Double glazing grants in New Zealand
If your home is cold and draughty, you don’t have to wait years to make it warmer. Many New Zealand banks and some councils offer low interest or interest free finance for genuine double glazing.
Most homeowners fund genuine double glazing with a low rate green home loan top up from their bank, or a council program repaid through rates. Both options let you spread the cost into manageable repayments while you start enjoying a warmer, drier home.
Start by checking if you qualify for any insulation or heating support, then talk to your bank about a green top up or see if your council offers a suitable scheme.
Why Finance Double Glazing?
Investing in genuine double glazing can help you:
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Reduce heating use and smooth winter bills
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Cut condensation and damp for healthier living
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Improve comfort year-round and reduce outside noise
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Potentially lift resale appeal with a warmer, drier home and modern joinery
To get an initial idea on how much a double glazing project will cost, try our RetroGLAZE Cost calculator. Just put in your house specifications and get an instant estimate.
Quick comparison of common grants and loans in NZ
Always check the providers current terms and eligibility
| Provider | Product | How it works | Typical limit | Typical term | Web page |
| ANZ | Good Energy Home Loan | Special fixed-rate home-loan top-up for approved upgrades such as double glazing | up to $80k | 3 years fixed | ANZ Good Energy Loan |
| ASB | Better Homes Top Up | Special fixed-rate top-up for home efficiency upgrades | up to $80k | 3 years fixed | ASB Better Homes Top Up loan |
| BNZ | Green Home Loan Top-Up | Special fixed-rate top-up for approved upgrades | up to $80k | 3 years fixed | BNZ Better Future Home Loan |
| Westpac | Greater Choices Home Loan | Interest-free top-up for approved upgrades | up to $50k | up to 5 years | Westpac Greater Choices Home Loan |
| Local council example | Sustainable Homes (Hawke’s Bay) | Voluntary Targeted Rate added to your property rates | varies | multi-year | Go to your local council page to see what they offer |
How to choose a funding path
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Check any support you qualify for
Government support focuses on insulation and fixed heaters. If eligible, use that first to reduce overall project cost. -
Estimate your window budget
Use our Double Glazing Cost Calculator to size retrofit vs replacement for your home. -
Talk to your bank
Ask about a green home-loan top-up for double glazing. Confirm current terms, limits, fees and how repayments work alongside your main loan. -
Consider council programs
Where available, a rates-based option lets you repay via a Voluntary Targeted Rate. Check your council’s website for current schemes.
Get in touch with one of our team:
FAQs
Can I get finance specifically for double glazing?
– Yes. Many banks offer green home loan top ups you can use for genuine double glazing. Check your bank’s current criteria.
Is there an interest free option?
– Some lenders offer interest free periods on approved upgrades. Review your bank’s current offer and limits.
Are there government contributions for windows?
– Government support prioritises insulation and fixed heaters. Use any eligibility there first, then a bank or council option for windows.
Do I need to be an existing home loan customer?
– Often yes. Most green top ups are tied to your home loan provider. Ask your bank for specifics.
