---
type: "Bill"
title: "Amending the county population threshold for counties that may exempt from taxation the value of accessory dwelling units to incentivize rental to low-income households."
description: "Amending the county population threshold for counties that may exempt from taxation the value of accessory dwelling units to incentivize rental to low-income households."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2025-2026"
identifier: "SB 5529"
citation: "Washington SB 5529 (2025-2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Gildon"]
version_count: 3
action_count: 24
vote_count: 2
first_action: "2025-01-27"
last_action: "2025-05-07"
source: "openstates"
source_identifier: "ocd-bill/1d4db7e7-75ee-4d61-8fab-cf9ea41f627b"
source_url: "https://app.leg.wa.gov/billsummary/?BillNumber=5529&Year=2025&Initiative=false"
source_hash: "b0c7d63740244366a52d713b76e160985d2ce56d6c63907e1b5024d8a42c770c"
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 5529 (2025-2026) — Amending the county population threshold for counties that may exempt from taxation the value of accessory dwelling units to incentivize rental to low-income households.

## 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/5529.htm)
2. **Engrossed Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Bills/5529.E.htm)
3. **Passed Legislature** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Passed%20Legislature/5529.PL.htm)

## Votes

- 3rd Reading & Final Passage (#22) — **48–0** (pass) · upper
- 3rd Reading & Final Passage (#15) — **89–8** (pass) · lower

## Sponsors

- Gildon — primary (person)
- Gildon — cosponsor (person)

## Timeline

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

- **2025-01-27** First reading, referred to Ways & Means. `reading-1`
- **2025-02-04** Public hearing in the Senate Committee on Ways & Means at 4:00 PM.
- **2025-02-13** Executive action taken in the Senate Committee on Ways & Means at 4:00 PM.
- **2025-02-13** WM - Majority; do pass. `committee-passage-favorable`
- **2025-02-13** Minority; without recommendation. `committee-passage-unfavorable`
- **2025-02-18** Passed to Rules Committee for second reading.
- **2025-03-05** Placed on second reading by Rules Committee. `reading-2`
- **2025-03-11** Floor amendment(s) adopted.
- **2025-03-11** Rules suspended. Placed on Third Reading. `reading-3`
- **2025-03-11** Third reading, passed; yeas, 48; nays, 0; absent, 0; excused, 1. `reading-3`
- **2025-03-13** First reading, referred to Finance. `reading-1`
- **2025-03-21** Public hearing in the House Committee on Finance at 1:30 PM.
- **2025-04-04** Executive action taken in the House Committee on Finance at 8:00 AM.
- **2025-04-04** FIN - Majority; do pass. `committee-passage-favorable`
- **2025-04-07** Referred to Rules 2 Review. `referral-committee`
- **2025-04-14** Rules Committee relieved of further consideration. Placed on second reading. `reading-2`
- **2025-04-15** Rules suspended. Placed on Third Reading. `reading-3`
- **2025-04-15** Third reading, passed; yeas, 89; nays, 8; absent, 0; excused, 1. `reading-3`
- **2025-04-18** President signed. `passage`
- **2025-04-18** Speaker signed. `passage`
- **2025-04-22** Delivered to Governor. `executive-receipt`
- **2025-05-07** Governor signed. `executive-signature`
- **2025-05-07** Chapter 207, 2025 Laws. `became-law`
- **2025-05-07** Effective date 7/27/2025. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/1d4db7e7-75ee-4d61-8fab-cf9ea41f627b`. Confidence: reported (aggregated from official Washington legislature records).