South Wales

20+ Builders in Cardiff

Local builders covering Cardiff and surrounding areas. Also known as building contractors or construction firms. Real businesses, checked against public records. Free to browse.

39 verified builders · 4.7★ average across 200 Google reviews · 18 with website

Other trades in Cardiff:
Builders nearby:
20
verified builders listed
17
Companies House registered
4.7★
avg Google rating
200
customer reviews combined

Browse builders in Cardiff, South Wales. Every listing is sourced from public records and checked against Companies House and Google Business Profile. Ask for FMB or TrustMark credentials when choosing a builder, and verify them with the issuing body. All contact details are visible after a business claims its listing.

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20 businesses listed

Builder guides for Cardiff

Builder costs in Cardiff (2026 prices)
Real pricing data, job-type breakdowns and money-saving tips

Areas covered for builders in Cardiff

Builders listed for Cardiff typically cover the CF3, CF5, CF10, CF11, CF14, CF15, CF23, CF24 postcode areas and surrounding parts of South Wales. Service radius varies per business, many also work in adjacent towns and villages within the same postcode group.

CF3CF5CF10CF11CF14CF15CF23CF24

Including Rumney, St Mellons, Trowbridge, Llanrumney, Old St Mellons, Ely, Caerau, Fairwater, Canton, Llandaff, Pontcanna, Cardiff City Centre, Cardiff Bay, Butetown, Adamsdown, Riverside, Grangetown, Leckwith, Whitchurch, Tongwynlais, Rhiwbina, Birchgrove, Llanishen and Lisvane.

Builders in nearby towns

Builder in CaerphillyBuilder in BarryBuilder in BridgendBuilder in PontypriddBuilder in Tonypandy

Common builders services in Cardiff

Cardiff's planning department uses an online portal at planning.cardiff.gov.uk; most domestic work in the city's conservation areas (Pontcanna, Cathedral Road, Roath Park) needs Listed Building Consent or Article 4 Direction approval before starting. Building Regs sign-off goes through Cardiff Council.

Listed builders in Cardiff typically cover the following work. Scopes vary per business, request a free quote on any specific job above.

  • Conservatory and orangery installation
  • Damp and structural repairs
  • Renovations and refurbishments
  • Project management
  • Underpinning and foundation work
  • Garage conversions
  • Internal wall removal (load-bearing)
  • House extensions (single and two-storey)
  • New build construction
  • Loft conversions (dormer, hip-to-gable, Velux)

Not sure what FMB means or how to verify it? Read the plain-English definition →

Related guides

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Cardiff Electricians

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Before you hire, Welsh regulations to know

Pre-hire checklist, verifying any Welsh tradesperson

Read guide →

TrustMark, FMB & builder vetting in Wales

Read guide →

Welsh Building Regulations 2026, extensions, conversions, council fees

Read guide →

Builders near Cardiff

Builder in SwanseaBuilder in NewportBuilder in CaerphillyBuilder in BarryBuilder in BridgendBuilder in NeathBuilder in Port TalbotBuilder in Pontypridd

Other trades in Cardiff

PlumbersElectriciansRoofersPainters & DecoratorsHVAC & HeatingJoiners & CarpentersPlasterersGas EngineersLocksmithsLandscapers

Looking wider? Browse all builders across South Wales: covers Cardiff, Swansea, Newport, Barry and 15+ more towns.

Common questions about builders in Cardiff

How much do builders charge in Cardiff?+

Builder costs in Cardiff vary by job type and complexity. For an accurate quote, request a free estimate from a listed business above. Most builders offer free site visits before quoting.

What accreditations should a builder in Cardiff have?+

Reputable builders in Cardiff should hold relevant accreditations such as FMB · TrustMark · NHBC. We do not verify accreditation body membership, so always ask to see credentials and check them against the issuing body's own register before hiring.

How do I find a reliable builder in Cardiff?+

Browse the builders listed above, each has been added from public records and verified sources. Look for the Verified or Premium badge, check their accreditations, and read any reviews shown on their profile.

How quickly can I get a builder in Cardiff?+

Response times vary. For routine work, most builders in Cardiff can schedule within a few days. For urgent or emergency work, contact businesses directly, some offer same-day or 24/7 callouts.

Are builders in Cardiff regulated?+

Yes. Depending on the trade, builders in Wales must comply with UK building regulations and may require registration with bodies such as FMB · TrustMark · NHBC. Always confirm a tradesperson's credentials before work begins.

Do builders in Cardiff cover surrounding areas?+

Most builders listed for Cardiff also cover nearby towns in South Wales. Service radius varies, check each business profile for their declared coverage area, or use the "Builders nearby" chips at the top of this page to browse adjacent towns directly.

Is it free to use besttrades.wales to find a builder?+

Yes, completely free for homeowners. No booking fees, no sign-up required to browse listings or request quotes. Tradespeople pay nothing to claim their listing either. besttrades.wales is an independent Welsh trade directory, not a paid lead-resale service.

How is a builder on besttrades.wales verified?+

Every listing is cross-checked against public records: Google Business Profile for review history and location, and Companies House for active registration where applicable. We do not check accreditation body membership — ask the business for its registration number and verify it on the issuing body's own register.

All trades in Cardiff →·Builders regulations guide·Best builders in Cardiff

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