Grading & Drainage: Duluth vs Snellville
How do grading & drainage rules compare between Duluth, GA and Snellville, GA?
Duluth and Snellville have similar restriction levels.
Duluth, GA
Gwinnett County
Grading permits required for significant earthwork. Drainage must not be redirected onto adjacent properties. Duluth enforces Gwinnett County Stormwater Management standards.
View full Duluth rules →Snellville, GA
Gwinnett County
Grading permits required for land disturbance per Chapter 36. Must not divert stormwater onto adjacent properties. Follows GA Stormwater Management Manual (Blue Book).
View full Snellville rules →Key Facts Comparison
| Fact | Duluth | Snellville |
|---|---|---|
| Permit | Tied to building/land disturbance permit | Required before earthwork |
| Retaining Wall | Engineered if over 4 ft | - |
| Slope | 6 in/10 ft from structures | - |
| Discharge | Cannot redirect onto neighbors | - |
| Manual | - | GSMM Blue Book |
| Runoff | - | No net increase |
| Diversion | - | Onto neighbors prohibited |
Highlighted rows indicate differences between cities.
Duluth FAQ
Can my neighbor regrade their yard so water flows onto mine?
No. Altering drainage to damage adjacent property creates civil liability and can trigger city enforcement. Document with photos and contact Planning & Development.
Do I need engineered plans for a retaining wall in Duluth?
Yes if the wall is over 4 feet tall or carries a surcharge (driveway, pool, or structure above). Engineering is required at any height with surcharge.
How far should finished grade slope away from my Duluth home?
Six inches of fall in the first 10 feet from the foundation. This is required to prevent water intrusion and erosion.
Snellville FAQ
Can my neighbor regrade and flood my yard?
No. Georgia follows modified common enemy rule - you cannot collect and discharge water onto a neighbor. File complaint with Planning & Development or pursue civil nuisance claim.
Do I need a grading permit for my Snellville backyard project?
Yes for any significant land disturbance. Snellville Land Development Code requires site plan review before earthwork that changes drainage patterns.
What standards does Snellville use for stormwater on new construction?
The Georgia Stormwater Management Manual (Blue Book). Post-development runoff cannot exceed pre-development rates for 1-, 25-, and 100-year storms.
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