Reroofing Cost Calculator NZ for 2026 by Superior Renovations ®
Quick answer: reroofing in Auckland costs roughly $106 per square metre for asphalt shingles and about $150 per square metre for long-run steel, supply and install. A typical home lands somewhere between $15,000 and $35,000 once you factor in roof size, pitch and removing the old roof. A steep or complex roof adds around 10%, and stripping the existing roof first adds roughly 25%.
Roof size is the main driver, so a per-square-metre figure only gets you halfway. Here’s how the full cost stacks up, plus a fast way to price your own roof.
How much does a new roof cost in NZ?
We price a reroof on roof area multiplied by the material rate, then adjust for pitch and whether the old roof needs removing. These are the indicative Auckland rates our calculator uses:
| Factor | Indicative rate |
|---|---|
| Asphalt shingles | from $106 per m² |
| Long-run steel | from $150 per m² |
| Steep or complex roof | around +10% |
| Removing the existing roof | around +25% |
These are indicative figures for planning, not a fixed quote. The final number depends on your roof’s exact area, its pitch and complexity, the condition of the framing underneath, and the material you choose. If you’re leaning towards steel, our Colorsteel roofing cost guide goes deeper.
Roof replacement cost by roof size in New Zealand
Because the rate is per square metre, the fastest way to sanity-check a quote is to work from your roof area. The figures below are worked straight off the two indicative rates above, on a normal pitch with the old roof left in place. They are arithmetic, not quotes, and they don’t include scaffolding on a two-storey home or any framing repairs found once the old roof is lifted.
| Roof area | Asphalt shingles | Long-run steel | Steel, old roof stripped (+25%) |
|---|---|---|---|
| 100m² (small home or unit) | about $10,600 | about $15,000 | about $18,750 |
| 150m² (typical 3-bedroom) | about $15,900 | about $22,500 | about $28,100 |
| 200m² (larger family home) | about $21,200 | about $30,000 | about $37,500 |
| 250m² (large or cut-up roof) | about $26,500 | about $37,500 | about $46,900 |
Two things move those numbers fast. A steep or multi-angle roof adds about 10% for the extra time, safety gear and offcuts. And a two-storey home needs scaffold, which is priced on the job rather than per square metre of roof. If your roof is bigger than you think, that’s normal: pitch and eaves overhangs mean roof area routinely runs 20% to 30% above floor area.
What does it cost to reroof a typical home?
Say you’ve got a standard single-storey Auckland home with roughly 150 square metres of roof, going with long-run steel on a normal pitch. That’s about $22,500 for the new roof. If the existing roof needs stripping first, add around 25% and you’re near $28,000. Choose asphalt shingles instead and the base drops to about $15,900.
A steep or cut-up roof with lots of angles pushes it higher again. Enter your roof size, material and pitch into the reroofing cost calculator and it works out your figure in seconds – handy before you start ringing around for quotes.
What a new roof price should include (and what sits outside it)
Roofing quotes are notoriously hard to compare because two companies can price very different scopes. Before you weigh one against another, check what each one has actually allowed for.
Normally inside the price:
- Removing and disposing of the old roof, where a strip is part of the job.
- New roofing underlay, flashings, ridge and barge capping.
- Fixings suited to your site, which matters near the coast.
- Access and safety for a single-storey roof, plus site clean-up.
Usually priced separately, or once the roof is off:
- Scaffolding on a two-storey or steep roof.
- Repairs to battens, purlins or framing that only show up on the strip.
- New spouting and downpipes, if the existing ones are past it.
- Skylights, solar brackets, or moving a flue or aerial.
- Asbestos testing and licensed removal on older roofing. WorkSafe notes that asbestos cement was often used in roof sheeting and ridge capping, and that the only way to confirm it is to test a sample, so budget for testing on any pre-1990 roof.
Long-run steel vs asphalt shingles vs tiles
The two most common reroofing choices in Auckland sit at different price points and suit different homes.
Long-run steel
Long-run steel (including Colorsteel) is the Auckland workhorse – durable, quick to install on straightforward roofs, and well suited to our wind and rain. It’s the higher of the two rates but a long-life option.
