Grading & Drainage: Camarillo vs Simi Valley
How do grading & drainage rules compare between Camarillo, CA and Simi Valley, CA?
Camarillo and Simi Valley have similar restriction levels.
Camarillo, CA
Ventura County
Camarillo issues grading permits under CMC Title 16 (Building Code), which incorporates the California Building Code's grading and drainage provisions (CBC Appendix J). Any cut, fill, or change to surface drainage that exceeds adopted thresholds requires plans, a soils/geotechnical report on hillside sites, and inspection sign-offs.
View full Camarillo rules →Simi Valley, CA
Ventura County
Simi Valley requires grading permits for significant earth-moving activities and enforces drainage standards to prevent erosion, sedimentation, and impacts on neighboring properties. Hillside grading is subject to enhanced review.
View full Simi Valley rules →Key Facts Comparison
| Fact | Camarillo | Simi Valley |
|---|---|---|
| Code Section | CMC Ch. 16.04; CBC Appendix J | - |
| Permit Threshold | Cut >5 ft or fill >50 cu yd | - |
| Hillside Sites | Geotechnical report required | - |
| Drainage | May not be redirected onto neighbor | May not impact neighboring properties |
| Permit Trigger | - | Over 50 cubic yards cut/fill |
| Hillside Grading | - | Geotechnical report required |
| Erosion Control | - | Required October through April |
Highlighted rows indicate differences between cities.
Camarillo FAQ
When does Camarillo require a grading permit?
When you cut more than 5 feet, fill more than 50 cubic yards, or alter the established drainage pattern on the lot — per CBC Appendix J as adopted by CMC Chapter 16.04.
Simi Valley FAQ
Do I need a grading permit in Simi Valley?
Yes, for earth-moving exceeding 50 cubic yards. Projects on steep slopes or in hillside areas require geotechnical reports and enhanced review by the Building Division.
Can I change the drainage on my property?
Grading may not direct water onto neighboring properties. A drainage study may be required for projects that significantly alter surface water flow patterns.
When are erosion controls required?
Temporary erosion control measures must be in place during the rainy season (October through April) and throughout active construction regardless of season.
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