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Located at
8005 Gramercy Blvd., Suite #200, Derwood, MD 20855
(240) 627-9792  

Building entrance:  The entrance to the HOC Service Center is on Columbus Avenue.
Free parking is available in the garage on Columbus Avenue.
HOC customers may park in the reserved customer parking labeled "HOC"
Metro:  Our new location is within walking distance from the Shady Grove Metro Station
Bus Service:  Bus Service Trip Planner Here

Please note:  The Gaithersburg Customer Service Center (GCSC), located at 101 Lakeforest Blvd. Suite 200
Gaithersburg, MD 20877, is permanently closed and has moved to our new location:
8005 Gramercy Blvd., Suite #200, Derwood, MD 20855.

For your convenience you may also visit or call our other locations:

  • East Deer Park:  231 East Deer Park Drive, Gaithersburg, MD 20877 | (240) 627-9489
  • Silver Spring Service Center:  880 Bonifant Street, Silver Spring, MD 20910 | (240) 627-9793 
  • Kensington Office: 10400 Detrick Avenue, Kensington, MD 20895 | (240) 627-9400