Asphalt shingles
Shingles come in lower per square metre and give a different look, often chosen for character homes or steeper roofs where they sit well. They’re a solid mid-range option worth pricing alongside steel.
Concrete and pressed-metal tiles
Plenty of 1970s and 1980s Auckland homes still carry concrete tiles or the pressed-metal, stone-chip tiles of that era. Both can be replaced like for like, and both change the maths if you switch material: going from a light metal roof to heavy concrete tiles adds load the existing framing may not have been designed for, which pulls the job into consent territory. That’s covered below, and it’s worth settling before you fall in love with a different profile.
Signs it’s time to replace the roof rather than repair it
A patch is the right answer more often than roofers admit. These are the ones where a full replacement usually wins:
- You’ve paid for the same leak twice. Repeat repairs in the same area usually mean the substrate or the flashing detail is the problem, not the hole you keep patching.
- Rust at the laps and fixings, not just surface staining. Corrosion working out from the fixing lines is a sheet-life issue.
- Widespread chip loss on pressed-metal tiles, where the bitumen is exposed and going chalky.
- Sagging lines or soft spots underfoot, which point at the framing rather than the cladding.
- Age past the Building Code durability point. Roof cladding is expected to last at least 15 years; well beyond that, a reroof is maintenance rather than an upgrade.
- You’re about to spend money on what’s underneath. New insulation, a new kitchen ceiling or a full interior repaint all argue for sorting the roof first.
Do you need a building consent to replace a roof?
Often not, but it hinges on whether the new roof is comparable to the old one. Schedule 1 of the Building Act exempts replacement of a component with a comparable component in the same position. MBIE’s guidance uses roofing as its worked example: replacing 20-year-old profiled metal roof cladding with comparable profiled metal roofing sits inside the exemption.
Where it tips the other way:
- Changing to a heavier material. MBIE’s counter-example is corrugated iron swapped for concrete tiles, where the added load is likely to affect the building’s structural behaviour. That needs consent.
- Structural work. Substantial replacement of components contributing to structural behaviour or fire safety is outside the exemption.
- A durability or weathertightness failure. The exemption doesn’t cover replacing something that failed to meet the Building Code, including external moisture requirements.
Consenting and Restricted Building Work calls belong with your council or a Licensed Building Practitioner, not a blog. Auckland Council is the consenting authority here, and we confirm the pathway with them as part of the project so you’re not guessing.
Should you reroof, or reroof and reclad together?
If your home is due for both, doing them together can save on scaffolding and disruption, since the same access serves both jobs. It’s common on older homes where the roof and cladding have aged at the same rate. If that’s you, it’s worth reading our Auckland home renovation guide to plan the sequence, and the BRANZ resources on roofing and weathertightness are a good technical reference.
On the cost side, our recladding cost guide sets out what the cladding half runs to, and you can see how we reclad and reroof in the same programme rather than paying for access twice.
What drives your reroofing cost
- Roof area – the biggest factor, and larger than your floor area.
- Material – long-run steel sits above asphalt shingles per square metre.
- Pitch and complexity – steep, multi-angle roofs take longer and cost more.
- Removing the old roof – stripping and disposing of the existing roof adds to the total.
- Access – scaffold on a two-storey home, or a tight site with no truck access.
- Underlying repairs – damaged battens, purlins or framing found during the strip.
A new roof protects everything under it, so it’s worth getting right. Start with the reroofing cost calculator for an instant estimate, see local context in our reroofing costs in Auckland guide, then request a free feasibility report for a measured quote from the Superior Renovations team.
➡ Book your free in-home consultation with Superior Renovations
➡ Price your reroof with the reroofing cost calculator
➡ Request a free feasibility report for your project
How much does it cost to reroof a house in NZ?
In Auckland, reroofing runs from about $106 per square metre for asphalt shingles and about $150 per square metre for long-run steel, supply and install. A typical home totals between $15,000 and $35,000 depending on roof size, pitch, and whether the old roof is removed first. A steep roof adds around 10% and removal adds around 25%.
