Today I found, on the Auckland City Council website, a list of all the community halls and rooms available for hire in Auckland. Some of them are your bog-standard hall/conference rooms but some of them are quite unusual. None of these have overnight accomodation, so they would be strictly for day/evening games.
It also says the non-profit groups might be eligible for discounts on the hourly rates.
It might be worth exploring by those writing the venue wiki. In the meantime, here’s the link for game organisers to explore: