MBIE Rental Bond Data NZ — The Best Free Rent Benchmark

The Facts

The Ministry of Business, Innovation and Employment (MBIE) publishes monthly rental bond data drawn from every residential tenancy bond lodged with Tenancy Services. The dataset includes geometric mean rents broken down by suburb (or territorial authority), bedroom count, and dwelling type (house, flat, apartment, room). Because bond lodgement is mandatory for most rentals, the dataset captures roughly 95% of the formal rental market. It is the most accurate free rent benchmark in NZ and the dataset underpinning the Cashflow Positive newsletter's rent analysis. Available as downloadable CSV or interactive online viewer.

A Developer's Take

Free monthly data from MBIE Tenancy Services. Geometric mean rents by suburb, by bedroom count, by dwelling type. The dataset captures roughly 95% of the formal rental market because bond lodgement is mandatory.

This is the most accurate free rent benchmark in NZ. Every feasibility study should be cross-checking your assumed rents against this dataset.

How to use it: pull the latest monthly data, filter to your suburb and dwelling type, look at the geometric mean rent for the bedroom configuration you're building. Geometric mean smooths out extreme outliers better than the simple average.

What the data doesn't show: short-term rentals (Airbnb), boarding house arrangements, informal sublets. So in tourist or high-Airbnb suburbs, the bond data understates actual market rent.

The other thing it doesn't show: rent levels for premium properties (top decile). If you're building anything above suburb-median quality, factor a premium over the geometric mean.

Five-minute exercise: bookmark the MBIE bond data page, set a calendar reminder for the 5th of each month, pull the latest data the day it drops. The rent assumptions you carry in feasibility models are the single biggest input on yield for investors. Wrong rent assumptions equals wrong feasibility. Right rent assumptions cost you nothing but ten minutes a month.

When to use this

Use MBIE bond data anywhere you would otherwise quote a TradeMe asking rent. It is the only free source backed by actual signed tenancies rather than aspirational listings. Pull the CSV for any feasibility that needs a defensible rent assumption — yield, DSCR, exit refinance — and use the suburb-level breakdown to match comparable dwelling types. The geometric mean smooths outliers, which is what you want for a baseline; pair it with a TradeMe scan for the current asking-price band.