What's the average price to replace a roof?
Get an indicative range from our free calculator below, then book a measured onsite quote.
This is a very common question we get from Christchurch and Selwyn homeowners. Online figures and directory tables only go so far. The free estimator below gives a rough indicative range, but it cannot account for every variable on your roof.
For planning, you can also read our roof replacement cost guide or the 2026 reroof cost article. When you are ready to commit, we provide a free measured onsite quoting service.
Variables the calculator cannot fully capture
The sliders cover the main drivers. These are the other questions we answer on site before fixing a price:
- Size and shape of your roof
- Roof pitch and angle
- How easy it is to access the property and how much room there is to work
- What kind of roofing material is currently on your roof
- Whether the roof framing is sound, with no soft or spongy spots that may indicate rotten timber
- What edge protection and scaffolding is needed
- What the new roofing material and profile will be
Free re-roof cost calculator
Adjust house size, pitch, current roof type, roof kind, and storeys for an indicative range. This is for full strip-and-replace planning in Christchurch, not repair or re-screw pricing. Scaffolding is quoted separately on site.
Ground-floor area, not roof area. For a two-storey home, use the ground floor only.
Low pitch (+10%)
What is on the roof now. Heavier profiles cost more to strip off and dispose of.
Indicative re-roof range
$13k – $23k
Based on an estimated 112 m² roof area for a full strip-and-replace in Christchurch. This is a planning bracket only, not a quote.
- Includes typical labour, steel, underlay, and flashings.
- Does not include scaffolding — that is measured and quoted separately on site.
- Excludes hidden timber repairs, major access problems, and consent-only extras.
- A measured site visit turns this into a fixed itemised quote.
How we provide an accurate roof replacement quote
To give you a fixed price for your roof, Winter & Son Roofing provides a free onsite quoting service. This is what that involves:
- Call us or use the contact form below to get booked into our system.
- A team member will be in touch to arrange an onsite visit.
- You receive a text the night before your appointment and another when we are about 30 minutes away.
- Someone does not need to be home for the visit. We use a drone from the ground to capture pictures and video of the roof.
- You receive your quote within two business days of the site visit.
Prefer to talk it through first? Contact us or call 027 826 4970.
Related cost guides
- Roof replacement cost Christchurch — brackets, cost drivers, and FAQs
- How much does it cost to reroof a house in Christchurch? (2026 guide)
- Roof replacement and re-roofing Christchurch — service overview and process
- Colorsteel colour chooser — preview roof colours in 3D with LRV and TSR
Common calculator questions
- What's the average price to replace a roof in Christchurch?
- Most full residential re-roofs land between $15,000 and $40,000+, depending on roof size, pitch, access, and detail. Use the calculator on this page for a more tailored indicative range, or read our roof replacement cost guide for the full breakdown.
- Is this calculator a roof replacement quote?
- No. It gives an indicative cost range for planning. A fixed quote needs a roof measure, access check, and discussion of profile and substrate risk on site.
- Why do you ask for house floor area instead of roof area?
- Most homeowners know their floor area. We estimate roof size from the ground-floor area, pitch, and roof kind. Extra storeys raise the price because of working height, not because the roof gets bigger. The result panel shows the estimated roof area we used.
- What makes a Christchurch re-roof cost more than the range shown?
- Steep pitch, poor access, multiple valleys, skylights, chimneys, coastal coating requirements, scaffolding, and rotten purlins found during strip-back all push the price up. This calculator does not include scaffolding.
- How do I get an accurate roof replacement price?
- Book a free onsite visit. We measure the roof, check access, fly a drone to capture condition, and return a fixed itemised quote within two business days.
Ready for a measured quote?
Send your address, roof age, and photos if you have them. We measure the roof properly, fly a drone where needed, and return a fixed scope and itemised price within two business days of the visit.
Active leak or storm damage?
Call us now, 24/7.
Water coming in needs a phone call, including nights, weekends, and public holidays. Call 027 826 4970.
Call 027 826 4970Planning a re-roof or new build?
Get a measured, no-surprises quote.
Get an itemised, no-surprises quote that explains steel grade, flashings, and scope.
Contact us
Need a roof replacement price?
The calculator is for planning. For a fixed quote, book a free onsite measure and drone inspection.
Active leak or storm damage?
Call us now, 24/7.
Water coming in needs a phone call, including nights, weekends, and public holidays. Call 027 826 4970.
Call 027 826 4970Planning a re-roof or new build?
Get a measured, no-surprises quote.
Get an itemised, no-surprises quote that explains steel grade, flashings, and scope.
Contact us