Construction companies in Wales

1711 construction companies across Wales.

• A AutoDor Swansea · Windows & doors

  AutoDor are leading garage door specialists in Swansea and Llanelli, offering a wide range of roller, up and over, and sectional garage doors, plus se

• A Automatic Door Suppliers Association Swansea · Insulation · 1-9 employees

  ADSA is the Automatic Door Suppliers Association, established in 1985 to set quality and safety standards for the powered pedestrian door industry. Th

• A Averys Decorators Ltd Caldicot · Painting & decorating

  Averys is a family-run painting & decorating firm based in Chepstow, serving South Wales & the South West with high standards and professional service

• A AVID CONSTRUCTION LTD Swansea · Design & build · 1-9 employees

  Premier construction services across South Wales. From concept to completion, we deliver excellence in every detail. Specialising in new builds, exten

• A Awen Futures Ltd Cardiff · Electrical

  Awen Futures focuses on ERP consulting, AI compute, and sustainability, aiming to integrate natural intelligence into business systems and build a sus

• A Axis Roofing Ltd Penarth · Roofing · 10-49 employees

  Axis Roofing is a professional and skilled roofing company with over 35 years of experience, specialising in flat and pitched roofing solutions, repai

• A Ayjay Group Ltd Caerphilly · Electrical

  Ayjay Group are leading electrical & refrigeration engineering specialists in Caerphilly. 25+ years serving commercial & industrial clients UK-wide.

• B B-Tech Heating Ltd Newport · Heating & ventilation

  Certified & trusted gas and heating engineers. Worcester Bosch Accredited, boiler finance quotes, covering Blackwood and surrounding areas.

• B B1 ROOFING Mountain Ash · Roofing

  B1 Roofing is a certified and trustworthy roofer in Caerphilly, offering a comprehensive range of roofing services with 21 years of experience. They p

• B Bagley Mobility LTD Kilgetty · Bathroom fitting

  Serving your mobility needs in Pembrokeshire. Stairlifts, repairs, servicing, hoists, ramps, disabled bathroom adaptations, level access showers and m

• B BALNEO BATHROOMS Cardiff · Bathroom fitting

  Balneo Bathrooms offers bespoke, CAD-designed premium bathrooms in Cardiff and South Wales, focusing on high-quality craft and precision for discernin

• B Barcud Coch Ltd Lampeter · Main contractor · 1-9 employees

  This website has moved. You can now find us at our new address.

• B Barnaby Road Markings Machen · Road surfacing · 1-9 employees

  Barnaby Road Markings Ltd: providing high-quality, durable road marking solutions since 1995 in South Wales and are Road Safety Markings Association a

• B Basement Waterproofing Services (UK) Ltd Tredegar · Basement works

  BWS designs and installs structural waterproofing, basement tanking, cavity drainage and ground-gas protection systems across the UK. Request a quote.

• B Bay Quantity Surveyors Ltd Swansea · Main contractor · 1-9 employees

  Bay Quantity Surveyors, based in Swansea, we specialise in a wide range of commercial services across South Wales and beyond.

• B Bayside Building Ltd Swansea · Plastering

  Trusted Swansea builders since 1989, plastering, roofing, rendering, damp proofing and refurbishments. Free quotes, call 07855 826231.

• B Bds Contracts (Mh) Ltd Milford Haven · Painting & decorating

  BDS Contracts (MH) Ltd is a multi-service industrial painting, water jetting, advanced cold cutting, and tank cleaning contractor based in Milford Hav

• B Beacon Plant Ltd Brecon · Plant hire · 1-9 employees

  Beacon Plant is your local plant hire company in Brecon that provides plant and machinery hire solutions in the UK. Call on 01874 636 900 or 07813 700

• B Beaumont Installations & Maintenance Services Ltd Prestatyn · Electrical

  Beaumont Installations & Maintenance Services Ltd provides comprehensive facilities management, ensuring buildings and their services operate optimall

• B Becker (Sliding Partitions) Ltd Llanelli · Windows & doors · 1-9 employees

  Becker UK supplies and installs a wide range of sliding folding partitions, operable walls and movable walls. Made to measure with a nationwide instal

• B Bect Building Contractors Ltd Cardiff · Civil engineering · 50-249 employees

  BECT is a long-established construction company delivering quality, reliable services in civil engineering, refurbishment, and facilities management.

• B Beech Developments Llandudno Junction · House builder

  Based in stunning locations across North Wales, our modern new build houses range from two-bed cottage apartments to five-bedroomed detached homes. Fi

• B Ben Jones Building Contractor Ltd Barry · Main contractor · 1-9 employees

  Builder based in the Vale of Glamorgan, we provide a full range of building services from small alterations to large extensions and renovations.

