The person who lives in the home. They buy a share of a property, occupy it as their principal residence, and run it exactly as a full owner would — making every decision and meeting every cost. They are a co-owner, not a tenant.
The Resident Owner is typically someone who can comfortably afford the weekly cost of a home but can't — or doesn't want to — take on a full bank mortgage: a single-income earner, a self-employed buyer, an older New Zealander, or anyone with a deposit but without the serviceability a bank requires.
They buy an initial share of the property (often around 20%) for cash, and a Passive Owner holds the rest. From day one the Resident Owner occupies the whole home and has the security, freedom and equity-building of ownership — without a bank, and at a weekly cost typically below both renting and a full mortgage.