WA Leg - SB 5552 Concerning the creation of building codes for kit homes. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False 01 - January 28, 2025 - First reading, referred to Local Government. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Tue, 28 Jan 2025 00:00:00 -0800 01-January28,2025-Firstreading,referredtoLocalGovernment. 02 - February 6, 2025 - Public hearing in the Senate Committee on Local Government at 1:30 PM. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Thu, 06 Feb 2025 00:00:00 -0800 02-February6,2025-PublichearingintheSenateCommitteeonLocalGovernmentat1:30PM. 03 - February 20, 2025 - Executive action taken in the Senate Committee on Local Government at 1:30 PM. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Thu, 20 Feb 2025 00:00:00 -0800 03-February20,2025-ExecutiveactiontakenintheSenateCommitteeonLocalGovernmentat1:30PM. 04 - February 20, 2025 - LGV - Majority; 1st substitute bill be substituted, do pass. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Thu, 20 Feb 2025 00:00:00 -0800 04-February20,2025-LGV-Majority;1stsubstitutebillbesubstituted,dopass. 05 - February 21, 2025 - Passed to Rules Committee for second reading. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Fri, 21 Feb 2025 00:00:00 -0800 05-February21,2025-PassedtoRulesCommitteeforsecondreading. 06 - March 3, 2025 - Placed on second reading by Rules Committee. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Mon, 03 Mar 2025 00:00:00 -0800 06-March3,2025-PlacedonsecondreadingbyRulesCommittee. 07 - March 4, 2025 - 1st substitute bill substituted (LGV 25). https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Tue, 04 Mar 2025 00:00:00 -0800 07-March4,2025-1stsubstitutebillsubstituted(LGV25). 08 - March 4, 2025 - Rules suspended. Placed on Third Reading. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Tue, 04 Mar 2025 00:00:00 -0800 08-March4,2025-Rulessuspended.PlacedonThirdReading. 09 - March 4, 2025 - Third reading, passed; yeas, 49; nays, 0; absent, 0; excused, 0. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Tue, 04 Mar 2025 00:00:00 -0800 09-March4,2025-Thirdreading,passed;yeas,49;nays,0;absent,0;excused,0. 10 - March 6, 2025 - First reading, referred to Local Government. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Thu, 06 Mar 2025 00:00:00 -0800 10-March6,2025-Firstreading,referredtoLocalGovernment. 11 - March 26, 2025 - Public hearing in the House Committee on Local Government at 8:00 AM. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Wed, 26 Mar 2025 00:00:00 -0700 11-March26,2025-PublichearingintheHouseCommitteeonLocalGovernmentat8:00AM. 12 - April 1, 2025 - Executive action taken in the House Committee on Local Government at 11:00 AM. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Tue, 01 Apr 2025 00:00:00 -0700 12-April1,2025-ExecutiveactiontakenintheHouseCommitteeonLocalGovernmentat11:00AM. 13 - April 1, 2025 - LG - Majority; do pass with amendment(s). https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Tue, 01 Apr 2025 00:00:00 -0700 13-April1,2025-LG-Majority;dopasswithamendment(s). 14 - April 2, 2025 - Referred to Rules 2 Review. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Wed, 02 Apr 2025 00:00:00 -0700 14-April2,2025-ReferredtoRules2Review. 15 - April 27, 2025 - By resolution, returned to Senate Rules Committee for third reading. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Sun, 27 Apr 2025 00:00:00 -0700 15-April27,2025-Byresolution,returnedtoSenateRulesCommitteeforthirdreading. 16 - January 12, 2026 - By resolution, reintroduced and retained in present status. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Mon, 12 Jan 2026 00:00:00 -0800 16-January12,2026-Byresolution,reintroducedandretainedinpresentstatus. 17 - January 13, 2026 - Placed on third reading by Rules Committee. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Tue, 13 Jan 2026 00:00:00 -0800 17-January13,2026-PlacedonthirdreadingbyRulesCommittee. 