⚠️ This information is for educational purposes. Always verify current regulations with the Santa Rosa Planning Department before starting your project.
Santa Rosa ADU Regulations at a Glance
Here are the key zoning rules for Accessory Dwelling Units in Santa Rosa, California. These regulations apply as of 2026.
| Regulation | Requirement |
|---|---|
| Maximum Size | 1,200 sq ft |
| Property Setbacks | 4 ft rear, 4 ft side |
| Extra Parking Required | Not required |
| Owner Occupancy | Not required |
Additional Local Requirements
- Height limit: 16-18 ft
- Urban Growth Boundary constraints may apply
- Conversion of existing space encouraged
- Fire sprinklers may be required
📥 Get the Complete Santa Rosa ADU Cheat Sheet
To get the step-by-step permit checklist and the official local contacts, download the Complete Santa Rosa ADU Cheat Sheet.
Download the Santa Rosa PDF Guide — $12Frequently Asked Questions About ADUs in Santa Rosa
Can I build an ADU in Santa Rosa?
Yes, Santa Rosa allows ADUs under California state law and local zoning ordinances. [ADDITIONAL_FAQ_1]
How big can my ADU be in Santa Rosa?
The maximum size for an ADU in Santa Rosa is 1,200 square feet, subject to setback and lot coverage requirements.
Do I need a permit for an ADU in Santa Rosa?
Yes, all ADUs require a building permit from the Santa Rosa Building & Safety Department.
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