Home improvement costs in Cardiff
Prices in Cardiff run about 8% below the UK average. Low day rates, though rural travel surcharges and solid-wall properties can offset the saving on larger jobs.
- REGION
- Wales
- COST INDEX
- 92 / 100 UK
- POPULATION
- 372,000
What each job costs in Cardiff
National averages adjusted for Wales labour and materials rates.
Bathrooms
£3,700 – £11,000
Bathrooms in Cardiff · 7–14 days
See the Cardiff breakdownKitchens
£5,500 – £27,500
Kitchens in Cardiff · 2–4 weeks
See the Cardiff breakdownBoilers
£1,800 – £5,100
Boilers in Cardiff · 1–3 days
See the Cardiff breakdownAir Conditioning
£1,400 – £7,400
Air Conditioning in Cardiff · 1–2 days per unit
See the Cardiff breakdownSolar Panels
£3,700 – £13,000
Solar Panels in Cardiff · 2–4 days
See the Cardiff breakdownRoofing
£1,400 – £18,500
Roofing in Cardiff · 3 days – 3 weeks
See the Cardiff breakdownExtensions
£27,500 – £110,500
Extensions in Cardiff · 12–24 weeks
See the Cardiff breakdownLoft Conversions
£23,000 – £73,500
Loft Conversions in Cardiff · 6–10 weeks
See the Cardiff breakdownDriveways
£1,800 – £11,000
Driveways in Cardiff · 3–10 days
See the Cardiff breakdownWindows
£2,800 – £14,000
Windows in Cardiff · 1–3 days
See the Cardiff breakdownElectrical
£280 – £7,400
Electrical in Cardiff · 1 day – 2 weeks
See the Cardiff breakdownPlumbing
£110 – £5,500
Plumbing in Cardiff · Same day – 1 week
See the Cardiff breakdownLandscaping
£1,400 – £23,000
Landscaping in Cardiff · 1–4 weeks
See the Cardiff breakdownFlooring
£550 – £7,400
Flooring in Cardiff · 2–5 days
See the Cardiff breakdownPainting & Decorating
£370 – £5,500
Painting & Decorating in Cardiff · 2 days – 2 weeks
See the Cardiff breakdownHousing stock in Cardiff
Large Victorian terrace belt in Cathays, Roath and Canton, much of it student-let. Welsh building regulations differ from England on some energy and ventilation requirements.
Common postcodes covered: CF10, CF11, CF14, CF24.
Planning and building control
Building regulations applications and planning permission in Cardiff are handled by Cardiff 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.
Get a Cardiff estimate in two minutes
Add photos and we'll break down labour, materials and timelines using Wales rates — then match you with up to 3 vetted local professionals.
Start your free quote