Kinwood Union City Share: Real Estate Kinwood Union City Visit Website 5740 Buffington Road Atlanta, GA 30349 (404) 836-0416 About Map About We are a new townhome & apartment development managed & owned by RPM Living (Residential Real Estate) located 5740 Buffington Rd. What's Nearby? Distance: 5 10 15 20 25 50 mi.