| Business | Phone |
| Ac-Dc Ltd 5175 Peters Creek Rd Nw, Roanoke 24019 | (540) 362-2232 |
| Professional Builder 2203 Peters Creek Rd Nw, Roanoke 24017 | (540) 562-2345 |
| Clark Nexsen Consulting Engrs 10 Church Ave Se, Roanoke 24011 | (540) 982-0800 |
| Comprehensive Construction Svc 1326 Grandin Rd Sw, Roanoke 24015 | (540) 344-3003 |
| Desig Net 3845 Kentland Dr, Roanoke 24018 | (540) 772-4520 |
| Dickenson Management Svc 4229 Colonial Ave 2, Roanoke 24018 | (540) 989-5833 |
| Ecs Mid-Atlantic 5320 Peters Creek Rd F, Roanoke 24019 | (540) 362-2000 |
| Engineering Economics 1911 Memorial Ave Sw, Roanoke 24015 | (540) 344-5200 |
| Firepro Institute Ltd Roanoke 24013 | (540) 985-0400 |
| Hamilton Technical Svc 2480 Montgomery Ave Sw, Roanoke 24015 | (540) 776-0956 |
| Hayes Seay Mattern & Mattern 1315 Franklin Rd Sw, Roanoke 24016 | (540) 857-3100 |
| Faulkner & Flynn 10 S Jefferson St 170, Roanoke 24011 | (540) 985-9540 |
| Infocus Engineering 5720 Williamson Rd, Roanoke 24012 | (540) 767-4600 |
| Instrumentation Specialist Inc 2114 Avenel Ave Sw, Roanoke 24015 | (540) 343-1282 |
| Mann & Assoc 306 Market St Se, Roanoke 24011 | (540) 344-5513 |
| Mattern & Craig 701 1st St Sw, Roanoke 24016 | (540) 345-9342 |
| Robert R Norfleet Pe 930 Old Court Ln Sw, Roanoke 24015 | (540) 345-4043 |
| Nxl Construction Svc 3025 Peters Creek Rd Nw B, Roanoke 24019 | (540) 562-3400 |
| Spectrum Engineering 325 Mountain Ave Sw, Roanoke 24016 | (540) 345-8020 |
| Stearns & Wheeler 310 1st St Sw, Roanoke 24011 | (540) 982-1910 |