| Business | Phone |
| William E Walter Inc Mech 913 W Holmes Rd, Lansing 48910 | (517) 887-1494 |
| Doctor Electric 423 Pearl St, Lansing 48906 | (517) 371-8039 |
| Encompass Electric & Telecom Lansing 48912 | (517) 490-4998 |
| Goodrich Electrical Contr 640 W Berry Ave, Lansing 48910 | (517) 887-3395 |
| Mid Michigan Mechanical Contr 700 N Washington Ave, Lansing 48906 | (517) 485-7990 |
| A A Electric 1117 N High St, Lansing 48906 | (517) 272-3532 |
| R Z Trenching Lansing 48911 | (517) 331-0164 |