Does Issaquah offer pre-approved ADU plans?
✓ Verified against code · August 19, 2026
No. Issaquah has no pre-approved or stock ADU plan program, according to the city's own ADU FAQ. Every ADU, whether attached or detached, goes through standard Level 1 administrative review and a building permit like a custom design. If you want the faster, discounted path some neighboring cities offer through vetted plan sets, you will not find it in Issaquah — budget the same design and review time regardless of plan source.
Citation: City ADU page + FAQ
How current is this?
Issaquah’s ADU rules run under LUC 18.500.090 (Issaquah Land Use Code) (Ordinances 3092 / 3093). Issaquah adopted its ADU package (Ord 3092) and parking overhaul (Ord 3093) together in May 2025, alongside its middle-housing ordinance. Unusually for the region, Issaquah publishes actual permit review-time targets. We verified this answer against primary sources on August 19, 2026, and every change we catch is logged in the changelog.
More Issaquah ADU questions
- How big can an Issaquah ADU be?
- How long does an Issaquah ADU permit take?
- Do I need parking for an Issaquah ADU?
- Can I sell an Issaquah ADU separately?
- Can my ADU share the house's water meter?
All Issaquah ADU rules → · Compare Washington cities →
Not legal advice — lot-specific overlays can change the answer for your parcel. The citation above points at the governing code section; check it, or ask the city to confirm.