| Business | Phone |
| Trenton City Controller 2800 3rd St, Trenton 48183 | (734) 675-7200 |
| Trenton Assessor 2800 3rd St, Trenton 48183 | (734) 675-6810 |
| Trenton Tax Collector 2800 3rd St, Trenton 48183 | (734) 675-6510 |
| Woodhaven Treasurer 21869 West Rd, Trenton 48183 | (734) 675-4925 |