IRD has a formal procedure to set depreciation rates or create new categories for assets and industries. This is called "issuing a determination".1
Determination DEP80(2011) provides a new list of assets for the 'Residential Rental Property Chattels' industry category.2
In general, the Commissioner of Inland Revenue issues determinations about various tax issues such as accrual expenditure, depreciation (as in DEP80), financial arrangements, foreign currency, livestock valuations, standard costs for boarding service providers, and childcare providers.3
This DEP80 list contains asset classes like carpets, dishwashers, and furniture, that satisfy the three-point test, to be treated as separate depreciable properties and give their estimated useful life, diminishing value rates, and straight-line rates.
1. IR260 2023 - Depreciation - guide for business