| Business | Phone |
| Day Break Estates Glen Arm 21057 | (410) 592-8980 |
| Emory Properties Glenarm Rd, Glen Arm 21057 | (410) 592-8046 |
| Glen Arm Homes Production 12238 Long Green Pike, Glen Arm 21057 | (410) 592-7997 |
| Tom-Lin Construction Co 5205 Glen Arm Rd E, Glen Arm 21057 | (410) 592-9819 |
| Twining Construction Co 5630 Sharon Dr, Glen Arm 21057 | (410) 592-8875 |