Brookhaven, GA Building Setbacks & Zoning: Lot Coverage Limits (2026)

The RS districts are the detached-house districts of the City of Brookhaven, Georgia. Section 27-53(b) explains that the number after RS is shorthand for the minimum lot width required for detached houses. Table 2-3 in section 27-67 pairs each district with a minimum lot area: 15,000 square feet for RS-100, 12,000 for RS-85, 10,000 for RS-75, 8,000 for RS-60 and 6,000 for RS-50. It then prints the same Maximum Impervious Coverage figure of 35 percent under all five columns, so the percentage cap does not change from one RS district to the next.

Section 27-68 and Table 2-4 print 35 percent for detached houses in the R3 and RSA column and in the RM column. Civic buildings, which are allowed in every R district, have their own row in Table 2-10 of section 27-145, where Maximum Impervious Coverage is 45 percent.

The one incentive tied to impervious limits is in section 27-133(i). Residential properties with a detached ADU are eligible for an increased as-of-right impervious coverage bonus of five percent of the total lot area, and a DADU qualifies only if it has a bedroom, full kitchen facilities and a bathroom. Section 27-133(j)(1) requires an ADU on a nonconforming lot to meet all applicable setback and building regulations, and it lists coverage, height and floor area as examples.

Other sections tie back to the same limit. Section 27-1257 lets a nonconforming lot remove and replace structures and improvements only if the alteration does not increase overall impervious coverage. Section 27-704(c)(3) subjects ground-mounted solar energy systems to the applicable accessory structure height and impervious coverage regulations. The community development director is responsible for interpreting and enforcing the zoning ordinance under section 27-1220.