Grading & Drainage: Santa Rosa vs Sonoma
How do grading & drainage rules compare between Santa Rosa, CA and Sonoma, CA?
Santa Rosa, CA
Sonoma County
No data available yet for Santa Rosa.
Sonoma, CA
Sonoma County
A grading permit is required for excavation, grading, and fill in Sonoma, with engineered plans, bonds, and inspections governed by Chapter 14.20 of the Municipal Code.
View full Sonoma rules →Key Facts Comparison
| Fact | Santa Rosa | Sonoma |
|---|---|---|
| Code section | - | SMC Ch. 14.20 |
| Permit required | - | Yes — for excavation, grading, fill |
| Bond | - | May be required |
| Commencement deadline | - | 180 days |
| Completion deadline | - | 1 year |
Highlighted rows indicate differences between cities.
Santa Rosa FAQ
No FAQs available.
Sonoma FAQ
How much earthwork can I do without a grading permit?
Sonoma Municipal Code Ch. 14.20 requires a grading permit for excavation, grading, and fill subject to volume and depth thresholds defined in SMC 14.20.020. Even smaller projects may need a permit if they affect drainage, slope stability, or sensitive areas — contact Sonoma Planning before starting.
Can I direct runoff onto my neighbor's lot?
No. SMC 14.20.100 grading requirements and California civil law prohibit concentrating or diverting surface drainage onto adjacent property. Drainage plans must demonstrate that runoff is dispersed or directed to an approved storm drain.
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