Main contractors in Wales

192 main contractors across Wales.

• R R&Z Construction Ltd Cardiff · Main contractor · 1-9 employees

  Cardiff's trusted builder for residential and commercial construction. Over 20 years of experience delivering quality craftsmanship across South Wales

• R Rag Construction & Groundworks Ltd Llanfairpwllgwyngyll · Main contractor

  Building construction, house extensions, loft conversions, concreting, drainage systems, garden landscaping, internal refurbishment. All services incl

• R Rap Construction Services Ltd Carmarthen · Main contractor · 1-9 employees

  RAP Construction Services Ltd, based in St. Clears, offers flexible construction services across West Wales, working with architects and engineers to

• R Read Construction Holdings Ltd Brymbo · Main contractor · 50-249 employees

  Read Construction is a multi award-winning construction company with a client focused appetite for sustainable development.

• R Reid Building Ltd Cardiff · Extensions · 1-9 employees

  Reid Building Limited are a highly qualified building & construction company in Cardiff, with over 17 years experience. We offer an extensive range of

• R Rhodri Roberts Building Contractor Ltd Amlwch · Main contractor · 1-9 employees

  RHODRI ROBERTS BUILDING CONTRACTOR LTD is a construction company based in Amlwch, Ynys Mon, offering a range of building services.

• R Rhomco Consulting Ltd Cardiff · Main contractor · 10-49 employees

  Rhomco is a leading construction consultancy providing project management, building surveying, cost consultancy, and principal designer services acros

• R Rise Construction Cardiff Ltd Cardiff · Main contractor · 1-9 employees

  Rise Construction Cardiff Ltd are trusted local building contractors in Cardiff, committed to delivering high-quality building services. Formed in 202

• R Rynik Carpentry And Building Services Ltd Merthyr Tydfil · Carpentry & joinery

  Commercial & Residential Carpentry and building services since 2010. Trust our proven track record in carpentry and building services, providing both

• S S.D. Rees & Son Ltd Barry · Main contractor

  SD Rees & Son Ltd is a family-run construction company in South Wales, offering new builds, extensions, refurbishments, and plumbing & heating service

• S Short Bros Homes (Kidwelly) Ltd Llanelli · Main contractor

  Short Bros Homes (Kidwelly) Ltd is a main contractor company based in Llanelli, registered at Companies House in 2020.

• S Short Bros Homes (Pontlliw) Ltd Llanelli · Main contractor

  Short Bros Homes (Pontlliw) Ltd is a main contractor company based in Llanelli, registered at Companies House in 2020.

• S Solseal Caldicot · Waterproofing · 10-49 employees

  The UK's leading supplier of sealants, adhesives & mortars, with speedy next-day delivery. Shop online from trusted brands like Sika, Everbuild, & Map

• S St Access Ltd Pwllheli · Scaffolding

  ST Access Ltd are professional rope access and working at height specialists. IRATA certified teams delivering safe, efficient access solutions for in

• S Sterling UK Construction Ltd Cross Hands · Main contractor · 10-49 employees

  A professional digital platform for Sterling UK Construction Ltd, showcasing residential and commercial projects, social value initiatives, and corpor

• S STRATEGIC BUILDING SOLUTIONS LTD Bridgend · Main contractor

  Strategic Building Solutions Ltd in Bridgend offers high-quality construction services including commercial strip-outs, refurbishments, new builds, an

• S Summit Rope Access Ltd Monmouthshire · Scaffolding

  Summit Rope Access Ltd offers specialist rope access services for cleaning, maintenance, inspection, and repair of buildings and structures at height.

• S Surveying Cymru (UK) Ltd Monmouth · Damp proofing

  Surveying Cymru offer building surveying services such as damp, mould and moisture surveys, working for Private Landlords, home owners and social hous

• S Sutro Group Ltd Cardiff · Civil engineering · 1-9 employees

  UK specialists in rope access, drone inspection and NDT services. Delivering safe, efficient asset integrity solutions for utilities, energy and indus

• T T A Roden Ltd Crawford Street Newport · Main contractor · 10-49 employees

  T A Roden Ltd is a Newport-based construction and engineering firm specializing in build and consultancy services. They are dedicated to bringing cons

• T Technique Design And Build Ltd Cardiff · Main contractor · 1-9 employees

  Technique Design And Build Ltd is a main contractor company based in Cardiff, registered at Companies House in 2018.

