seattle adu requirements 

An ADU is a small build with full-size decisions—site, utilities, comfort, and long-term use all matter. Good ADU layouts win on function—compact kitchens that still work, smart storage, and a bathroom that doesn’t feel like an afterthought. Permitting goes smoother when plans match site reality—utility locations, access, and code details—before anything is ordered. Keep decisions predictable by locking major selections early (windows, doors, cabinetry, fixtures) and using a clear change-order process for anything that shifts after work begins. For a clear overview and a sensible starting checklist, see: adu builds. Good plans reduce rework; rework is where budgets quietly leak. Keep a short list of non-negotiables so decisions stay consistent as options multiply. When in doubt, simplify—fewer custom details often means faster progress and cleaner results. When in doubt, simplify—fewer custom details often means faster progress and cleaner results. A realistic schedule includes ordering lead times and inspection windows, not just a hopeful start date. If you’re collecting bids, ask for a written scope with exclusions listed—this prevents misunderstandings later. Good plans reduce rework; rework is where budgets quietly leak. When in doubt, simplify—fewer custom details often means faster progress and cleaner results.