It is located in Washington Beach, Vice City. As the name implies, the building is the headquarters of DBP Security, the employers of the Patrol Invest Group. It appears as an inaccessible security items shop, with a parking lot adjust to it.
Events of GTA Vice City
In the mission Bar Brawl, Tommy Vercetti goes to the headquarters to kill members of the Patrol Invest Group, in order to make the Front Page Cafe pay protection money to the Vercetti gang. Two DBP security members try to escape on PCJ-600s and an Oceanic, but they are eventually killed by Tommy.