18 - January 21, 2026 - Rules suspended. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Wed, 21 Jan 2026 00:00:00 -0800 18-January21,2026-Rulessuspended. 19 - January 21, 2026 - Returned to second reading for amendment. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Wed, 21 Jan 2026 00:00:00 -0800 19-January21,2026-Returnedtosecondreadingforamendment. 20 - January 21, 2026 - Floor amendment(s) adopted. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Wed, 21 Jan 2026 00:00:00 -0800 20-January21,2026-Flooramendment(s)adopted. 21 - January 21, 2026 - Rules suspended. Placed on Third Reading. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Wed, 21 Jan 2026 00:00:00 -0800 21-January21,2026-Rulessuspended.PlacedonThirdReading. 22 - January 21, 2026 - Third reading, passed; yeas, 49; nays, 0; absent, 0; excused, 0. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Wed, 21 Jan 2026 00:00:00 -0800 22-January21,2026-Thirdreading,passed;yeas,49;nays,0;absent,0;excused,0. 23 - January 26, 2026 - First reading, referred to Local Government. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Mon, 26 Jan 2026 00:00:00 -0800 23-January26,2026-Firstreading,referredtoLocalGovernment. 24 - February 18, 2026 - Public hearing in the House Committee on Local Government at 8:30 AM. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Wed, 18 Feb 2026 00:00:00 -0800 24-February18,2026-PublichearingintheHouseCommitteeonLocalGovernmentat8:30AM. 25 - February 20, 2026 - Executive action taken in the House Committee on Local Government at 10:30 AM. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Fri, 20 Feb 2026 00:00:00 -0800 25-February20,2026-ExecutiveactiontakenintheHouseCommitteeonLocalGovernmentat10:30AM. 26 - February 20, 2026 - LG - Majority; do pass. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Fri, 20 Feb 2026 00:00:00 -0800 26-February20,2026-LG-Majority;dopass. 27 - February 23, 2026 - Referred to Rules 2 Review. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Mon, 23 Feb 2026 00:00:00 -0800 27-February23,2026-ReferredtoRules2Review. 28 - February 25, 2026 - Rules Committee relieved of further consideration. Placed on second reading. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Wed, 25 Feb 2026 00:00:00 -0800 28-February25,2026-RulesCommitteerelievedoffurtherconsideration.Placedonsecondreading. 29 - March 3, 2026 - Rules suspended. Placed on Third Reading. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Tue, 03 Mar 2026 00:00:00 -0800 29-March3,2026-Rulessuspended.PlacedonThirdReading. 30 - March 3, 2026 - Third reading, passed; yeas, 93; nays, 0; absent, 0; excused, 5. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Tue, 03 Mar 2026 00:00:00 -0800 30-March3,2026-Thirdreading,passed;yeas,93;nays,0;absent,0;excused,5. 31 - March 4, 2026 - President signed. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Wed, 04 Mar 2026 00:00:00 -0800 31-March4,2026-Presidentsigned. 32 - March 5, 2026 - Speaker signed. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Thu, 05 Mar 2026 00:00:00 -0800 32-March5,2026-Speakersigned. 33 - March 9, 2026 - Delivered to Governor. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Mon, 09 Mar 2026 00:00:00 -0700 33-March9,2026-DeliveredtoGovernor. 34 - March 14, 2026 - Governor signed. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Sat, 14 Mar 2026 00:00:00 -0700 34-March14,2026-Governorsigned. 35 - March 14, 2026 - Chapter 41, 2026 Laws. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Sat, 14 Mar 2026 00:00:00 -0700 35-March14,2026-Chapter41,2026Laws. 36 - March 14, 2026 - Effective date 6/11/2026. https://app.leg.wa.gov/billsummary?Year=2025&BillNumber=5552&Initiative=False Bill Description - Concerning the creation of building codes for kit homes. Sat, 14 Mar 2026 00:00:00 -0700 36-March14,2026-Effectivedate6/11/2026.