• B BES Steel Buildings City · Steel fabrication · 1-9 employees

  BES Steel Buildings: Custom steel frame buildings manufactured and erected nationwide. 24 years' experience, concept-to-completion service. Free quota

• B Bespoke Construction & Joinery Solutions Ltd Pontypool · Main contractor · 1-9 employees

  Experienced builders in Pontypool, South Wales. Specialising in bespoke construction and joinery, including barn conversions, heritage projects, exten

• B Bespoke Kitchens & Furniture Bridgend · Kitchen fitting · 1-9 employees

  Luxury bespoke kitchens, fine interiors, and unique handmade furniture crafted by master craftsmen in Bridgend, South Wales. Imaginative design meets

• B Bespoke Spray Studio Cardiff · Refurbishment · 1-9 employees

  Design-led kitchen refinement in Cardiff and South Wales for existing kitchens worth keeping, with cabinetry refinishing, joinery and fully coordinate

• B Bessent And Bessent Ltd Llanelli · Main contractor · 1-9 employees

  Dream home builders in Swansea. Bessent & Bessent work with top architects and designers to deliver beautifully built, expertly costed homes.

• B Best Choice Plumbing Llanelli · Plumbing

  Trusted plumber & heating engineer in Swansea. Boiler installation, repairs & LPG boiler specialists. Gas Safe registered. Call today for a free quote

• B Beton Bauen Ltd Caerphilly · Concrete works · 10-49 employees

  Beton Bauen are UK based, specialist contractors, notably delivering solutions in Concrete Repair, Ground Gas Protection, and Structural Waterproofing

• B Beztheat Blackwood · Plumbing

  Reliable Plumbing Services for Home and Business. Beztheat offers expert plumbing and heating solutions with over 20 years of experience, focusing on

• B BH Roofing Solutions Newport · Roofing

  BH Roofing Solutions offers expert residential and commercial roofing services across South Wales, specializing in repairs, renewals, and installation

• B Big Bear Refrigeration Ltd Penarth · Air conditioning

  Cardiff-based specialists in commercial refrigeration and air conditioning installation, repair, and maintenance. Operating across Wales and the South

• B Biocraft Ltd Brecon · Insulation

  Biocraft Ltd is a insulation company based in Brecon, registered at Companies House in 2025.

• B Biocraft South East Ltd Brecon · Damp proofing

  Biocraft specialises in damp proofing, condensation control, water leak detection, and home ventilation services. With over 20 years of experience, th

• B Biocraft South West Ltd Brecon · Damp proofing

  Biocraft South West: Damp proofing & basement conversion specialists in the South West. PCA accredited solutions for rising damp, penetrating damp, ti

• B Biogas Solutions Ltd. Chepstow · Design & build

  Specialist innovators in flexible membrane biogas & syngas storage systems, designing, manufacturing, and installing worldwide.

• B BIOSOL RENEWABLES UK LTD Ammanford · Heating & ventilation · 10-49 employees

  Biosol Renewables UK Ltd designs, supplies, installs and maintains biomass boilers for commercial premises, offering environmentally friendly heating

• B Bishop Bayliss Developments Caerphilly · House builder

  Bishop Bayliss Developments is a South Wales based property development company focused on creating high quality, energy efficient homes.

• B BISHOPS STONE LTD Swansea · Stonemasonry

  Bishops Stone Ltd is a dry stone walling contractor based in South Wales, specialising in building and repairing stone walls and features with a focus

• B BJ Patios and Drives Ltd Aberdaugleddau · Driveways & paving

  Trusted patio & driveway installers in Milford Haven, Pembrokeshire. 20+ years' experience, Army veteran-owned. Free quotes, call 07789 675640.

• B Black Mountain Fire Ltd Llandeilo · Fire protection

  Black Mountain Fire are expert fire safety consultants dedicated to protecting businesses and families. Offering fire engineering, risk assessments, a

• B Blue Flame Gas Solutions Porth · Heating & ventilation

  Award-winning, family-run heating engineers in South Wales. Specialising in boiler installation, servicing, and repairs for homes. Over 10 years of ex

• B Blue Mountain Air Conditioning Ltd Cwmbran · Air conditioning

  Air conditioning installation, servicing and repairs for domestic and commercial customers across South Wales and South West England. F-Gas certified

• B Bluefield Land Ltd Cardiff · House builder

  Bluefield Land specialises in acquiring brownfield sites for regeneration into eco-efficient homes, also considering commercial, retail, and industria

• B Blues Electrical Ltd Cardiff · Electrical · 10-49 employees

  Cardiff-based Blues Electrical offers professional expertise in the design and delivery of building services, specialising in electrical, fire, and se

• B Bluetube Scaffolding Ltd Newport · Scaffolding · 10-49 employees

  Quality Scaffolders for Industrial, Commercial and Domestic Access Solutions. CITB Certified Teams for All Access Requirements

• B Boiler Install 4 You Ltd Port Talbot · Heating & ventilation

  Expert boiler installation, repair & servicing across South Wales, Bristol & Gloucestershire. Gas Safe engineers. Call for free quotes!

• B Boiler Plant Maintenance Wales Ltd Cardiff · Heating & ventilation

  Boiler Plant Maintenance Wales Ltd offers expert boiler repair, installation, and servicing across Wales. With over 25 years of experience, our skille

• B BoilerCraft Pontyclun · Heating & ventilation

  Boiler servicing, repairs and new boiler installation across Cardiff and the Vale from a local Gas Safe engineer. 100+ five-star reviews. Book online.