Though a typical Commercial Lease may last three to five years, the length of your Commercial Lease will often depend on factors like your current business situation, the location of the commercial property, and the cost of rent.
For example, a new startup may want to enter a short-term lease to avoid getting locked into a lease term they might not be able to afford, but an established business may want to enter a long-term lease to reap benefits like signing incentives (e.g. first month's rent free) or landlord concessions (e.g. the landlord pays the realtor broker's fee).
It's also important to note that in most Australian states and territories the tenant of a retail lease has the right to a minimum tenancy period of up to five years. To confirm lease requirements in your jurisdiction, you can consult your local small business board.