Construction companies in Wales

1711 construction companies across Wales.

• G Greenough & Sons Roofing Contractors Ltd. Holyhead · Roofing · 10-49 employees

  Award-winning heritage roofing specialists in natural slating, leadwork, and heritage roof restoration. Family-run since 1971 with nationwide reputati

• G Greenspace Living Ltd Abergavenny · Landscaping

  Greenspace Living offers modern garden design solutions including verandas, pergolas, composite decking, and external blinds, serving Wales and the Br

• G Greenways Electrical Llanelli · Electrical

  Expert Electrical Services for Homes and Businesses in Llangennech, Llanelli. Offering rewiring, testing, and installations with a focus on safety and

• G Griffiths Bwtrimawr Carmarthenshire · Fit-out & interiors · 10-49 employees

  Griffiths Bwtrimawr are your local Funeral Directors in Ammanford with branches covering Pontarddulais, Betws, Gwaun Cae Gurwen, Glanamman and Llandei

• G GRJ Interiors Limited Ferndale · Drylining · 1-9 employees

  Complete interior finishing services covering South Wales. Specialising in drylining, tiling, and painting for the building industry.

• G Groom Property Maintenance Ltd Cross Hands · Refurbishment · 10-49 employees

  Over 30 years of experience providing property maintenance needs across South Wales, South East and the South West of England.

• G Grosvenor Construction Ltd Rhyl · Restoration & heritage · 10-49 employees

  Multi award-winning construction company specialising in historic built environment and new build projects across the UK. Committed to quality craftsm

• G Ground Force Driveways & Landscaping Ltd Cardiff · Driveways & paving

  Driveways Cardiff, specialists in resin driveways, block paving, tarmac. Patio specialists, free surveys & quotes. 25yrs 5* service.

• G Groundwork & Leisure Services Ltd Wrexham · Groundworks

  Groundwork and Leisure Services Ltd (GLS) specialises in the supply and installation of playground and sports surfacing, and ancillary equipment for p

• G Groves Gas Ltd Cwmbran · Heating & ventilation

  Groves Gas is a family-centred business founded in 2006, aiming to be the leading independent gas, plumbing, and heating business in Wales. We pride o

• G Gs6 Developments Ltd Llanelli · Property developer · 1-9 employees

  GS6 Developments is a company based in Llanelli, Wales. The company is actively involved in the development sector.

• G GSP Electricians LTD Mountain Ash · Electrical · 1-9 employees

  For reliable emergency electricians in South Wales, contact GSP Electricians today for expert domestic and commercial services.

• G Gsr Construction Ltd Bridgend · Main contractor

  GSR Construction Ltd is a full-service building contractor delivering excellent services. We focus on safety, quality workmanship and transparent comm

• G Gwent Blast Ltd Pontypool · Refurbishment

  Gwent Blast Ltd offers mobile sandblasting services in Gwent/Torfaen for graffiti, rust, and coatings removal, plus stone refurbishment and general bu

• G Gwp Electrical Ltd Colwyn Bay · Electrical

  GWP Electrical are leading electricians and electrical contractors in Rhyl, North Wales, specialising in Domestic and Commercial installation, testing

• G Gwresogi Ltd Pwllheli · Heating & ventilation

  Renewable Heating, Plumbing & Solar Done Right. Featured By MCS See how Gwresogi is helping drive Wales' green energy transition At Gwresogi, we speci

• G Gwyn G Jones & Sons Ltd South Glamorgan · Main contractor · 1-9 employees

  Gwyn G Jones & Sons is a well-established, family-run building company with over 50 years of experience, serving South Wales. We offer high-quality wo

• G Gwynedd Safeflue Specialists Ltd Caernarfon · Roofing

  Gwynedd Safeflue Specialists Ltd offers expert chimney flue installation and servicing in Chester and North Wales. Established in 1980, they are a fam

• G Gwynt360 Ltd Cardiff · M&E contracting

  Gwynt360 offers full-circle solutions for wind turbine performance, from blade repairs to advanced enhancements, increasing efficiency and protecting

• H H S Davies Groundworks Pwllheli · Groundworks

  H S Davies Groundworks offers professional groundwork and landscaping services in Gwynedd. Established in 1998, we provide drainage, septic tank insta

• H H.D Heating Cardigan · Heating & ventilation

  HD Heating: trusted specialists in heating, renewable energy solutions, and plumbing services across Ceredigion, Pembrokeshire & Carmarthenshire.

• H H.M. Thomas (Loughor) Roofers Ltd Swansea · Roofing

  Experienced roofers in Swansea and South Wales offering a full range of roofing services including repairs, installations, and maintenance for domesti

• H H.Marshall Plumbing And Heating Services Ltd Barry · Plumbing

  H. Marshall Plumbing and Heating Services offers professional and reliable plumbing and heating services in Cardiff and the Vale of Glamorgan.

• H Ha Plumbing Services Ltd Newport · Plumbing

  Quality Plumbing at Honest Prices. We fix leaks, clogs, and install appliances for homes and businesses, covering Newport to Bristol.

• H Hacer Developments Ltd Swansea · Property developer · 1-9 employees

  Hacer Developments is a property development company based in Swansea, Wales.

