Lease Agreement Nsw When Is A Rental Lease Agreement Binding If We Sign The Lease Before The Actually Date The Lease Starts?

When is a rental lease agreement binding if we sign the lease before the actually date the lease starts? - lease agreement nsw

My wife and I take a lease October 25, 2008, rent a house to LL, because they live outside the country. The lease does not begin until 1 NOV 2008, as in the contract. If the lease is binding on 25 October and 1 November?