adu-costs-2025 Articles

2025 Prefab ADU Costs: $80K to $250K Breakdown

Uncover the key drivers behind 2025 prefab ADU costs and installation timelines for backyard studios. This guide details price ranges, options for DIY elements versus full contractor services, and essential steps from permitting to final inspection. Homeowners gain practical insights to budget effectively, ensure regulatory compliance, and create lasting value through additional living or workspace.

By Cayla McCully

Oct 28, 2025

6 min read

ADU costs 2025

Cost Planning

Prefab ADU Costs Drop to $140K in 2025

In 2025, prefab ADUs start at $140,000 and range up to $320,000, delivering quick builds and solid investment returns. Factors like size, materials, and location drive variations, with projects typically completing in three to six months. Discover planning tips, installation essentials, and maintenance advice to maximize your backyard addition.

By Rod Kerby

Oct 23, 2025

5 min read

ADU costs 2025