If the government was to blame , one would expect that the error would have been sorted out after the first site had been finished. We all expect mistakes. But as I said above the mistakes should have been rectified for the remaining sites to be finished without excess costs.
We are buying on Crystal Bay Park, and were led to believe that there were to be 4 apartment blocks on the site, this was stated catergorically in their brochure they gave us, they also stated it was to be a gated site.

Since then an extra apartment block has gone up, and it is now no longer gated. Presumably, as they now have more potential clients, is the costing going down?

If this is the case, they have at least thought ahead.