---
type: "Bill"
title: "Concerning heat pumps in common interest communities."
description: "Concerning heat pumps in common interest communities."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2023-2024"
identifier: "SB 5973"
citation: "Washington SB 5973 (2023-2024)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Liias"]
version_count: 4
action_count: 26
vote_count: 2
first_action: "2024-01-04"
last_action: "2024-03-15"
source: "openstates"
source_identifier: "ocd-bill/89729da2-1676-4aff-9c7a-d2f8913299dd"
source_url: "http://apps.leg.wa.gov/billinfo/summary.aspx?bill=5973&year=2023"
source_hash: "defda5247c33265a2f047fe6494efaae8683a81efbc1cdfbfb53a44643b079d3"
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 5973 (2023-2024) — Concerning heat pumps in common interest communities.

## 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/2023-24/Htm/Bills/Senate%20Bills/5973.htm)
2. **Engrossed Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/Senate%20Bills/5973-S.E.htm)
3. **Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/Senate%20Bills/5973-S.htm)
4. **Substitute Passed Legislature** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/Senate%20Passed%20Legislature/5973-S.PL.htm)

## Votes

- 3rd Reading & Final Passage (#30) — **95–0** (pass) · lower
- 3rd Reading & Final Passage (#15) — **48–0** (pass) · upper

## Sponsors

- Liias — primary (person)
- Kuderer — cosponsor (person)
- Mullet — cosponsor (person)
- Nguyen — cosponsor (person)
- Nobles — cosponsor (person)
- Shewmake — cosponsor (person)
- Valdez — cosponsor (person)

## Timeline

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

- **2024-01-04** Prefiled for introduction. `filing`
- **2024-01-08** First reading, referred to Law & Justice. `reading-1`
- **2024-01-22** Public hearing in the Senate Committee on Law & Justice at 10:30 AM.
- **2024-01-25** Executive action taken in the Senate Committee on Law & Justice at 8:00 AM.
- **2024-01-25** LAW - Majority; 1st substitute bill be substituted, do pass. `substitution`
- **2024-01-25** Minority; without recommendation. `committee-passage-unfavorable`
- **2024-01-26** Passed to Rules Committee for second reading.
- **2024-02-06** Placed on second reading by Rules Committee. `reading-2`
- **2024-02-08** 1st substitute bill substituted (LAW 24). `substitution`
- **2024-02-08** Floor amendment(s) adopted.
- **2024-02-08** Rules suspended. Placed on Third Reading. `reading-3`
- **2024-02-08** Third reading, passed; yeas, 48; nays, 0; absent, 0; excused, 1. `reading-3`
- **2024-02-10** First reading, referred to Housing. `reading-1`
- **2024-02-14** Public hearing in the House Committee on Housing at 10:30 AM.
- **2024-02-19** Executive action taken in the House Committee on Housing at 1:30 PM.
- **2024-02-19** HOUS - Majority; do pass. `committee-passage-favorable`
- **2024-02-21** Referred to Rules 2 Review. `referral-committee`
- **2024-02-24** Rules Committee relieved of further consideration. Placed on second reading. `reading-2`
- **2024-02-27** Rules suspended. Placed on Third Reading. `reading-3`
- **2024-02-27** Third reading, passed; yeas, 95; nays, 0; absent, 0; excused, 3. `reading-3`
- **2024-02-28** President signed. `passage`
- **2024-02-29** Speaker signed. `passage`
- **2024-03-07** Delivered to Governor. `executive-receipt`
- **2024-03-15** Governor signed. `executive-signature`
- **2024-03-15** Chapter 128, 2024 Laws. `became-law`
- **2024-03-15** Effective date 6/6/2024. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/89729da2-1676-4aff-9c7a-d2f8913299dd`. Confidence: reported (aggregated from official Washington legislature records).