If you're building a property portfolio in New Zealand, Loan-to-Value Ratio (LVR) restrictions are something you'll encounter at every step. Set by the Reserve Bank of New Zealand (RBNZ), these rules govern how much banks can lend relative to a property's value — and they affect investors in particular ways that are worth understanding clearly before you commit to your next purchase.

Below, we'll walk through the current rules, the key exemptions that may apply to you, and a worked example showing how LVR plays out for a client looking to add a third property to their portfolio.

LVR stands for Loan-to-Value Ratio — it's simply the amount you're borrowing expressed as a percentage of the property's value. If you're buying a $700,000 property and borrowing $490,000, your LVR is 70%.

The RBNZ doesn't restrict any individual borrower directly. Instead, they set "speed limits" — caps on how much of each bank's total new lending can be at high LVR. In practice, this means banks carefully manage who they can approve for low-deposit loans, and investors are held to a tighter standard than owner-occupiers.

Source: RBNZ, December 2025

Here's a detail that catches many investors off guard: when you already own investment properties with the same bank, LVR is typically assessed across your entire portfolio, not just on the new purchase. This is known as cross-collateralisation — all properties held as security are considered together.

This means equity in your existing properties can be used to support borrowing on a new one. But it also means that if your overall portfolio LVR is already sitting close to the limit, there may be less headroom than you'd expect when you go to buy again.

The RBNZ provides several exemptions that can open up lending options that wouldn't otherwise be available under the standard rules. It's worth knowing these before assuming a deal won't work.

Let's bring this to life with a real-world scenario. Meet our client — a property investor who already holds two rental properties with their bank, and is looking to add a third.

With $840,000 debt against a combined portfolio value of $1,270,000, this client's current LVR sits at 66.1% — comfortably below the 70% investor cap. That existing equity is the key to understanding how much can be borrowed for the new purchase.

At the standard 70% investor LVR, our client can access up to $504,000 in additional borrowing against their portfolio. Compared to the $650,000 purchase price for Property 3, this means they would need to contribute $146,000 in cash or liquid equity — for example, from a term deposit or equity in a non-bank-held property.

If the bank were to approve lending at 80% LVR — which sits above the standard investor cap and would need to fall within the bank's high-LVR speed limit allowance — the entire purchase could be funded from the portfolio's existing equity, with no cash required. That's the difference of $192,000 in additional borrowing power.

It's also worth noting that DTI (Debt-to-Income) restrictions now sit alongside LVR rules. Even if the LVR stacks up, the bank will also assess whether total debt across your household is within their DTI limits — typically a ratio of no more than 7× gross income for investors. Both tests need to be passed for an approval to proceed.