The Rental Warrant inspection has 29 criteria and 63 questions. The assessment covers insulation, heating, ventilation, structural stability, sanitation, and hazard identification. Every question must achieve a pass for the Rental Warrant of Fitness to be achieved (like a vehicle WOF).
A self-assessment app is available on the Wellington City Council website from 28 August 2017. Anyone can download this for free. This will give a good understanding of how close the house is to meeting the Rental Warrant of Fitness assessment standard.