adu seattle 

Factory-built ADUs shine when you want predictable specs and fewer decision points. Prefab often works best when access is easy and utilities are close. If your lot is tight or sloped, spend extra time on the site plan before committing. Design decisions get simpler when you’re honest about daily routines—storage, privacy, and easy-clean surfaces usually win. Ask for a site-responsibility checklist and price those line items: trenching distance, panel upgrades, water/sewer connection, and final grading. If you want a clear checklist for evaluating options, see: custom prefab adu. 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. When in doubt, simplify—fewer custom details often means faster progress and cleaner results. If you’re collecting bids, ask for a written scope with exclusions listed—this prevents misunderstandings later. If you’re collecting bids, ask for a written scope with exclusions listed—this prevents misunderstandings later. If you’re collecting bids, ask for a written scope with exclusions listed—this prevents misunderstandings later. When in doubt, simplify—fewer custom details often means faster progress and cleaner results.