| Business | Phone |
| Quality Home Inspection 17653 Winston St, Detroit 48219 | (313) 533-3200 |
| Santemp 2529 Orleans St, Detroit 48207 | (313) 259-1580 |
| Presidential Builders 8300 E Jefferson Ave, Detroit 48214 | (313) 821-2000 |
| Sharpe Environmental Testing 8581 Meyers Rd, Detroit 48228 | (313) 491-2656 |
| Pti Quality Containment Sltn 6400 E Nevada St, Detroit 48234 | (313) 368-4925 |
| Ptiqcs 5820 E Nevada St, Detroit 48234 | (313) 893-9538 |