Prefab ADUs can reduce design uncertainty—if you plan the site work correctly. Before choosing a model, confirm what’s included: interior finishes, appliances, panel requirements, and exterior tie-ins like stairs or skirting. Clarity here prevents budget creep. Permitting goes smoother when plans match site reality—utility locations, access, and code details—before anything is ordered. 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: https://lsfn.ly/home-improvement-services/adu-experts-design-build-in-la-5/>custom prefab adus. 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. 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. When in doubt, simplify—fewer custom details often means faster progress and cleaner results. 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.