A planning permit is required to subdivide land. It is important to keep in mind that although a permit can be granted, it does not mean a permit will be necessarily granted in your case.
There is no defined method to determine whether subdivision of land is possible upfront. Whether a particular parcel of land can be subdivided is ultimately determined by the planning permit application process. In assessing the application, Council will determine whether the proposal will produce acceptable outcomes against the relevant clauses of the Frankston Planning Scheme, including Clause 56 -Subdivision for subdivision in residential areas.