Construction companies in Wales

1711 construction companies across Wales.

• M Madola Energy Tredegar · Solar PV · 1-9 employees

  Madola Energy provides innovative and sustainable solar power solutions for businesses and households, helping them save money and reduce carbon emiss

• M Maentwrog Masonry Ltd Blaenau Ffestiniog · Stonemasonry

  Maentwrog Masonry is a team of dedicated, qualified stonemasons with decades of experience. We work stone directly from the mountain, ensuring consist

• M MAINTY Group Newport · Refurbishment · 10-49 employees

  MAINTY Group is your one-stop shop for property, refurbishment, development, planned and reactive maintenance, and facilities management. Operating as

• M Mann Williams (Cardiff) Ltd Cardiff · Civil engineering

  Mann Williams (Cardiff) Ltd is a civil engineering company based in Cardiff, registered at Companies House in 2012.

• M Manning Construction Ltd Bridgend · Main contractor · 10-49 employees

  Manning Construction Limited is a leader in providing value-added construction services, creating successful partnerships through exceptional performa

• M Martin Taffetsauffer Building & Civil Engineering Contractors Ltd Swansea · Main contractor · 10-49 employees

  Martin Taffetsauffer Building & Civil Engineering Contractors Ltd is a construction company based in South Wales, offering a range of services includi

• M MARVAL DEVELOPMENTS LTD Swansea · Design & build · 1-9 employees

  Marval Developments is a building and property development company offering bespoke carpentry, design, and construction services for residential and c

• M MASTERFITTER WINDOWS Llandysul · Windows & doors

  MasterFitter Windows are award-winning installers of high-quality windows, doors, and glazed extensions across the UK. Known for attention to detail a

• M Matt Ward Property Services Ltd Beaumaris · Plastering

  Matt Ward Plastering & Property Maintenance offers expert plastering, painting and decorating, tiling, property maintenance, project management, and r

• M Maxime Partnership Ltd Bridgend · Main contractor · 1-9 employees

  Maxime Partnership Ltd is a Principal Contractor specialising in commercial construction projects in South Wales. Known for delivering quality project

• M Mb-Lec Ltd Newport · Electrical

  MB-lec Ltd is a family-run electrical and heating installation company with over 30 years of experience. They offer design, installation, and maintena

• M Medra Homes Bangor · House builder

  Medra is a Welsh-based property developer building well-designed homes in North Wales. They focus on creating inspired places that enable communities

• M Melah Construction Ltd Porthcawl · Main contractor

  Melah Construction Ltd is a main contractor company based in Porthcawl, registered at Companies House in 2025.

• M Melah Maintenance Ltd Porthcawl · Main contractor

  MELAH Group offers a comprehensive range of construction services, leveraging over 40 years of combined experience. Specialising in civil works and re

• M MEM Services Mountain Ash · Electrical · 1-9 employees

  MEM Services is an experienced and qualified electrical construction company based in South Wales, serving commercial, industrial, and domestic client

• M Menai Heating Ltd Llandudno · Solar PV · 10-49 employees

  Menai Heating Ltd: Renewable energy specialists delivering expertly engineered renewable systems. Commercial solar, heat pumps, and air conditioning.

• M Menai Heating Ltd Llandudno · Solar PV

  Menai Renewables are energy specialists delivering expertly engineered renewable systems for homes and businesses. We offer bespoke commercial solar s

• M MEP Freight Services LTD Newport · Carpentry & joinery · 1-9 employees

  MEP Freight Services Ltd offers specialist case making and packing services for freight forwarding in South Wales and the West. With over 25 years of

• M Metiq Ltd Swansea · Fit-out & interiors

  Metiq delivers exceptional commercial interior fit-outs for retail, healthcare, hospitality, sports, workspace, and car showrooms. Innovative design,

• M Meyrick & Powell Ltd Llangattock · Steel fabrication · 1-9 employees

  Friendly, family-run company specialising in agricultural and steel buildings, also acting as general steel fabricators. Serving South Wales and Heref

• M Mgc West Wales Ltd Aberaeron · House builder · 1-9 employees

  MGC West Wales Limited offers new builds, extensions, renovations, loft conversions, roofing, solar installations and steel structures across West Wal

• M Micem UK Ltd Cardiff · Design & build

  Micem is a leading healthcare construction company with a presence in the UK, UAE, Oman, and India, specializing in turnkey medical engineering and ho

• M Mid-Glam Decorators Ltd Tonypandy · Painting & decorating

  Trusted since 1979 for high-quality painting, protective coatings, and property restoration in South Wales. Experienced, professional, and SSIP-approv

• M Mike Voyle Electrical & Solar Ammanford · Electrical

  Professional electrical and solar services for homes, businesses and developments across South Wales, rewires, EICRs, EV chargers and solar PV.

