Grading & Drainage: Bonsall vs San Diego
How do grading & drainage rules compare between Bonsall, CA and San Diego, CA?
Bonsall and San Diego have similar restriction levels.
Bonsall, CA
San Diego County
San Diego County's Grading Ordinance (Division 7) requires permits for significant grading and mandates proper drainage design. Grading permits needed for 200+ cubic yards or 8+ foot cuts/fills. Drainage must be directed away from structures and neighboring properties.
View full Bonsall rules →San Diego, CA
San Diego County
San Diego Municipal Code Chapter 14, Article 2, Division 1 governs grading permits. Any cut or fill more than 200 cubic yards, slopes steeper than 5 feet, or work in environmentally sensitive lands triggers a permit. Manufactured slopes must be revegetated and hydroseeded per the Landscape Standards (Sections 4.3 and 4.4), and a Stormwater Pollution Prevention Plan with BMPs is required for any disturbed area.
View full San Diego rules →Key Facts Comparison
| Fact | Bonsall | San Diego |
|---|---|---|
| Permit Threshold | 200+ cubic yards or 8+ ft cuts/fills | - |
| Drainage | Away from structures and neighbors | - |
| Plans Required | Licensed engineer for permit projects | - |
| Slopes | Specific angle and compaction standards | - |
| Ordinance | Division 7 — Grading, Clearing, Watercourses | - |
| Code Reference | - | SDMC Ch. 14, Art. 2, Div. 1 (Grading) & Div. 6 (Stormwater) |
| Permit Trigger | - | >200 cubic yards, >5 ft slopes, or ESL overlay |
| Revegetation | - | Required on all manufactured slopes (SDMC §86.710) |
| Hydroseed Plans | - | Required for cut/fill slopes >3 ft (Landscape Stds §§4.3, 4.4) |
| Rainy Season BMPs | - | October 1 – April 30 enforcement |
| Issuing Office | - | Development Services Department, 1222 First Ave |
Highlighted rows indicate differences between cities.
Bonsall FAQ
Do I need a grading permit in San Diego County?
Yes, if your project involves moving more than 200 cubic yards of material or if cuts or fills exceed 8 feet in vertical height. Smaller projects may still need permits depending on slope and location.
Can I direct drainage onto my neighbor's property?
No. Drainage must be properly designed to not increase runoff onto neighboring properties. Altering natural drainage patterns that cause damage creates civil liability.
Who prepares grading plans?
Grading plans for projects requiring permits must be prepared by a licensed civil engineer registered in California. Plans must comply with the County's Grading Ordinance design standards.
San Diego FAQ
Do I need a grading permit in San Diego?
Yes if your earthwork exceeds about 200 cubic yards of cut or fill, creates slopes more than 5 feet high, alters drainage patterns, or occurs in Environmentally Sensitive Lands. Permits are issued by Development Services Department under SDMC Chapter 14.
Is hydroseeding required for slopes in San Diego?
Yes. Manufactured slopes greater than 3 feet in height must have a landscape and irrigation plan with hydroseed mix, application rates, and irrigation per the City's Landscape Standards Sections 4.3 and 4.4. Non-native invasive species are prohibited.
What is a Stormwater Pollution Prevention Plan in San Diego?
A SWPPP shows the erosion and sediment-control BMPs (silt fences, fiber rolls, inlet protection, stabilized entrances) you'll install and maintain during grading. SWPPPs are required for any disturbance during the rainy season (Oct 1 – Apr 30) per the City's Stormwater Standards Manual.
What are the penalties for grading without a permit in San Diego?
Stop-work orders, after-the-fact permit fees, and Administrative Citations under SDMC §14.0103 with fines up to $2,500 per violation per day. Stormwater violations can be referred to the State Water Resources Control Board for federal Clean Water Act enforcement.
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