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Double Glazing Prices New Zealand
Prices include GST. Double glazing installations must comply with NZ Building Code clause H1 (energy efficiency). Building consent may be required for window frame replacements. EECA Warmer Kiwi Homes grants may subsidise double glazing for eligible homeowners.
Double Glazing Prices by Service Type — New Zealand
Prices include GST. Double glazing installations must comply with NZ Building Code clause H1 (energy efficiency). Building consent may be required for window frame replacements. EECA Warmer Kiwi Homes grants may subsidise double glazing for eligible homeowners.
| Service | Unit | From | Average | Up to |
|---|---|---|---|---|
| 🪟Standard Window Retrofit Remove existing single-glazed glass and retrofit double-glazed IGU into existing frame — standard window up to 1.2m x 1.2m | /window | NZ$380 | NZ$551 | NZ$760 |
| 🪟Large Window Retrofit Retrofit double-glazed IGU into large window opening — includes removal of existing glass, new IGU, and sealing | /window | NZ$665 | NZ$969 | NZ$1,330 |
| 🚪Sliding Door Double Glazing Supply and install double-glazed sliding door unit — includes removal, new frame and IGU, tracks, hardware, and weathersealing | /door | NZ$1,140 | NZ$1,710 | NZ$2,375 |
| 🏠Bay Window Conversion Convert existing bay window to double glazing — includes custom IGUs, frame modifications, and full weathersealing | /window | NZ$1,425 | NZ$2,090 | NZ$2,850 |
| 🏡Whole House (2-bed) Double glaze all windows in a 2-bedroom home — includes removal, new IGUs, and sealing throughout | /house | NZ$5,700 | NZ$8,360 | NZ$11,400 |
| 🏡Whole House (3-bed) Double glaze all windows in a 3-bedroom home — includes removal, new IGUs, sealing, and frame modifications | /house | NZ$9,500 | NZ$13,775 | NZ$19,000 |
| 🏡Whole House (4+ bed) Double glaze all windows in a 4+ bedroom home — includes full survey, removal, new IGUs, frame work, and sealing | /house | NZ$14,250 | NZ$20,900 | NZ$28,500 |
| 🔲Secondary Glazing Install a secondary glazing panel on the interior side of an existing window — adds insulation without replacing original glass | /window | NZ$238 | NZ$342 | NZ$475 |
| 🔇Acoustic Glazing Upgrade Upgrade to acoustic-rated double glazing with laminated glass — superior noise reduction for homes near busy roads | /window | NZ$570 | NZ$836 | NZ$1,140 |
| ☀️Low-E Coating Upgrade Add low-emissivity coating to double-glazed units — reduces heat transfer and improves energy efficiency | /sqm | NZ$48 | NZ$90 | NZ$143 |
| 💨Argon Gas Fill Upgrade Upgrade to argon gas fill between panes — improves thermal insulation by approximately 15% | /window | NZ$29 | NZ$49 | NZ$76 |
| 🔧uPVC Frame Replacement Remove existing frame and replace with new uPVC frame fitted with double-glazed IGU — includes full removal, new frame, and weathersealing | /window | NZ$760 | NZ$1,188 | NZ$1,710 |
Double Glazing Prices by City
Click a city for detailed local pricing and tips
Auckland
Auckland Region · 1.7M
From NZ$261
Wellington
Wellington Region · 215K
From NZ$250
Lower Hutt
Wellington Region · 110K
Pricing available
Christchurch
Canterbury · 390K
From NZ$238
Hamilton
Waikato · 180K
From NZ$232
Tauranga
Waikato · 155K
From NZ$232
Dunedin
Otago · 135K
Pricing available
Queenstown
Otago · 50K
Pricing available
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Double glazing prices in New Zealand range from NZ$29 for an argon gas fill upgrade to NZ$28,500 for a whole house (4+ bedroom) double glazing project. Prices include GST. Double glazing installations must comply with NZ Building Code clause H1 (energy efficiency). Building consent may be required for window frame replacements. EECA Warmer Kiwi Homes grants may subsidise double glazing for eligible homeowners.
The most common double glazing / window retrofit options in New Zealand include standard window retrofits, large window retrofits, sliding door double glazing, bay window conversions, whole-house packages, secondary glazing, acoustic glazing upgrades, Low-E coating, argon gas fill, and uPVC frame replacements.
Retrofit existing frames rather than replacing them to save 40–60%. Do the whole house at once for volume discounts of 10–15%. Choose standard double glazing over acoustic unless noise is a specific problem. Check government energy efficiency rebates. Compare at least three quotes. Prices include GST. Double glazing installations must comply with NZ Building Code clause H1 (energy efficiency). Building consent may be required for window frame replacements. EECA Warmer Kiwi Homes grants may subsidise double glazing for eligible homeowners.
In most cases, like-for-like glass replacement does not require permits. However, frame replacements that alter the external appearance, or work on heritage-listed properties, may require approval. Requirements vary by municipality. Always check with your local authority before commencing work. Prices include GST. Double glazing installations must comply with NZ Building Code clause H1 (energy efficiency). Building consent may be required for window frame replacements. EECA Warmer Kiwi Homes grants may subsidise double glazing for eligible homeowners.
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