Grading & Drainage: Orange vs Santa Ana
How do grading & drainage rules compare between Orange, CA and Santa Ana, CA?
Orange and Santa Ana have similar restriction levels.
Orange, CA
Orange County
The City of Orange requires grading permits for earthwork and site drainage management under OMC Title 15 and the California Building Code. A Water Quality Management Plan must be submitted before grading permit issuance.
View full Orange rules →Santa Ana, CA
Orange County
Santa Ana requires grading permits for earthwork and land-disturbing activities under its building and zoning codes. Projects must maintain existing drainage patterns and prevent adverse impacts on neighboring properties. Grading plans must be submitted for review by the Public Works department for projects exceeding certain thresholds.
View full Santa Ana rules →Key Facts Comparison
| Fact | Orange | Santa Ana |
|---|---|---|
| Grading Permit | Required for most earthwork | - |
| WQMP | Required before permit | - |
| SWPPP | Required if 1+ acre disturbed | - |
| Contact | Public Works (714) 744-5525 | - |
| Permit Required | - | Grading permit from Public Works |
| Plan Review | - | Grading and drainage plans required |
| Standard | - | Must maintain pre-development drainage |
| Authority | - | Public Works Agency |
Highlighted rows indicate differences between cities.
Orange FAQ
Do I need a grading permit in Orange?
Yes for most earthwork projects. Contact the Public Works Department at (714) 744-5525 to determine if your project requires a grading permit.
What is required before I can get a grading permit?
You must submit a Water Quality Management Plan (WQMP) and grading plans showing drainage patterns and erosion control measures for Public Works approval.
Santa Ana FAQ
Do I need a grading permit in Santa Ana?
Yes, grading permits are required for earthwork and land-disturbing activities that exceed specified thresholds. Contact the Public Works Agency for specific requirements.
What drainage requirements apply to grading in Santa Ana?
Projects must maintain existing drainage patterns and prevent runoff from adversely affecting neighboring properties. A grading and drainage plan is required for review.
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