Accessory Dwelling Units

An Accessory Dwelling Unit (ADU) is an attached or detached residential dwelling, located on the same parcel as an existing single-family dwelling, that provides complete independent living facilities, including sleeping, cooking, bathing, and sanitation.

As of January 1, 2017, Santa Rosa Zoning Code Section 20-42.130 and that portion of 20-36.040 (parking) pertaining to accessory dwelling units are superseded by state law. The new laws create specific exceptions for parking, setbacks, and some utility fees. City staff have prepared guidance for ADU development until City ordinances implementing state law are enacted. Click to view the interim guidance document.

The City of Santa Rosa is preparing an amendment to the Zoning Code to comply with the new law and to incentivize the construction of ADUs. In January, a community meeting was announced through social media and City outreach groups such as the Community Advisory Board. The community meeting was held on February 8, 2017, with over 100 attendees. City staff continues to collect feedback and evaluate policy options. Future meetings will be announced via email.  Please contact Eric Gage at to be placed on the notification list. 

Please send your comments on the following topics being considered for revision include:

  • Parking
  • Setbacks and Other Development Standards
  • Dwelling Size
  • Number of Bedrooms
  • Owner Occupancy Deed Restrictions
  • Short-term Rental Restrictions
  • Utility Fees

City staff have prepared a discussion draft of the zoning code revisions, available here.

Please send comments or questions to Eric Gage, the project planner at or 707-543-4351.

  1. Eric Gage

    City Planner
    Phone: 707-543-4351