Well, house prices might not have moved much this year due to the abundant supply for sale - but it doesn't mean there hasn't been demand as well.
A crunch of the Reserve Bank (RBNZ) loans by purpose figures for the first nine months of this year show that the banks' mortgage pile is set to grow by easily its biggest amount this year since the pandemic splurge of 2021 when the amount of outstanding mortgage money surged by an astonishing $30 billion, a growth rate of $2.5 billion a month, or well over half a billion dollars a week.
After this massive pile-on came a perhaps inevitable pull-back, with the mortgage pile growing by only about $38 billion over the course of the next THREE years, including a 2023 low in there of about $10 billion.
For the first nine months of this year the bank mortgage pile has grown by $15.203 billion (to a grand total of $379.302 billion by the end of September 2025).
As some means of comparison, in the first nine months of 2021 the mortgage pile grew by $23.3 billion, while in the first nine months of 2024 it grew by just $9.3 billion and for the first three-quarters of 2023 by only $7.8 billion - so, the growth rate so far this year is close to double what we saw two years ago.
The participation, or non-participation, of investors has been a big part of the story.
In the second half of 2020, with the RBNZ having removed the loan to value ratio (LVR) limits, investors grew their share of the mortgage pile by $5.28 billion.
With the subsequent reinstatement of the LVR limits and with air escaping from the housing market bubble during 2022, investors very much took a back seat. Some months their share of the mortgage pile actually fell.
In 2023 just $340 million was added to the investors' mortgage pile.
However, by last year things were on the move again and the pile increased by over $3 billion.
And for the first nine months of this year, investors' share of mortgage money has increased by $5.2 billion to $98.672 billion as of the end of September. It seems a reasonable bet that the $100 billion mark will be reached by the end of the year.
As the RBNZ noted in its highlights summary of the September month, total housing lending stock increased by $1.8 billion (0.5%) in September 2025, down on the $2 billion (0.5%) increase recorded in August.
The annual growth rate increased from 5.6% to 5.7%, marking its highest rate since August 2022. Owner occupier lending increased by $1.1b (0.4%), while residential investor lending increased by $699 million (0.7%).
While the overall growth rate of the mortgage pile stands a 5.7%, the investors are actually outstripping that with 7.1%.

*This article was first published in our email for paying subscribers early on Friday morning. See here for more details and how to subscribe.
9 Comments
Anyone hazard a guess as to the impact of the potential CGT on the residential investor curve? i.e. impact of the threat of CGT...regardless of whether it happens or not.
Close to zero, but not quite.
Residential investors are price takers.... the yields are so low they need capital gain or subdivision or some kind of value add to make decent returns. Its why low interest rates are not making much impact. It hardly moves the needle compared with prices gong up.
Thanks for your reply. So given prices net of inflation are going down for most of NZ why is the % of investors increasing?
Well the CGT has only being announced this moth, its has had no impact on the past LHS of the chart, IMHO on the RHS the impact of CGT may well lower the rate of increase next read, or it could have just reached a steady state anyway.
It would be interesting to see what the composition of the "investor" mortgages looked like (ie small new builds vs subdividable) % in each quartile. As clearly a small new build has zero ability to generate much more then average yileds, and you are the mercy of the environment to get any capital gain.
I suggest an investor mortgage is better then an OO as its interest is tax deductable.
If I owned a section i would want that owned as an investment, well would have before CGT maybe now I want to reconsider the implications of that.
Its why low interest rates are not making much impact
I thought it was because of 2 years of economic suppression via rising interest rates. We all learned by now also that there's a significant delay between rates changing and the effects being felt.
Our best clues are to look at these measures wherever else they've been implemented and observe the results.
Australia has a capital gains tax and lower home ownership rates than NZ.
Markets discount current situations and settings and normally trade on future expectations.... which is why its surprising that the big drops have not turned into reducing stock overhang, or competitive bidding.
IMHO this is because prices are too high and people cannot envision enough CG to enter, and now there is a possibility of losing 25% of that gain to tax
Thanks for your reply. Why is that please?
I hinted at it above; there's little to no evidence of capital gains curtailing property investment.
Remember too we initiated a bright line scheme, and that had little to no measurable impact either.
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