Lot Coverage Limits: Atlanta vs Roswell
How do lot coverage limits rules compare between Atlanta, GA and Roswell, GA?
Roswell has fewer restrictions than Atlanta.
Atlanta, GA
Fulton County
Atlanta's zoning code limits lot coverage — the percentage of a lot that can be covered by structures and impervious surfaces — based on zoning district. Residential lot coverage limits typically range from 45% to 75% depending on the district. These limits work with the tree canopy and stormwater regulations to maintain Atlanta's urban forest character.
View full Atlanta rules →Roswell, GA
Fulton County
Lot coverage limits in Roswell vary by zoning district under UDC Article 3. Typical R-1/R-2 single-family districts cap impervious surface at 35-40%; tighter caps apply in environmentally sensitive areas like the Chattahoochee River Corridor Protection Zone.
View full Roswell rules →Key Facts Comparison
| Fact | Atlanta | Roswell |
|---|---|---|
| Governing Code | Part 16 Zoning — by district | - |
| R-1/R-2 Coverage | 45–55% maximum | - |
| R-3 to R-5 Coverage | Up to 75% | - |
| Includes | All structures, driveways, patios, walkways | - |
| Also Limited By | Floor Area Ratio (FAR) | - |
| Code | - | Roswell UDC Article 3 |
| R-1 Cap (typical) | - | 30-35% impervious |
| R-3/R-4 (typical) | - | 40-50% |
| MRPA Zone | - | Tighter within 2,000 ft of Chattahoochee |
| Pervious Pavers | - | Can reduce calculated coverage |
Highlighted rows indicate differences between cities.
Atlanta FAQ
How much of my lot can I cover in Atlanta?
It depends on your zoning district. Single-family R-1 and R-2 districts allow 45-55% lot coverage. Multi-family districts allow up to 75%. Coverage includes all structures, driveways, patios, and impervious surfaces.
Do decks count toward lot coverage?
It depends on the deck type. Open decks that allow water to pass through may be partially excluded from coverage calculations. Solid patios and covered structures count fully toward lot coverage. Check with the Office of Buildings for your specific situation.
Roswell FAQ
How much of my Roswell lot can I cover with buildings and driveway?
30-50% depending on zoning district. R-1 estate lots are tighter (30-35%) and small-lot districts allow more (40-50%). Properties near the Chattahoochee are tighter still under MRPA rules.
Do pervious pavers count against lot coverage?
Properly installed pervious pavers can reduce calculated impervious surface, sometimes by 50% or more depending on the engineering documentation submitted.
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