| Business | Phone |
| P E Jefferson Construction Inc 9304 Rum Ridge Rd, Delmar 21875 | (410) 896-3593 |
| Rosencrance Enterprises Inc Delmar 21875 | (410) 896-4245 |
| C E Mills General Contractors 8467 Rum Ridge Rd, Delmar 21875 | (410) 341-0017 |
| B V Donovan 31830 Essex Pl, Delmar 21875 | (410) 749-0411 |
| Elite Homes 28847 Adkins Rd, Delmar 21875 | (410) 251-8661 |
| Interstate Construction 8788 Patton Rd, Delmar 21875 | (410) 896-3908 |