ADU rules in Santa Rosa, CA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Santa Rosa actively promotes Accessory Dwelling Units under California ADU law and local Zoning Code Chapter 20-42. ADUs up to 1,200 sq ft are allowed on single-family lots with streamlined permitting.
Under California Government Code §65852.2 and Santa Rosa Zoning Code, ADUs are permitted on residential lots. Detached ADUs may be up to 1,200 square feet. Junior ADUs (JADUs) up to 500 square feet within an existing structure are also allowed. ADUs have reduced setback requirements (4 feet for rear and side yards). No additional parking is required if the property is within half a mile of transit. The city offers pre-approved ADU plans to expedite permitting. Impact fees are waived for ADUs under 750 square feet.
Unpermitted ADUs are subject to code enforcement. The city encourages retroactive permitting to bring existing units into compliance.
Santa Rosa, CA
Santa Rosa addresses barking dogs under its animal control and nuisance provisions. Persistent barking that disturbs neighbors is considered a public nuisanc...
Santa Rosa, CA
Santa Rosa regulates noise under City Code Chapter 17-16. Unreasonable noise that disturbs the peace of residential neighborhoods is prohibited, with stricte...
Santa Rosa, CA
Santa Rosa limits construction noise to daytime hours. Residential construction is generally permitted from 7 AM to 8 PM on weekdays and 8 AM to 6 PM on week...
Santa Rosa, CA
Santa Rosa restricts parking of commercial vehicles in residential zones. Vehicles over certain weight limits or with commercial equipment may not be stored ...
Santa Rosa, CA
Santa Rosa enforces a 72-hour parking limit on public streets. Vehicles may not remain parked in the same location for more than 72 consecutive hours. Posted...
Santa Rosa, CA
Santa Rosa restricts parking of recreational vehicles and boats on public streets. RVs and boats may not be stored on streets for extended periods and must c...
See how Santa Rosa's adu rules rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.