Complete Guide to Building an ADU in California
Curious about how much it really costs to build an ADU in California? This guide covers everything you need to know—from construction and design expenses to permits, site prep, and hidden costs that often catch homeowners off guard. Whether you’re planning a garage conversion, detached unit, or addition, we break down average price ranges and what factors influence your final budget. Get a clear picture of what to expect financially so you can plan smarter and make informed decisions before starting your ADU project.