Home improvement costs in London
Prices in London run about 28% above the UK average. Labour rates, parking and permit costs, and restricted access on terraced and flat conversions push London well above the national average.
- REGION
- London
- COST INDEX
- 128 / 100 UK
- POPULATION
- 8,900,000
What each job costs in London
National averages adjusted for London labour and materials rates.
Bathrooms
£5,100 – £15,500
Bathrooms in London · 7–14 days
See the London breakdownKitchens
£7,700 – £38,500
Kitchens in London · 2–4 weeks
See the London breakdownBoilers
£2,600 – £7,000
Boilers in London · 1–3 days
See the London breakdownAir Conditioning
£1,900 – £10,000
Air Conditioning in London · 1–2 days per unit
See the London breakdownSolar Panels
£5,100 – £18,000
Solar Panels in London · 2–4 days
See the London breakdownRoofing
£1,900 – £25,500
Roofing in London · 3 days – 3 weeks
See the London breakdownExtensions
£38,500 – £153,500
Extensions in London · 12–24 weeks
See the London breakdownLoft Conversions
£32,000 – £102,500
Loft Conversions in London · 6–10 weeks
See the London breakdownDriveways
£2,600 – £15,500
Driveways in London · 3–10 days
See the London breakdownWindows
£3,800 – £19,000
Windows in London · 1–3 days
See the London breakdownElectrical
£380 – £10,000
Electrical in London · 1 day – 2 weeks
See the London breakdownPlumbing
£150 – £7,700
Plumbing in London · Same day – 1 week
See the London breakdownLandscaping
£1,900 – £32,000
Landscaping in London · 1–4 weeks
See the London breakdownFlooring
£770 – £10,000
Flooring in London · 2–5 days
See the London breakdownPainting & Decorating
£510 – £7,700
Painting & Decorating in London · 2 days – 2 weeks
See the London breakdownHousing stock in London
Everything from Georgian townhouses to post-war blocks. Party wall agreements, restricted parking, permit skips and borough-specific Article 4 directions all add cost and time.
Common postcodes covered: N, E, SE, SW, W, NW.
Planning and building control
Building regulations applications and planning permission in London are handled by your London borough council. Most internal refits fall under permitted development, but new electrical circuits, structural openings, boiler installations and anything affecting a party wall need notification or sign-off before the work is signed off as compliant.
Always check whether your property sits inside a conservation area or has an Article 4 direction — both remove permitted development rights that most homeowners assume they have.
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