To work out if a site can be subdivided – or if a second residential dwelling or unit can be built on a property you first need to establish the zoning of the site and what the rules for the specific zone provide for.
There are also other restrictions to subdividing or constructing additional buildings on a site – including any limitations noted within the ‘Interests” of the relevant Certificate of Title or if there are capacity issues in servicing the site – i.e. water supply, storm water and waste connections). To discuss any of these additional restrictions and limitations contact us.
In this post, I have used an example from the former North Shore Council District Plan. Figure 1 below is a snapshot of land within the former North Shore City Council area that has a mix of different zones.
Figure 1: Zoning maps

Extract of a Zoning Map from the former North Shore City Area