| Business | Phone |
| Morris & Ritchie Assoc Inc 1220c E Joppa Rd # 505, Towson 21286 | (410) 821-1690 |
| Alvi Associates Inc 110 West Rd, Towson 21204 | (410) 321-8877 |
| Bohler Engineering 810 Glen Eagles Ct, Towson 21286 | (410) 821-7900 |
| George W Stephens Jr & Assoc 1020 Cromwell Bridge Rd, Towson 21286 | (410) 825-8120 |
| Little & Assoc 1045 Taylor Ave, Towson 21286 | (410) 296-1636 |