• M Mill Bay Homes Ltd Haverfordwest · House builder

  Mill Bay Homes specialises in developing new homes in Pembrokeshire, offering shared ownership and affordable housing options. Committed to enhancing

• M Millisun Ltd Industrial Es, Pontypridd · Bricklaying · 10-49 employees

  National Brickwork Contractors offering professionalism, excellence and efficiency. Established in 1999, Millisun has completed over 500 contracts acr

• M Mint Construction & Maintenance Ltd Pontypool · Main contractor · 1-9 employees

  MINT CONSTRUCTION & MAINTENANCE LTD is a new company based in Pontypool, Torfaen.

• M Mirus Energy (Cymru) Ltd Swansea · Electrical

  Mirus Energy (Cymru) Ltd is a electrical company based in Swansea, registered at Companies House in 2022.

• M Mj Davies Carpentry & Building Ltd Pontypridd · Main contractor

  MJ Davies Carpentry & Building Ltd are specialists in Home improvements, Extensions, Renovations, Loft & Garage Conversions, Kitchens and Bathrooms. O

• M Mjrroofingsolutions Ltd Newport · Roofing

  MJR Roofing Solutions offers honest and reliable roofing services in Newport, Wales, covering all aspects of roofing, chimney repairs, and removals.

• M Mjs Energy Ltd Presteigne · Heating & ventilation

  MJS Energy design, supply and install heat pumps and renewable energy systems. Based in Presteigne, they offer national coverage for domestic and comm

• M Mk Enterprises (UK) Ltd Llanrwst · Timber frame · 1-9 employees

  MK Enterprises offers timber engineering, bridges, boardwalks, anti-slip products, environmental contracting & Playgrass, artificial dry ski slope sur

• M Mk Glazing Ltd Cardiff · Glazing

  MK Glazing Ltd offers professional glazing services in Cardiff, specialising in high-quality installations of windows, doors, and lanterns in aluminiu

• M Mmn Electrical Solutions Ltd Pontypridd · Electrical

  MMN Electrical Solutions provides expert domestic & commercial electrical services. Contact us for safe & energy-efficient solutions today!

• M Modest Property Services Newport · Heating & ventilation · 1-9 employees

  Modest Property Services offers quality home improvements, renovations, repairs, and maintenance in Newport, Cardiff, and South Wales. Get a free quot

• M Modex Buildings Ltd Cardiff · Modular & offsite construction · 1-9 employees

  MODEX BUILDINGS LTD offers modular building solutions, providing innovative and efficient spaces for various applications. Specialising in offsite con

• M Modu-Lite Build Ltd Neath · Modular & offsite construction

  UK specialists in modular retail and drive-thru construction. 14-week build programmes, 98% on-time delivery. Trusted by leading brands nationwide.

• M MODU-LITE DATA LIMITED Neath · Modular & offsite construction

  Modu-Lite designs and delivers high-performance, energy-efficient data centre solutions using prefabricated, modular infrastructure for enhanced resil

• M Modular Ceilings Ltd Colwyn Bay · Suspended ceilings

  Specialists in stretch ceilings for domestic, corporate, and swimming pool environments. Offering a vast range of colours and finishes.

• M Mon Civils Ltd Holyhead · Civil engineering

  Mon Civils Limited, Your experienced civil engineers in North Wales. Transforming visions into reality. Call us for expert solutions and unmatched pre

• M Monmouthshire Driveways and Landscaping Caldicot · Driveways & paving

  Monmouthshire Driveways and Landscaping transform properties with specialist services in driveways, block paving, tarmac, patios, and more. Free quote

• M Monnow Eco Plumb Ltd Monmouth · Plumbing

  Plumbing, heating & renovation specialists in Monmouth, Wales. Bathrooms, boilers and full renovations. Covering South Wales & England.

• M Monnow Marquees Monmouth · Main contractor · 10-49 employees

  Monnow Marquees of Monmouthshire provide marquee hire for weddings, special events, corporate events, county shows and special parties in Monmouthshir

• M Monnow Masonry Ltd Monmouth · Restoration & heritage

  Monmouth-based construction firm specialising in stone masonry, restoration of traditional stone houses and barns, tiling, plastering, rendering, ston

• M Moore Interiors Swansea · Main contractor

  Leading commercial construction company in Swansea, South Wales, offering expert building services. Trusted commercial contractors & builders for all

• M Moore Interiors (Wales) Ltd Swansea · Main contractor

  Leading commercial construction company in Swansea, South Wales, offering expert building services. Trusted commercial contractors & builders for all

• M Morgan Developments Wales Ltd Carmarthen · Property developer · 1-9 employees

  The Welsh Government is the devolved Government for Wales, responsible for a wide range of public services and policy areas.

• M Morgan Groundworks ltd. Swansea · Groundworks

  Morgan Groundworks offers professional groundworks and landscaping services in Neath, South Wales. We handle design, construction, and project managem

• M Morgan Richards Electrical Ltd Milford Haven · Electrical

  Morgan Richards Electrical Ltd offers a range of electrical installations for domestic, commercial, and industrial clients in Milford Haven, Pembrokes

• M Morganstone (Holdings) Ltd Swansea · Main contractor · 50-249 employees

  Morganstone specialises in high quality construction solutions, within the public, private, housing association sectors, within Wales.