Building Trade / Plumbing Jobs

Moving from Cape Town to Auckland New Zealand. Is there any advice you can give me with plumbing jobs in the Building Industry and who are the best contacts.
Looking forward to hearing from you guys - leaving in August

Firstly, do you have visa ?? 

There is very little work in the building industry at present and what work there is would be given to locals in preference to an overseas worker.

If you have a visa you may find something in Christchurch. Problem there is accommodation.