Alex Custom Homes Luxury Custom New Home Builder Atlanta Alpharetta Buckhead Suwanee Roswell Fulton, Alex Custom Homes - New Homes & Remodeling in Atlanta, Georgia. Alex Custom Homes has developed a reputation for constructing luxury homes in environments that capture the breathtaking views of the European timeless designs, and unique appearance. Alex Custom Homes, LLC, is centrally located just outside Metro Atlanta in Cumming, Georgia.