| Business | Phone |
| Chang's General Construction 9609 Doctor Perry Rd, Ijamsville 21754 | (301) 831-8805 |
| Chesky Construction 2941 Green Valley Rd, Ijamsville 21754 | (301) 831-6354 |
| Dertzbaugh Construction Inc 5399 Beulah Dr, Ijamsville 21754 | (301) 865-3658 |
| Olden Construction Co Ijamsville 21754 | (301) 662-0143 |
| R Lane Construction 4707 Mussetter Rd, Ijamsville 21754 | (301) 695-1590 |
| Talon Construction Inc 9607 Doctor Perry Rd, Ijamsville 21754 | (301) 607-4760 |
| W E Welch & Assoc 2502 Urbana Pike, Ijamsville 21754 | (301) 831-8942 |