dadu house 

A prefab ADU can feel like a shortcut, but the site still decides timeline and cost. 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. Small upgrades like better insulation, air sealing, and right-sized HVAC can deliver comfort you notice every day, not just on paper. 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: adu pre built. Good plans reduce rework; rework is where budgets quietly leak. Keep a short list of non-negotiables so decisions stay consistent as options multiply. Keep a short list of non-negotiables so decisions stay consistent as options multiply. A realistic schedule includes ordering lead times and inspection windows, not just a hopeful start date. Good plans reduce rework; rework is where budgets quietly leak. Good plans reduce rework; rework is where budgets quietly leak. If you’re collecting bids, ask for a written scope with exclusions listed—this prevents misunderstandings later. A realistic schedule includes ordering lead times and inspection windows, not just a hopeful start date.