Prefab ADUs Cost 15-30% Less Than Site-Built in 2025
Prefab ADUs average $240,000, compared to $320,000 for site-built equivalents, delivering 15-30% cost savings alongside quicker timelines and reliable budgeting. Site-built options enable superior customization and enhanced resale potential. Homeowners benefit from evaluating labor, permits, and site conditions to align choices with financial, aesthetic, and investment objectives.












