Coverage · Puget Sound · Updated July 2026

HB 1110 middle housing, city by city

Washington's HB 1110 legalized 2–6 homes on most residential lots. Here is what each Puget Sound city Civexa covers allows — and where to get the exact number for a specific parcel.

Pick a city for its middle-housing rules, or run a report for any address to get the parcel-level answer: unit count, buildable envelope, pro forma, utilities, and permit path.

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37 cities covered

• Auburn — 4 units by right, up to 6 (King County)
• Bellevue — 4 units by right, up to 6 (King County)
• Bothell — 4 units by right, up to 6 (King County)
• Brier — 3 units per lot (flat) (Snohomish County)
• Burien — 3 units by right, up to 7 (King County)
• Covington — 2+ units per lot (scales with lot size) (King County)
• Des Moines — 4+ units per lot (scales with lot size) (King County)
• Edgewood — 2 units per lot (flat) (Pierce County)
• Edmonds — 2 units by right, up to 4 (Snohomish County)
• Everett — envelope / density-based (no fixed per-lot cap) (Snohomish County)
• Federal Way — 4 units by right, up to 6 (King County)
• Issaquah — 2 units by right, up to 4 (King County)
• Kenmore — 2 units by right, up to 4 (King County)
• Kent — 4 units by right, up to 6 (King County)
• Kirkland — 4 units by right, up to 6 (King County)
• Lake Forest Park — 2 units per lot (flat) (King County)
• Lake Stevens — 2 units by right, up to 4 (Snohomish County)
• Lakewood — 2 units by right, up to 4 (Pierce County)
• Lynnwood — 3 units by right, up to 4 (Snohomish County)
• Maple Valley — 2 units by right, up to 4 (King County)
• Marysville — 2 units by right, up to 4 (Snohomish County)
• Mercer Island — 2 units by right, up to 4 (King County)
• Mill Creek — 2+ units per lot (scales with lot size) (Snohomish County)
• Mountlake Terrace — 2 units by right, up to 6 (Snohomish County)
• Mukilteo — 2 units per lot (flat) (Snohomish County)
• Newcastle — 2+ units per lot (scales with lot size) (King County)
• Puyallup — 2 units by right, up to 4 (Pierce County)
• Redmond — 6 units by right, up to 8 (King County)
• Renton — 4 units by right, up to 6 (King County)
• Sammamish — 3 units by right, up to 6 (King County)
• SeaTac — 2 units by right, up to 4 (King County)
• Shoreline — 3 units by right, up to 4 (King County)
• Sumner — 2 units by right, up to 4 (Pierce County)
• Tacoma — envelope / density-based (no fixed per-lot cap) (Pierce County)
• Tukwila — 3 units by right, up to 5 (King County)
• University Place — 2 units by right, up to 4 (Pierce County)
• Woodinville — 2+ units per lot (scales with lot size) (King County)