Yuliia Bortna 10/8/26 Yuliia Bortna 10/8/26

Palo Alto ADU Rules (2026): Sizes, Fees, Permits, and Local Quirks

Palo Alto lets a single-family lot add an attached ADU, a detached ADU, and a junior ADU. Here are the 2026 sizes, setbacks, fees, and permit timeline, from the city's own code and data.

Palo Alto ADU Rules (2026): Sizes, Fees, Permits, and Local Quirks

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Here’s the whole process on one page.

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