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ADU Builds Cost $150K to $400K in 2025
In 2025, constructing an accessory dwelling unit (ADU) typically ranges from $150,000 to $400,000, with additional expenses for design, permits, and site preparation reaching up to 30% of the total. This comprehensive guide details budgeting essentials, comparisons between DIY and professional approaches, viable alternatives, and proven methods to reduce costs while maximizing long-term value.
By Eric Melton
5 min read