Chatham County, GA Building Setbacks & Zoning: Lot Coverage Limits (2026)
Key Facts
- R-district building coverage
- 40 percent maximum
- R-1-A minimum lot area
- 12,000 square feet
- R-1-B minimum lot area
- 21,000 square feet
- R-1-C minimum lot area
- 32,000 square feet
- Code sections
- Sec. 4-6.1, 4-6.2
Summary
For uses in Chatham County's R-districts, Sec. 4-6.2 caps building coverage at 40 percent of the lot. Single-family lots are governed mainly by minimum lot area: 12,000 square feet in R-1-A, 21,000 in R-1-B, and 32,000 in R-1-C (Sec. 4-6.1).
Maximum Height (Feet): 36. Building Coverage (Percent): 40. [R-1, R-1-A, R-1-B, R-1-C and R-2 Districts]
Full Breakdown
The county controls bulk through both a building-coverage cap and minimum lot-area standards. Sec. 4-6.2 lists a maximum building coverage of 40 percent for uses in the R-A, R-1, R-1-A, R-1-B, R-1-C and R-2 districts. For dwellings, Sec. 4-6.1 sets minimum lot area per unit by district: 12,000 square feet and 70 feet of width in R-1-A, 21,000 square feet and 85 feet in R-1-B, 32,000 square feet and 100 feet in R-1-C, and 6,000 square feet and 60 feet in other one-family districts served by public water and sewer. Substandard existing single-family lots under 6,000 square feet may increase maximum coverage on a sliding scale under Sec. 5-4.4.
Violations & Fines
Exceeding the 40 percent building-coverage cap or platting below the minimum lot area can cause permit or plan-review denial and, if built, code-enforcement action requiring removal of excess structure or a variance.
Frequently Asked Questions
How much of my lot can the building cover?
What is the minimum lot size for a house?
Sources & Official References
Other rules in Chatham County
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