Grading & Drainage: Livermore vs Sunol
How do grading & drainage rules compare between Livermore, CA and Sunol, CA?
Livermore and Sunol have similar restriction levels.
Livermore, CA
Alameda County
Livermore requires grading permits for 50+ cubic yards of earthwork or 6+ ft of cut/fill under LMC Ch. 15.32 and CBC Appendix J.
View full Livermore rules →Sunol, CA
Alameda County
Alameda County regulates grading under Title 15 and CBC Appendix J. Permits are required for cuts or fills over 50 cubic yards or 3 feet in depth; hillside overlays have stricter rules.
View full Sunol rules →Key Facts Comparison
| Fact | Livermore | Sunol |
|---|---|---|
| Threshold | 50+ cubic yards | - |
| Cut/Fill | 6+ ft triggers permit | - |
| Drainage | 2% away from building | - |
| Code | LMC 15.32, CBC App J | - |
| Department | Engineering Division | - |
| Code authority | - | Title 15 and CBC Appendix J |
| Permit trigger | - | 50 cubic yards or 3 feet |
| Hillside zones | - | Geotech report required |
| Wet season | - | Enhanced BMPs Oct-Apr |
| Neighbor drainage | - | Cannot redirect without consent |
Highlighted rows indicate differences between cities.
Livermore FAQ
Do I need a permit to level my backyard?
Not if under 50 cubic yards and no slopes exceed 6 ft in height; larger work requires a grading permit.
Can I direct runoff onto my neighbor's yard?
No — you must handle drainage on your own property or route it to public storm drains per engineered plans.
Sunol FAQ
Do I need a permit to level my backyard?
Only if it exceeds 50 cubic yards, 3 feet in depth, or affects drainage onto neighbors. Small cosmetic grading for landscaping typically does not need a permit.
Can I divert runoff onto my neighbor's property?
No. Redirecting surface water that causes damage to adjoining property creates civil liability. Drainage must be directed to approved facilities or retained on-site.
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