Either you stump up to connect to the mains in the street or you wont get it.
This is much the same as building a house and not digging a trench to connect to the current phone system.
As I understand it, Chorus (and other companies that are doing the rollout) are installing in the streets and the demarcation point will be in the street.
What does need to be considered is that, it will cost you money for you to connect your house to fibre.
If you had your phone line run within a PVC pipe (dont know how long this has been the practice) its apparently theoretically possible to 'blow' the fibre wires down (provided there are no obstructions etc). Dont know what that would cost or whether a cottage industry will spring up to do this.
The other potential solution is to have a handover point (in your street or nearest cabinet) that connects the existing copper to fibre. This is of course not ideal, but would/should still improve your connection rather a lot. I understand that this is being considered and evaluated.