| Business | Phone |
| Kinsley Construction 7080 Samuel Morse Dr, Columbia 21046 | (410) 312-3150 |
| Kinsley Construction Inc 7085 Samuel Morse Dr, Columbia 21046 | (443) 285-0488 |
| Konover Construction Corp 9051 Red Branch Rd # I, Columbia 21045 | (410) 715-3302 |
| Turner Construction Co & Jhu 10400 Little Patuxent Pkwy, Columbia 21044 | (410) 715-7240 |