Invercargill has some of NZ's highest insulation demand — the cold climate makes it one of the best returns on investment available to homeowners. Warmer Kiwi Homes grants are particularly well-utilised in Southland given the cold conditions. Here's what insulation costs in Invercargill in 2026.
Invercargill Insulation Costs 2026
| Service | Invercargill typical cost |
|---|---|
| Ceiling insulation (full house, 3-bed) | $2,000–$5,000 |
| Underfloor insulation (full house, 3-bed) | $1,350–$3,500 |
| Ceiling insulation (per m²) | $17–$46/m² |
| Underfloor insulation — batts (per m²) | $11–$30/m² |
| Underfloor insulation — foil (per m²) | $7–$20/m² |
| Wall insulation — retrofit (per m²) | $42–$105/m² |
All prices GST inclusive. Below national average.
Invercargill Insulation Market
Invercargill has some of NZ's highest insulation demand — the cold climate makes it one of the best returns on investment available to homeowners. Warmer Kiwi Homes grants are particularly well-utilised in Southland given the cold conditions.
Warmer Kiwi Homes Grants
You may qualify for a government subsidy covering up to 80% of insulation costs (90% for Community Services Card holders) if: - You own and live in your home - Your home was built before 2008
Approved Invercargill installers can check your eligibility and manage the grant application. Check eligibility at energywise.govt.nz
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Related: Insulation Cost NZ | Heat Pump Installers Invercargill