In reply to JohnBramwell:
Auckland- has one small quarry in the city and largely you will travel 3= hours every weekend to climb
Wellington- has some bouldering 1 hr= out of town. 4 hrs to climbing
Christchurch- has small crags in town but awesome climbing 1 hr out and is accesible to skiing etc too
Dunedin- has good climbing
I live in Queenstown but it's small 25,000 locals , and as many tourists again any given day. So it would depend on your Profession.
Taupo is another town that has climbing
Check out Mojozone.co.nz