While an important tourist attraction during the latter years of the original Star League, Communications Enterprises Inc (the sole supplier of HPG hardware and equipment for the League's Department of Communications) spent considerable money to purchase the majority of the island as a site for an upgraded replacement for the SLCOMNET's Prime HPG at the University of Terra just outside Unity City. As well as the location for the planet's massive HPG transmitter and the computer coordination systems for the entire network, the planned complex was designed to be a model Star League community, providing housing projects, a massive park, a zoo, along with library facilities, museums and tourist attractions. The central HPG complex was an architectural masterpiece of marble and ferrosteel, ensuring it was both immensely beautiful and strong enough to withstand a direct nuclear attack. 
By the time of the Amaris Coup in 2766, construction on the Hilton Head Complex was only half-completed. The bulk of the construction crews desperately fled to their homes as the coup unfolded, but those who remained carefully and methodically mothballed the remaining construction materials and equipment, hiding them from the occupying Rim Worlds Republic troops before abandoning the site. Their efforts were so successful that five weeks after the death of Richard Cameron when the 203rd Republican Guards landed on Hilton Head Island, the Republican troops found nothing of perceived value and setup camp two kilometers from the central complex, never discovering the buried materials during the length of Stefan Amaris' reign on Terra. 
In December 2779 following Operation Liberation, the SLOCOMNET's lead technician Jerome Blake visited the half-finished site to see if it was a viable location to replace the now ruined Unity City HPG station, his initial survey discovering the carefully hidden construction materials much to Blake's joy with construction beginning again within a month. As the Great Lords returned to Terra for the final session of the Star League High Council in 2780, Blake was fully involved in the continuing construction on Hilton Head, overseeing the installation of the complex's primary Fusion Reactor when he was nominated for the post of Minister of Communications on October 10th. 
- ComStar", p. 9 "Hilton Head"
- ComStar", p. 9 "Hilton Head Complex - Collapse of the Star League"