• T Tg Williams Builders Ltd St Asaph · Main contractor · 10-49 employees

  TG Williams Builders Ltd is a construction company based in St Asaph, Denbighshire.

• T Thomas Macrae Ltd Llandysul · Main contractor · 1-9 employees

  Thomas MacRae Ltd specialises in ICF construction, sustainable new builds, and energy-efficient projects across Carmarthenshire & West Wales.

• T Tjh Installations Ltd Swansea · Main contractor

  TJH Installations is a construction company based in Swansea, Wales. We offer a range of installation services to meet your needs.

• T Trafalgar Services Ltd Cardiff · Main contractor

  Trafalgar Services have over 40 years of experience in the construction industry and have established an excellent reputation in Cardiff.

• T Transformations Wales Ltd Port Talbot · Main contractor · 1-9 employees

  Natural Resources Wales is a Welsh Government Sponsored Body. Our purpose is to ensure that the natural resources of Wales are sustainably maintained,

• T Tree & Sons Ltd Milford Haven · Restoration & heritage · 10-49 employees

  Award-winning family run building & construction firm specialising in conservation work. Established 1978, with extensive experience in private sector

• T Truebuild South Wales Ltd Swansea · Main contractor · 1-9 employees

  Truebuild South Wales Ltd is a construction company based in Swansea, offering a range of building services across South Wales.

• T Trusthouse Construction Ltd Cardiff · Main contractor · 1-9 employees

  Trusthouse Construction is a construction and civil engineering company based in Cardiff, Wales & Baghdad, Iraq. We have a proven track record of deli

• T Tw Group (South Wales) Ltd Swansea · Main contractor · 10-49 employees

  TW Group (South Wales) Ltd is a dynamic construction company specializing in housing developments, renovations, and re-roofing for private and public

• T Twinners Plastering & Property Maintenance Ltd Ferndale · Main contractor

  Professional builders in Ferndale offering a wide range of services from full house renovations to small jobs. Fully qualified and highly skilled.

• T Tycroes Group Ltd Cross Hands · Main contractor

  Established in 1974, Tycroes Group is a construction and development company with a solid reputation in South Wales and across the UK. They offer a co

• U Ubv Builders Ltd Cardiff · Main contractor

  Ubv Builders Ltd is a main contractor company based in Cardiff, registered at Companies House in 2025.

• U Unlimited Access Ltd Cardiff · Scaffolding

  Unlimited Access LTD are a specialist access company based in Cardiff, South Wales. Rope access and confined space services inc. Rescue Teams and Trai

• V V3 Group (U.K) Ltd Cardiff · Main contractor

  Headed up by Tom Gent, well respected within the construction industry, V3 is fuelled by a team of highly skilled professionals with extensive experie

• V Vaughan Construction Ltd Llanelli · Main contractor · 10-49 employees

  A family-run business offering a personal touch with quality, safety, and professionalism. We build relationships through open communication, integrit

• V Vaughan Developments (South Wales) Ltd Carms · Property developer · 1-9 employees

  Vaughan Developments (South Wales) Ltd is a property developer company based in Carms, registered at Companies House in 2023.

• W W.B. Griffiths & Son Ltd Pembrokeshire · Main contractor

  W B Griffiths & Son Ltd are a family-run construction company with over 100 years of experience, offering a comprehensive range of building and civil

• W Wepco Ltd Cardiff · Main contractor

  WEPCo improves Welsh education infrastructure through sustainable partnerships, delivering community benefits and supporting economic growth.

• W Will Begg Carpentry & Building Services Ltd Swansea · Main contractor

  Trusted builders in Swansea with 30+ years combined experience. Specialising in house extensions, renovations, carpentry and plastering.

• W Willis Construction Ltd Penylan · Main contractor · 50-249 employees

  Willis Construction is a family-run business established in 1986, specialising in new build development, major refurbishment & maintenance, and insura

• Z Zenith Build Ltd Kidwelly · Property developer · 1-9 employees

  Zenith Build is a trusted UK real estate development company, specializing in high-quality residential and commercial projects. We ensure top-tier cra