-20** Executive action taken in the Senate Committee on Local Government at 1:30 PM.
- **2025-02-20** LGV - Majority; 1st substitute bill be substituted, do pass. `substitution`
- **2025-02-21** Passed to Rules Committee for second reading.
- **2025-03-03** Placed on second reading by Rules Committee. `reading-2`
- **2025-03-04** 1st substitute bill substituted (LGV 25). `substitution`
- **2025-03-04** Rules suspended. Placed on Third Reading. `reading-3`
- **2025-03-04** Third reading, passed; yeas, 49; nays, 0; absent, 0; excused, 0. `reading-3`
- **2025-03-06** First reading, referred to Local Government. `reading-1`
- **2025-03-26** Public hearing in the House Committee on Local Government at 8:00 AM.
- **2025-04-01** Executive action taken in the House Committee on Local Government at 11:00 AM.
- **2025-04-01** LG - Majority; do pass with amendment(s). `committee-passage-favorable`
- **2025-04-02** Referred to Rules 2 Review. `referral-committee`
- **2025-04-27** By resolution, returned to Senate Rules Committee for third reading.
- **2026-01-12** By resolution, reintroduced and retained in present status.
- **2026-01-13** Placed on third reading by Rules Committee. `reading-3`
- **2026-01-21** Rules suspended.
- **2026-01-21** Returned to second reading for amendment.
- **2026-01-21** Floor amendment(s) adopted.
- **2026-01-21** Rules suspended. Placed on Third Reading. `reading-3`
- **2026-01-21** Third reading, passed; yeas, 49; nays, 0; absent, 0; excused, 0. `reading-3`
- **2026-01-26** First reading, referred to Local Government. `reading-1`
- **2026-02-18** Public hearing in the House Committee on Local Government at 8:30 AM.
- **2026-02-20** Executive action taken in the House Committee on Local Government at 10:30 AM.
- **2026-02-20** LG - Majority; do pass. `committee-passage-favorable`
- **2026-02-23** Referred to Rules 2 Review. `referral-committee`
- **2026-02-25** Rules Committee relieved of further consideration. Placed on second reading. `reading-2`
- **2026-03-03** Rules suspended. Placed on Third Reading. `reading-3`
- **2026-03-03** Third reading, passed; yeas, 93; nays, 0; absent, 0; excused, 5. `reading-3`
- **2026-03-04** President signed. `passage`
- **2026-03-05** Speaker signed. `passage`
- **2026-03-09** Delivered to Governor. `executive-receipt`
- **2026-03-14** Governor signed. `executive-signature`
- **2026-03-14** Chapter 41, 2026 Laws. `became-law`
- **2026-03-14** Effective date 6/11/2026. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/2cf2ce15-fc50-4b19-a158-4dcc79171fc9`. Confidence: reported (aggregated from official Washington legislature records).