• H Hale Heating and Renewables Swansea · Heating & ventilation · 1-9 employees

  Hale Heating and Renewables offers expert plumbing, heating, and solar PV solutions for domestic and commercial clients across the UK.

• H Hale Heating And Renewables Ltd Swansea · Plumbing

  Hale Heating And Renewables Ltd is a plumbing company based in Swansea, registered at Companies House in 2025.

• H Hale Homes (Wales) Ltd Neath · House builder

  Hale Homes is a family-run luxury house-builder in Neath, South Wales, established in 1996. We focus on contemporary, sustainable homes with spectacul

• H Hallgrave Structural Engineering Swansea · Extensions · 1-9 employees

  Hallgrave Structural Engineering offers expert structural engineering and project management consultancy services for residential and commercial renov

• H Hammond (Ecs) Ltd Aberdare · Rail infrastructure

  Multi-disciplined company delivering Structure Maintenance and Rail projects across England and Wales. Specialising in rail infrastructure, bridges, v

• H Haniels Electrical Ltd Swansea · Electrical

  Haniels Electrical provides reliable domestic & commercial electrical services across South Wales. Contact us for expert solutions today!

• H Harad Electrical Ltd Carmarthen · Electrical

  NICEIC registered electricians in Carmarthenshire. LED lighting, full rewires, fault finding, EICRs & exterior power. Serving domestic, commercial and

• H Harrington & Gray Ltd Merthyr Tydfil · Windows & doors

  Harrington & Gray provides professional in-house installation and renovation services for windows, doors, kitchens, bathrooms, and property maintenanc

• H Hartland Passive Fire Protection Cardiff · Fire protection · 10-49 employees

  Hartland Passive Fire Protection offers PFP services, including surveys, risk assessments, inspections, and training. They also provide complementary

• H Hartz Electrix LTD Swansea · Electrical

  Premium local electricians & OZEV-approved EV charger installers with 20+ years experience. NAPIT approved. Free quotes.

• H Harvey T Ross LTD Newport · Plumbing

  Expert plumbing, heating, and bathroom installation services in Newport. Gas Safe registered and 5-star rated for boiler repairs, heating, and luxury

• H Hatcher'S Electrical Ltd Cardiff · Electrical

  Hatcher's Electrical Ltd offers expert domestic and commercial electrical services, specialising in EV charge point and Solar PV/battery storage insta

• H Haus Garden Rooms Ltd Cardiff · Design & build

  HAUS Garden Rooms designs and builds custom, fully insulated garden rooms in South Wales, offering electrics, heating, and warranties up to 25 years.

• H Havenkey Ltd Narberth · Electrical · 10-49 employees

  National Electrical Contractors providing Design, Installation and Maintenance of all Industrial & Commercial Electrical work.

• H Hawkesford Construction Ltd Blackwood · Groundworks

  Hawkesford Construction Ltd offers a full range of building services in South Wales, from groundworks to roofing, new builds to extensions, and home i

• H Haydei Drilling Ltd Denbigh · Piling

  Based in North Wales, HayDei Drilling Limited offers specialist water borehole drilling, ground source systems, soakaway boreholes, and piling service

• H Hayes Plastering & Rendering Ltd Prestatyn · Plastering

  Hayes Plastering & Rendering: Trusted specialists in high-quality plastering and rendering services across North Wales, Chester, and Wrexham. Reliable

• H Hd Carpentry Contractors Ltd Tonypandy · Carpentry & joinery

  Commercial carpentry and fire safety services in Tonypandy and throughout South Wales. Get in touch to find out more.

• H Heat Pumps Scotland Cardiff · Heating & ventilation · 1-9 employees

  Heat Pumps Scotland provides information and connects users with professional installers for air, ground, and water source heat pump systems, promotin

• H Heat Pumps South Wales LTD Llanelli · Heating & ventilation

  Heat Pumps South Wales LTD offers expert heat pump installation, repair, and maintenance services in Cardiff and surrounding areas. Specialising in en

• H Heat Saving Specialists Llanelli · Heating & ventilation

  Reducing the cost of home energy bills by securing grants for central heating upgrades such as boilers, air source heating, radiators and extra home i

• H HeaterUp Swansea · Heating & ventilation

  Swansea Heating & Gas Specialists - Boiler Upgrades, Central Heating Systems and All Plumbing Services in South Wales. Slash bills with cost-efficient

• H Heath Roofing Service Cardiff · Roofing

  Heath Roofing Service offers emergency, non-urgent repairs, and new roofs in Cardiff and South Wales. They also provide drone surveys for enhanced ins

• H Heath Windows and Doors Cardiff · Windows & doors

  Cardiff's Premier Double Glazing Installer. The Best Solution for Windows, Doors, Garden Rooms and Replacement Conservatory Roofs.

• H HEATING AND BOILERS (DYFED) LIMITED Newcastle Emlyn · Heating & ventilation · 10-49 employees

  Gas Safe, OFTEC, MCS & HETAS registered heating engineers in Newcastle Emlyn. Boiler installation, servicing & repair across Ceredigion and Carmarthen