If you’re planning a new roof in Twickenham or Richmond upon Thames, the first question is almost always the same: what will it cost? The honest answer is “it depends” — but that isn’t much use when you’re trying to budget. So here are real UK figures, and what actually drives the price up or down.
The headline numbers
According to Checkatrade’s 2026 roof installation cost guide, the average new roof in the UK costs around £13,000. Typical projects range from roughly £6,500 to £18,500 for a standard three-bedroom semi. Per square metre, plain tile roofing runs £120–£230, while labour alone averages around £130/m². Flat roof installation is cheaper per square metre, at £50–£110, though it usually covers a smaller area such as a garage or extension roof.
These are UK-wide averages. Prices in South West London tend to sit toward the upper end of that range. That’s because of higher labour costs, scaffolding access on terraced streets, and the number of period and conservation-area properties across the borough that need extra care.
What actually changes the price
A few factors matter more than anything else:
- Roof size and pitch. A steep pitched roof takes longer to work on safely and needs more scaffolding than a simple flat roof.
- Material. Natural slate costs more than concrete or clay tile, but it can outlast both by decades — see our comparison of slate and tile roofing for period homes.
- Access. A terraced house on a narrow Twickenham street with no side access costs more to scaffold than a detached house with a driveway.
- What’s underneath. If the roof timbers, felt or insulation need replacing too, that adds to the job — this is usually only obvious once the old covering comes off.
- Conservation area rules. Many streets in Richmond, Twickenham and St Margarets sit inside a conservation area, which can restrict materials and, in some cases, require planning permission — see our guide to roofing in a conservation area.
Repair vs full re-roof
Not every roof problem needs a full replacement. If you’re dealing with a handful of slipped tiles or a small leak, a repair is usually far cheaper and can often be sorted in a day. Our guide on spotting the warning signs that a roof needs replacing explains how to tell the difference before you commit to either option.
Getting an accurate quote
Online calculators can only give a rough guide, because they can’t see your roof. The only way to get a truly accurate price is a site survey. Ideally, this comes with a written, itemised quote that breaks down materials, labour and scaffolding separately. That way you can compare quotes fairly, rather than just comparing one lump sum against another.
We quote new roofs across Richmond upon Thames and Teddington on the same basis as our home patch in Twickenham — a free survey first, then a clear, itemised price with nothing hidden in the small print.
Related reading
- Flat Roof Repair vs Replacement: Which Do You Need?
- EPDM Rubber vs GRP Fibreglass vs Felt: The Best Flat Roof Material for London Homes
- How to Tell If Your Roof Needs Replacing: 8 Warning Signs
- What to Do When Your Roof Is Leaking: An Emergency Checklist
- Slate vs Tile Roofing for Period Homes in Richmond upon Thames
- Fascias, Soffits & Guttering: A Homeowner’s Guide to Your Roofline
- Chimney Repairs, Re-Pointing and Removal Explained
- Velux & Roof Windows: Costs, Planning and Installation
We cover new roofs and re-roofing across Twickenham, and the wider Richmond upon Thames borough. Get in touch for a free, no-obligation survey and an itemised quote.