| Business | Phone |
| National Tooling & Machining 9300 Livingston Rd # 1, Fort Washington 20744 | (301) 248-1250 |
| Pinewood Hill Condominium Assn 1335 Potomac Heights Dr, Fort Washington 20744 | (301) 248-5599 |
| Potomac Knolls Home Owners 1101 Aragona Blvd, Fort Washington 20744 | (301) 203-0546 |
| Silesia Co 619 Broad Creek Dr, Fort Washington 20744 | (301) 292-1970 |
| Cloverleaf Soa 6336 Rosecroft Dr, Fort Washington 20744 | (301) 567-9636 |
| Girl Scout Outbase 9550 Livingston Rd # D1, Fort Washington 20744 | (301) 449-5690 |