Southern Insurance Underwriters, Inc. (SIU), based in Alpharetta, Georgia is a Certified Managing General Agency serving independent agents throughout the southeast for over fifty years. SIU understands the importance of competitive markets, innovative technology and personalized service. SIU provides access to over 120 markets, spanning: Commercial Property & Casualty, Commercial Transportation, Personal Property, Professional Lines and Standard Lines. With a staff of experienced and reliable underwriters, SIU can quickly turnaround almost any risk ranging from simple to highly complex hazards.