Trusted Builders
in Cardiff
- Fully vetted and reviewed Cardiff builders
- Extensions, loft conversions, kitchens, bathrooms, roofing, driveways & solar installation
- Free quotes — no commitment required
- Work guaranteed, fully insured tradespeople
What Our Cardiff Builders Do
All services →Single-storey, double-storey, rear and side extensions built to your design.
Velux, dormer, hip-to-gable and mansard loft conversions in Cardiff.
Full kitchen redesign, supply and fit by experienced Cardiff kitchen fitters.
Luxury and budget bathroom installations. Full project management available.
Block paving, resin, tarmac and concrete driveways with fast turnaround.
New roofs, repairs, flat roofing and emergency call-outs in Cardiff.
Solar panels, battery storage and solar thermal systems installed by vetted Cardiff specialists.
Emergency repairs, boiler replacements and full bathroom plumbing by CIPHE/APHC-verified plumbers in Cardiff.
Full rewires, consumer units and EV chargers installed by NICEIC/ECA-registered electricians in Cardiff.
Interior and exterior painting, wallpapering and full-house repaints by PDA and Dulux Select-accredited decorators.
Internal doors, fitted wardrobes and staircases by BWF and Institute of Carpenters-qualified joiners in Cardiff.
Fencing, patios and full garden design & build by BALI and APL-accredited landscapers across Cardiff.
Single, double, integral or detached garage conversions in Cardiff — full building regs sign-off included.
OZEV-approved EV charger installers in Cardiff — 7kW, 22kW, tethered, untethered and PV-linked options.
Why Choose BestBuilders in Cardiff?
Home renovation activity in Cardiff continues to grow year on year. The area's varied housing stock, from older stone-built properties to new-build estates, means there is always strong demand for skilled, experienced local builders.
Before any builder appears on our Cardiff platform, we carry out a full vetting check covering public liability insurance, trade qualifications, company registration and verified customer feedback. Only builders who pass every stage are listed.
Our Cardiff builder network covers extensions, loft conversions, kitchens, bathrooms, roofing, driveways and more. Get up to 3 free, no-obligation quotes within 24 hours and choose the builder that best fits your project and budget.
Start My Free Quote →Average Building Costs in Cardiff
| Internal door hanging | £ 400 – £1,325 |
| Full house rewire | £ 3,100 – £7,000 |
| Fencing (per 25m) | £ 625 – £2,200 |
| Whole-house interior repaint | £ 1,300 – £3,100 |
| Emergency repair | £ 110 – £310 |
| Solar Panel System | £ 4,500 – £8,500 |
| Fitted wardrobes | £ 1,600 – £5,300 |
| Consumer unit replacement | £ 400 – £800 |
| Patio installation (25m²) | £ 1,750 – £5,700 |
| House exterior paint | £ 1,600 – £3,950 |
| New bathroom plumbing | £ 1,050 – £3,100 |
| Solar + Battery Storage | £ 8,500 – £15,000 |
| Staircase installation | £ 1,600 – £4,850 |
| Home EV charger install | £ 700 – £1,575 |
| Full garden design & install | £ 2,600 – £10,600 |
| Wallpapering per room | £ 300 – £750 |
| Boiler replacement | £ 1,600 – £3,500 |
| Solar Thermal System | £ 3,500 – £6,500 |
Indicative prices for Cardiff area. See full cost guides →
Cardiff Homeowners Trust BestBuilders
Wet room conversion in Cardiff, South Wales. Stripped to brickwork, new soil pipe routing, walk-in shower with linear drain. Came in at £5490 over 8 working days. Fitter was WaterSafe and Gas Safe registered, certificates emailed same week. Cleanest job we have had in this house in years.
Used BestBuilders to find a bathroom fitter near Cardiff. Got two solid quotes back within a day, picked the mid-priced option for the itemised waterproofing detail. Builder dust-sheeted the hallway from day one, used the downstairs WC throughout. Final invoice came in 2% under quote.
A year post-completion and the underfloor heating is the standout - no cold tile shock first thing. Bathroom fitter near Cardiff was thorough on the post-job walkthrough. Estate agent valued the upgrade at +£15k of property value.
Cardiff Builder FAQs
Plan Your Project in Cardiff
Whether you're researching costs, checking planning rules, or comparing builders before you commit, our editorial team has produced these guides to help Cardiff homeowners make informed decisions.