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Local ADU Rules

City of Calistoga

Last Updated August 26, 2024

ADU Contact:

Building Division: building@ci.calistoga.ca.us

Planning Division: planning&building@ci.calistoga.ca.us

Disclaimer: standards and process may vary. Consultation with the contact is recommended before starting any project.

Standards	Details
Zones allowed	Rural Residential (RR) Rural Residential-Hillside (RR-H) One-Family Residential (R-1) Two-Family Residential (R-2) Multi-Family Residential (R-3). *Note, per state law an ADU is allowed on ANY property where a residence is permitted.
Lot Restrictions	None
Minimum Lot Size	None
Min/Max ADU Size	Detached: Maximum of 850 sf for a studio or one-bedroom ADU. Maximum of 1,000 sf for an ADU with more than one bedroom. Attached: Maximum of 50 percent of the existing living area.
ADU Building Height	16 feet for detached ADUs.
Setbacks	4 feet rear and side yards. No additional setback if converted from an existing accessory structure.
Parking Requirements	None
Owner Occupancy	The property owner of a single-family residence with a JADU must reside in one of the units.
Sample fees from recent permits	336 SF Attached ADU Garage conversion Total: $593.99 *Fees are specific to each project and will vary. Fees change regularly. These are provided as examples only.
Other requirements	Design must be compatible with the primary dwelling and minimize view impacts to neighboring properties Window and door openings must be designed to maximize privacy
Process	Approved through building permit and reviewed concurrently by the Planning Department.
Exceptions	None

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Make sure you check out our Learning the Rules page for more step-by-step details