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Located at
16105 Columbus Ave., Suite #200, (entrance on Columbus Avenue) Derwood, MD 20855
(240) 627-9792  

Building entrance:  The entrance to the HOC Service Center is on Columbus Avenue.
Parking:  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