| Business | Phone |
| Maryland Landmark Inc 5039 Forge Haven Dr, Perry Hall 21128 | (410) 882-2955 |
| Md Landmark New Homes 101 Forge Haven Dr, Perry Hall 21128 | (410) 529-3363 |
| Realistic Realty Inc 52 Bangert Ave, Perry Hall 21128 | (410) 529-0175 |
| Home Selling Assistance 5004 Honeygo Center Dr, Perry Hall 21128 | (410) 256-3939 |
| Trenton Properties Inc 9606 Haven Farm Rd, Perry Hall 21128 | (410) 248-9045 |