How much does a new roof cost in Auckland?
A standard single-storey Auckland home with around 150 square metres of roof in long-run steel is roughly $22,500 on a normal pitch, or near $28,000 if the old roof needs removing first. Asphalt shingles on the same roof come in around $15,900. Our calculator gives you a figure based on your actual roof.
What does a new roof cost for a 150m2 house?
Worked off our indicative rates, a 150 square metre roof on a normal pitch is about $15,900 in asphalt shingles or about $22,500 in long-run steel, before removing the old roof. Add roughly 25% for a strip and disposal, which takes the steel option to about $28,100. Scaffolding on a two-storey home and any framing repairs found during the strip are priced separately.
Is long-run steel or asphalt shingle cheaper?
Asphalt shingles are lower per square metre than long-run steel. Steel costs more but is durable, quick to install on straightforward roofs, and well suited to Auckland conditions. Both are worth pricing so you can weigh cost against look and longevity.
Why does removing the old roof cost extra?
Stripping the existing roof means labour to remove it, disposal of the old material, and time to inspect and repair any damaged battens or framing underneath before the new roof goes on. In our calculator that adds around 25% to the base cost.
Does a steep roof cost more to replace?
Yes. Steep and complex roofs with multiple angles take longer, need more safety measures, and use more material for the same footprint. Our calculator adds around 10% for a steep or complex roof compared with a flat or normal pitch.
How long does a reroof take?
A straightforward single-storey reroof is often done in a few days to a week, weather permitting. A larger or steeper roof, or one needing framing repairs after the strip, takes longer. Your project manager gives you a realistic timeline before work starts.
Do I need consent to reroof my house?
Replacing roof cladding with a comparable product in the same position is exempt under Schedule 1 of the Building Act, and MBIE uses profiled metal replaced with profiled metal as its example. Consent is needed if you change to a heavier material such as concrete tiles, if the work affects structural behaviour, or if the existing roof failed the Building Code for durability or external moisture. Auckland Council confirms the pathway, and a Licensed Building Practitioner should make the call on any Restricted Building Work.
How do I know whether to repair or replace my roof?
Repeat leaks in the same spot, rust spreading from the laps and fixings, widespread chip loss on pressed-metal tiles, or sagging and soft spots underfoot all point at replacement rather than another patch. Roof cladding is expected to last at least 15 years under the Building Code, so well past that a reroof is simply maintenance catching up.
Is asbestos a risk when we strip the old roof?
It can be on older roofs. WorkSafe notes asbestos cement was often used in roof sheeting and ridge capping, and that the only way to confirm asbestos is to test a sample. On any pre-1990 roof, allow for testing before the strip, and licensed removal if it comes back positive. It is not a DIY job.
What is the most expensive part of replacing a roof?
Labour and access are usually the biggest cost, followed by stripping and disposing of the old roof, which adds around 25%. Steep or complex roofs, scaffolding, and any rotten timber found once the old roof is off push it up further. The roofing material itself is often a smaller share than people expect.
Does a new roof add value to your home in NZ?
A new roof rarely returns its full cost as a straight valuation bump, but it removes a major red flag for buyers and inspectors - a tired or leaking roof can stall a sale or knock off more than the reroof costs. On leaky-era or 1970s-80s homes, a sound roof is often what gets a deal across the line. It protects value and saleability rather than adding a premium.
What is the best time of year to replace a roof?
Roofs get replaced year-round in Auckland, but late spring through summer gives the driest run of weather and the least risk of an open roof catching rain mid-job. Winter is doable - crews stage the work and cover nightly - but wet spells can add days. Booking a few weeks ahead lets you pick a drier window.
Further Resources for your reroofing project
- Featured projects and Client stories to see specifications on some of the projects.
- Real client stories from Auckland
Need more information?
Take advantage of our FREE Complete Home Renovation Guide (48 pages), whether you’re already renovating or in the process of deciding to renovate, it’s not an easy process, this guide which includes a free 100+ point check list – will help you avoid costly mistakes.
Download Free Renovation Guide (PDF)
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