ADU Construction Costs: $150K to $400K in 2026
Understand the true expenses of building an ADU or granny flat in 2026, with costs spanning $150,000 to $400,000. This comprehensive guide details pricing elements, timelines, and essential steps, including permit navigation and professional versus DIY options, to help you maximize your property's potential.
Cayla McCullyJanuary 14, 2026