Troy is the cheaper of the two. Its lowest homestead rate is 30.6309 mills against Rochester Hills's 30.8553 — about $39 a year less on a $350,000 home at the uncapped taxable value.
| Municipality | Homestead mills | County rank | $250,000 | $350,000 | $500,000 |
|---|---|---|---|---|---|
| Troy | 30.6309–42.2594 | 15 of 52 | $3,829 | $5,360 | $7,658 |
| Rochester Hills | 30.8553–35.9928 | 16 of 52 | $3,857 | $5,400 | $7,714 |
Dollar columns are the annual homestead bill at the uncapped taxable value — roughly half the purchase price. Multi-district cities show their full rate range; the rank and dollar figures use each city's lowest district.
These two municipalities share 1 school district. A school district is not a taxing unit — the city millage stacks on top — so the same classrooms can cost a different amount per year depending on which side of the municipal line the house sits.
| Shared district | Rochester Hills | Troy | Gap on $350k |
|---|---|---|---|
| Avondale School District | 35.9928 | 34.5094 | $260/yr |
Troy is the cheaper of the two. Its lowest homestead rate is 30.6309 mills against Rochester Hills's 30.8553 — about $39 a year less on a $350,000 home at the uncapped taxable value.
About $39 a year on a $350,000 home — 30.8553 mills versus 30.6309 at each city's lowest homestead rate, using the official 2025 Michigan Treasury millage report.
Yes — Avondale School District. The rate still differs across the municipal line because city millage stacks on top of the school levy, so the same district can cost more in one city than the other.
Usually not, in either city. Michigan taxable value uncaps the year after a sale and resets to roughly half the purchase price, so the seller's capped bill on the listing is almost always lower than what you will pay.