| Business | Phone |
| Site Community-Realty Group 12401 Middlebrook Rd # 13, Germantown 20874 | (301) 601-9300 |
| Cinnamon Woods 18400 Cinnamon Dr, Germantown 20874 | (301) 972-1850 |
| Robert Management Inc 12321 Middlebrook Rd # 110, Germantown 20874 | (301) 444-7566 |
| Comsource Management Inc 16 Executive Park Ct, Germantown 20874 | (301) 916-7100 |
| Gale Co 20250 Century Blvd, Germantown 20874 | (301) 515-6883 |
| Gale Co 20300 Century Blvd, Germantown 20874 | (301) 540-5754 |
| Middlebrook Square 11404 Scenery Pl, Germantown 20876 | (301) 972-1877 |
| M & J Wilkow Ltd 20030 Century Blvd # 104, Germantown 20874 | (301) 972-0800 |
| M & P Partners 20400 Century Blvd, Germantown 20874 | (301) 972-4609 |
| Hydrocarbons Inc 11606 Settlers Cir, Germantown 20876 | (301) 540-5296 |