We'll try to keep you out of trouble....
All work will still have to comply with the Building Code.
Every house over 10 square meters requires Building Consent.
Every house under 10 square meters with water requires Building Consent.
You still need Building Consent.
It has to be built according to the Consented Plans.
You must own the land ( a mortgage is OK).
A “Licensed Builder” is still required to oversee the pile holes and the panel assembly if you decide not to pursue an "Owner Builder Certificate".
Under the Owner Builder Exemption, there is a requirement to either live in, or intend to live in the house you build.
You still have to run a safe site, and make sure there are no accidents, complying with Health & Safety rules.