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10% Deposit Mortgage NZ — How to Buy a House with a 10% Deposit

Updated

A 10% deposit mortgage is possible in New Zealand — but your options depend on whether you’re buying an existing property or a new build, and whether you qualify for any government-backed schemes.


10% Deposit Options in New Zealand

Route Property type Rate premium? Additional restrictions
New build (standard LVR exemption) New build only No Property must be within 12 months of CCC
First Home Loan (via Kāinga Ora) Existing or new build No Income caps; price caps by region
Low equity loan (bank discretion) Existing Yes (0.25–0.75%) Limited availability; bank’s own cap
Guarantor mortgage Any No Eligible guarantor required

New Build: 10% Deposit Without Rate Premium

The RBNZ’s LVR rules exempt new build properties from the standard 80% maximum. Owner-occupiers can borrow up to 90% of a new build’s value — meaning a 10% deposit is sufficient with no rate loading.

Requirements:

  • The property must have received a Code of Compliance Certificate (CCC) within the last 12 months
  • Or you’re purchasing off-plan (buying during construction)
  • First sale by the developer (not resold by an owner)

This is the most common route to a 10% deposit mortgage for buyers who don’t qualify for the First Home Loan due to income.

See New Build LVR NZ for full eligibility detail.


First Home Loan: 5% Deposit (Better Than 10%)

If you’re a first home buyer and your income qualifies, the Kāinga Ora First Home Loan allows you to buy with just 5% deposit — less than 10%. Income caps: $95,000 single, $150,000 combined.

The First Home Loan can be used on both existing properties and new builds. If you qualify, this is a better option than a standard 10% deposit loan.

See First Home Loan NZ.


Low Equity Loan (Existing Property at 10% Deposit)

Banks have a limited allocation of high-LVR lending: since 1 December 2025, up to 25% of each bank’s new owner-occupier lending can go to borrowers with less than a 20% deposit (above 80% LVR). This includes loans at 85% LVR (15% deposit) and 90% LVR (10% deposit).

Implications of a low equity loan:

  • Rate premium: Typically 0.25–0.75% above the standard rate
  • Limited availability: Not always available — depends on whether the bank has capacity in its high-LVR allocation
  • Strict income requirements: Banks are more conservative about serviceability for high-LVR loans

On $600,000 at 90% LVR:

  • Loan: $540,000
  • At 5.45% (2-year fixed): $3,049/month
  • At 5.95% (with 0.5% rate premium): $3,229/month
  • Extra cost of rate premium: $180/month = $4,320 over 2-year fixed term

Guarantor Mortgage: 10% Deposit (or Less)

A guarantor mortgage uses a family member’s home equity as additional security — allowing you to purchase without a 20% deposit and without the rate premium of a low equity loan.

Requirements:

  • A parent or close family member with sufficient equity in their own home
  • They guarantee a portion of your loan (typically the gap between your deposit and 20%)
  • Their property secures that portion

See Guarantor Mortgage NZ for full detail on how guarantees work.


How Much You Need by Property Price

At 10% deposit:

Property price 10% deposit Mortgage Monthly repayment at 5.45% (30 years)
$550,000 $55,000 $495,000 $2,791
$650,000 $65,000 $585,000 $3,299
$750,000 $75,000 $675,000 $3,807
$850,000 $85,000 $765,000 $4,315
$950,000 $95,000 $855,000 $4,823

Plus buying costs ($8,000–$15,000 above deposit).


Saving $65,000 (10% on $650,000)

Monthly savings Time to save $65,000
$2,000 32 months (2 years 8 months)
$2,500 26 months (2 years 2 months)
$3,000 22 months (1 year 10 months)
$4,000 16 months (1 year 4 months)

With KiwiSaver (assume $20,000 available): Each row above is approximately 10 months shorter.


Lender Appetite for 10% Deposit Loans

All five major NZ banks (ANZ, ASB, BNZ, Westpac, Kiwibank) have some capacity for 10% deposit owner-occupier lending, but:

  • Availability varies — contact multiple banks or use a broker
  • A broker will know which banks currently have high-LVR capacity
  • New builds are often the most accessible route — all banks can lend at 90% on new builds without using their restricted LVR allocation

Further Reading