---
type: "Bill"
title: "Expanding housing options by easing barriers to the construction and use of accessory dwelling units."
description: "Expanding housing options by easing barriers to the construction and use of accessory dwelling units."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2023-2024"
identifier: "HB 1337"
citation: "Washington HB 1337 (2023-2024)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Gregerson"]
version_count: 3
action_count: 27
vote_count: 3
first_action: "2023-01-16"
last_action: "2023-05-08"
source: "openstates"
source_identifier: "ocd-bill/2aeda05c-f692-469a-ae5f-414d4e4d9d58"
source_url: "http://apps.leg.wa.gov/billinfo/summary.aspx?bill=1337&year=2023"
source_hash: "156bd36635ff4e21241270259a3a553acee520032419256882217d15b65ef952"
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 HB 1337 (2023-2024) — Expanding housing options by easing barriers to the construction and use of accessory dwelling units.

## 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/House%20Bills/1337.htm)
2. **Engrossed Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Bills/1337.E.htm)
3. **Passed Legislature** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Passed%20Legislature/1337.PL.htm)

## Votes

- 3rd Reading & Final Passage (#22) — **81–15** (pass) · lower
- Final Passage as Amended by the Senate (#22) — **85–11** (pass) · lower
- 3rd Reading & Final Passage as Amended by the Senate (#16) — **39–7** (pass) · upper

## Sponsors

- Gregerson — primary (person)
- Barkis — cosponsor (person)
- Bateman — cosponsor (person)
- Berry — cosponsor (person)
- Christian — cosponsor (person)
- Cortes — cosponsor (person)
- Doglio — cosponsor (person)
- Duerr — cosponsor (person)
- Fitzgibbon — cosponsor (person)
- Graham — cosponsor (person)
- Lekanoff — cosponsor (person)
- Macri — cosponsor (person)
- Ramel — cosponsor (person)
- Reed — cosponsor (person)
- Reeves — cosponsor (person)
- Simmons — cosponsor (person)
- Stonier — cosponsor (person)
- Taylor — cosponsor (person)
- Tharinger — cosponsor (person)
- Walen — cosponsor (person)

## Timeline

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

- **2023-01-16** First reading, referred to Housing. `reading-1`
- **2023-01-23** Public hearing in the House Committee on Housing at 1:30 PM.
- **2023-02-02** Executive action taken in the House Committee on Housing at 8:00 AM.
- **2023-02-02** HOUS - Majority; do pass. `committee-passage-favorable`
- **2023-02-02** Minority; without recommendation. `committee-passage-unfavorable`
- **2023-02-06** Referred to Rules 2 Review. `referral-committee`
- **2023-02-08** Placed on second reading by Rules Committee. `reading-2`
- **2023-03-02** Floor amendment(s) adopted.
- **2023-03-02** Rules suspended. Placed on Third Reading. `reading-3`
- **2023-03-02** Third reading, passed; yeas, 81; nays, 15; absent, 0; excused, 2. `reading-3`
- **2023-03-06** First reading, referred to Local Government, Land Use & Tribal Affairs. `reading-1`
- **2023-03-16** Public hearing in the Senate Committee on Local Government, Land Use & Tribal Affairs at 10:30 AM.
- **2023-03-28** Executive action taken in the Senate Committee on Local Government, Land Use & Tribal Affairs at 9:00 AM.
- **2023-03-28** LGLT - Majority; do pass with amendment(s). `committee-passage-favorable`
- **2023-03-29** Passed to Rules Committee for second reading.
- **2023-03-30** Placed on second reading by Rules Committee. `reading-2`
- **2023-04-06** Committee amendment(s) adopted as amended.
- **2023-04-06** Rules suspended. Placed on Third Reading. `reading-3`
- **2023-04-06** Third reading, passed; yeas, 39; nays, 7; absent, 0; excused, 3. `reading-3`
- **2023-04-14** House concurred in Senate amendments.
- **2023-04-14** Passed final passage; yeas, 85; nays, 11; absent, 0; excused, 2. `passage`
- **2023-04-17** Speaker signed. `passage`
- **2023-04-18** President signed. `passage`
- **2023-04-19** Delivered to Governor. `executive-receipt`
- **2023-05-08** Governor partially vetoed. `executive-veto-line-item`
- **2023-05-08** Chapter 334, 2023 Laws. `became-law`
- **2023-05-08** Effective date 7/23/2023. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/2aeda05c-f692-469a-ae5f-414d4e4d9d58`. Confidence: reported (aggregated from official Washington legislature records).