ESB 5471 — Authorizing middle housing in unincorporated growth areas and unincorporated urban growth areas, certain limited areas of more intensive rural development, and fully contained communities.

What this bill does

Allows a fully planning county to authorize middle housing on each parcel that permits single-family residences in designated urban growth areas (UGAs) and limited areas of more intensive rural development (LAMIRDs). Limits any middle housing in a designated UGA or LAMIRD to four residential units per lot.

From the Washington State Legislature's nonpartisan staff bill analysis. Read the full analysis ↗

Floor votes

• House — Final Passage as Amended by the House · April 12, 2025
  90 yea · 4 nay · 4 not voting
• Senate — Final Passage as Amended by the House · April 21, 2025
  48 yea · 0 nay
• Senate — 3rd Reading & Final Passage · February 19, 2025
  48 yea · 0 nay · 1 not voting

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