4315 Gex Road The City of Diamondhead is Growing. This is an opportunity to have a prime location for your new or existing business or investment property. This is a prime time to own an existing profitable business, and add additional strip mall for rental spaces for other businesses. There are endless possibilities to this deal. DIAMONDHEAD IS ON THE GROW. Approximately 2.30 acres that is currently the location of Subway. Visit Diamondhead Ms.gov or City Hall to see all of the exciting upcoming plans, including roundabouts at the interstate on ramps and the four way at the main entrance.There is a lot going on in Diamondhead. Don't miss the opportunity to be a part of it.