Trusted Builders
in Cardiff
- Local Cardiff builders, free to contact
- 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 local Cardiff specialists.
Emergency repairs, boiler replacements and full bathroom plumbing by local 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 local 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 local 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.
Domestic, commercial & chimney scaffolding hire in Cardiff — erected, inspected and dismantled by CISRS-carded crews.
Mini, builders & RoRo skips delivered across Cardiff — permits arranged and licensed waste carriers.
Home, office & long-distance removals in Cardiff — packing, storage and insured BAR-member movers.
Combi swaps, system boilers and full conversions in Cardiff by Gas Safe registered engineers.
Air-source, ground-source and hybrid heat pumps designed and installed by MCS-certified engineers in Cardiff.
Up-and-over, insulated roller and automated electric garage doors fitted across Cardiff.
uPVC, aluminium and heritage double glazing in Cardiff — FENSA registered installers.
Party walls, full rooms and floor/ceiling acoustic systems in Cardiff, built to Part E.
Split, multi-split and ducted air conditioning installed across Cardiff by F-Gas registered engineers.
Architects and architectural designers for extension plans, loft drawings and planning applications across Cardiff.
Extensions, renovations, structural work and complete building projects with trusted Cardiff builders.
NSI & SSAIB approved installers fitting bells-only, monitored and smart burglar alarms across Cardiff.
Why Choose BestBuilders in Cardiff?
Building work in Cardiff is handled by 45 vetted local trades on our books, all inside the South Wales pricing area. They have 180+ completed projects behind them and hold an average customer rating of 4.7 out of 5.
Builders based in and around Cardiff typically cover Bargoed, Rhondda and Llanelli too, so you are not limited to firms with a Cardiff address when comparing quotes across the South Wales area. Cardiff falls in the CF postcode area, covering roughly 155,800 households.
South Wales building costs run 10–15% below the national average, making it one of the most affordable regions in the UK for home improvements. Cardiff and Newport are well-served by vetted local contractors. That regional context is worth holding in mind when you compare the quotes that come back for your Cardiff job.
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.
New roof fitted to a 1930s semi in Cardiff. Old concrete tiles down, breathable membrane and treated battens up, finished with clay-effect interlocking tiles. Total £7560 over 8 working days. NFRC-registered, gave us a 10-year insurance-backed guarantee.
Pattern-imprinted concrete drive in Cardiff - 37m² covered. Old crumbling surface dug out, fresh sub-base laid, weed membrane and proper edging restraints. Total £3900 over four days. Crew worked through one wet day under temporary shelter to keep the schedule.
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.