Seattle DADU & ADU Guides
Practical guides for Seattle homeowners evaluating DADU and ADU feasibility. Updated for 2026 law.
Seattle Pre-Approved DADU Standard Plans That Can Save You Weeks on Permitting
Pre-approved doesn't mean pre-feasible. Here's the complete fact-checked guide to Seattle's standard DADU plans, lot eligibility, permit timelines, and the site risks that still matter.
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Can I Build a DADU in Seattle? 2026 Homeowner Checklist
Zoning is only the first question. Here's the full checklist — setbacks, trees, utilities, drainage, access, and the 7 things that actually decide DADU feasibility.
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Get the Seattle DADU Pro Guide
Before you hire an architect or pull a permit, understand what Seattle's current rules say about your specific lot. $55 — PDF by email.
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