I’ve been looking at NZ Freeview, to see if I will get reception.
It looks like you can get High Definition Freeview only over the air (via a Digital antenna)
The alternative is using a satellite dish, but that doesnt offer HD and also provides less channels. I found this page that offers maps – so you can check to see if you will get coverage
Looks like that address is either situated in a valley or is near something that might obstruct signal transmission, like trees or tall buildings.
You can use an elevated UHF aerial to pick up regional channels and enjoy better pictures and sound.
So… it might be tricky.