Cobb Zoning Ord. §134 sets residential setbacks by district: R-80 (50/15/40 ft), R-30 (40/10/35 ft), R-20 (35/10/30 ft), R-15 (35/10/30 ft), R-12 (35/10/30 ft). Accessory structures typically 10 ft rear / 5 ft side.
Building setbacks in unincorporated Cobb County are governed by the Zoning Ordinance (Ch. 134) and vary by district. Key residential figures: R-80 (2-acre minimum): front 50 ft, side 15 ft, rear 40 ft. R-40: 50/15/40. R-30: 40/10/35. R-20: 35/10/30. R-15: 35/10/30. R-12: 35/10/30. R-30 corner lots require double-front-yard setback on the secondary street. Accessory structures (sheds, detached garages) generally require 10-ft rear and 5-ft side setback (see Ch. 134). Overlay districts (Mableton Form-Based Code, Powder Springs Road, Cumberland Community Improvement District, Town Center CID) impose additional standards and build-to lines. Variances go to the Cobb County Board of Zoning Appeals — application through Community Development, typical 6-week review. Front-porch encroachments up to 10 ft permitted in most R districts.
Building inside setback: stop-work order, plans correction, $250–$2,500 fine; demolition possible if not corrected. Variance application fee ~$400 plus notice costs.
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