The Vulcan Compound or Vulcan Consulate was an area in Sausalito where Vulcans on Earth resided, such as those in the Vulcan Diplomatic Corps. Subcommander T'Pol lived there while apprenticed to Ambassador Soval. Commander Trip Tucker once sarcastically remarked "great parties at the Vulcan Compound." (ENT: "Broken Bow")
Other Earth cities with Vulcan compounds are Berlin and Canberra. (ENT: "Terra Prime")
While visiting Earth during the mid-22nd century, Doctor Phlox attempted to familiarize himself with many of the planet's religions. While there he was also allowed to to observe the Tal-Shanar at the Vulcan Consulate. (ENT: "Cold Front")