Prefab ADUs Cost $70K Less Than Site-Built in 2026
Prefab ADUs offer faster completion and lower upfront costs, while site built units provide full customization and higher long term value. This guide breaks down 2026 pricing, timelines, maintenance, and professional requirements, helping homeowners decide which approach best fits their property, budget, and goals for adding modern, flexible living space.
Cayla McCullyJune 5, 2026