| Business | Phone |
| Annapolis Masonry & Concrete 4534 Old Solomons Island Rd, Harwood 20776 | (410) 956-5566 |
| Nucci Brothers Stone Inc 105 Jordan Taylor Ln, Harwood 20776 | (410) 205-0001 |
| Ristaino Masonry Co 4401 Lansdale Rd, Harwood 20776 | (410) 867-4848 |
| South County Construction Co 4801 S Polling House Rd, Harwood 20776 | (301) 261-5552 |