1. Bass Frederick 16201 Oak Meadow Dr, Derwood, MD 20855 Coordinate: 39.12201,-77.14193 Phone: (301) 208-7240
2. Trunnell Electric, Inc. 15754 Crabbs Branch Way, Derwood, MD 20855 Coordinate: 39.11297,-77.15858 Phone: (301) 258-8300