Built with intention.

We design and build high-quality ADUs with a simple, organized process—focused on durability, efficiency, and clean workmanship.

Our story

ADU1 was founded by Crystal and Josue, builders with backgrounds in construction and systems-based trades. They began building RVs, where efficiency, durability, and smart layouts mattered. After building their first ADU in the Bay Area, they now lead every project end-to-end—planning, permitting, construction, and final walkthrough—with Crystal focused on coordination and homeowner experience, and Josue leading technical systems and build quality.

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