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ADU Costs Hit $150K-$350K With 50-100% ROI in 2026
In 2026, constructing an accessory dwelling unit (ADU) typically costs between $150,000 and $350,000, offering a potential return on investment of 50 to 100 percent via increased property value or rental revenue. This guide examines how design decisions, site specifics, and budgeting practices impact expenses, project timelines, and financial outcomes. Explore ADU types to determine the best option for your property, ensuring maximum long-term value and lifestyle benefits.
By Susan Weiland
4 min read