Looking for the best villas in Hyderabad? hallmark infracon is one of the Best Builders in Hyderabad. Visit hallmarkinfracon.in for upcoming and ongoing projects in Hyderabad. Hallmarkinfracon is an exclusive community that offers exclusive premium and luxury villas in Hyderabad for the very upper crust. With Premium Class Amenities to embellish a lifetime.Hallmarkinfracon is an exclusive community that offers exclusive premium and luxury villas in Hyderabad for the very upper crust, Hallmark KSN Residency is one of the residential developments of Hallmark Constructions, located in Hyderabad. The project offers 3 BHK apartments.