BY APPOINTMENT ONLY ON SATURDAYS. Established in 2005, residential and commercial concrete construction contractor ACCG, Inc. is based in Longwood, FL in Seminole County; and we proudly serve all of central Florida. We've also completed large projects throughout the entire state -- though we generally take projects within a 75 to 100-mile radius of our main office.100% satisfaction guaranteed. FREE, NO-OBLIGATION consultation & quote. Military & First Responders DISCOUNTS. Accredited, licensed, bonded & insured.