As of this month (December 2021) there are five tiers of owners corporations in Victoria. Their definitions, rights and responsibilities are explained here. But, for instance, a Tier 1 block must have a strata manager but it’s optional for the others.
Basically the tiers are:
| Tier | Definition |
| 1 | More than 100 occupiable lots (and not a services only OC) |
| 2 | 51 to 100 occupiable lots (and not a services only OC) |
| 3 | 10 to 50 occupiable lots (and not a services only OC) |
| 4 | 3 to 9 occupiable lots (and not a services only OC) |
| 5 | 2 lot subdivision or a services only OC |