| Business | Phone |
| Altamont Contractor 681 State Route 146, Altamont 12009 | (518) 861-7238 |
| Brawny Construction Route 158, Altamont 12009 | (518) 861-6319 |
| Carver Inc 494 Western Tpke, Altamont 12009 | (518) 355-6034 |
| Emerson W Knapp & Sons 677 Knox Cave Rd, Altamont 12009 | (518) 872-1707 |
| Iarossi Contracting Altamont 12009 | (518) 861-5794 |
| Michael Murphy Construction Co 948 Altamont Voorheesville Rd, Altamont 12009 | (518) 861-5395 |
| Multi-Phase Contracting Corp 314 Old Stage Rd, Altamont 12009 | (518) 861-3634 |
| O'Connell Construction Corp 2202 W Old State Rd, Altamont 12009 | (518) 356-3612 |
| Schafer Construction Inc 4928 Western Tpke, Altamont 12009 | (518) 357-0221 |