Indicative cost estimator
Uses only the published 2026 per-m² ranges cited below 1. It's a rough planning range, not a quote, and excludes asbestos removal and unusual access.
Indicative range: — incl. GST
Not sure of your roof area? Published guides show a 3-bedroom home at roughly 120–170 m² of roof 1.
Per-m² rates by material (2026)
| Material | Installed, incl. GST |
|---|---|
| Long-run steel (corrugated) | $130–$180 |
| Long-run tray / standing seam | $170–$230 |
| Concrete tiles | $140–$220 |
| Clay tiles | $200–$300 |
| Pressed metal tiles | $160–$230 |
Source: 1. Other 2026 guides: BoP Colorsteel re-roof $130–$175/m² 2; Auckland Colorsteel $90–$180/m² incl. removal 3.
By house size
| Home | Roof area | Indicative cost |
|---|---|---|
| 2-bedroom | 80–120 m² | $12,000–$20,000 |
| 3-bedroom | 120–170 m² | $18,000–$30,000 |
| 4-bedroom | 170–230 m² | $25,000–$42,000 |
| Large / multi-level | 230–350+ m² | $35,000–$55,000+ |
Source: 1 (straightforward single-storey long-run re-roof assumptions).
Extras that may not be in a per-m² rate
- Old-roof removal: about $15–$50/m² where not included 4
- Scaffolding: about $2,000–$10,000 where needed 4
- Asbestos roofing removal: about $50–$150/m² 5
What moves the price most
Size, pitch, access and material spec, in roughly that order according to one 2026 regional guide 2. Size, pitch and access matter more than the brand of sheet 6.
Materials comparison
Pick two materials. Figures are from published 2026 NZ sources 1.
Next: tile vs long-run · financing · get your fixed quote
Frequently asked
Does the price include GST?
The main ranges we cite are stated as including GST 1. Always confirm on your quote.
Why do quotes vary so much?
Scope differences: removal, scaffold, underlay, framing repairs and flashings. Compare line by line.
Sources
- Solution Roofing — How much does a roof replacement cost in New Zealand? (2026 guide)
- Bradley Roofing — How much does a re-roof cost in Bay of Plenty, 2026?
- Superior Renovations — Reroofing costs Auckland (2026)
- Calk NZ — Roofing calculator (2026 indicative costs)
- PropertyHelp — How much does asbestos removal cost in NZ? (2026 price guide, Sept 2026)
- Superior Renovations — Roof replacement cost NZ (2026), updated 24 Oct 2026
Figures are published planning ranges, checked 26 October 2026. They are not quotes.