Lagan Group

Building the Future

From roads to runways, construction materials to civil engineering, Lagan Group operates in a diverse array of sectors constantly driven by its vision to build brighter futures.

Building the Future

Founded in 1960, Lagan Group is now one of the largest privately owned companies in Ireland, employing over 1,000 people with a turnover in excess of £350 million. Our quality products and the expertise of our people are behind countless developments around the world – from new housing developments in Northern Ireland and Britain, to highways in Oman.

Established by the late Peter Lagan in 1960, we remain a family–owned company, pairing strong values with a progressive, ambitious outlook. Today, more than 55 years later, we’re one of the UK and Ireland’s leading companies with expertise across the full spectrum of construction services. 

Leaders in our markets

We are extremely proud to be market leaders in every sector in which we operate. This didn’t happen by chance. We’re continually examining ways to make our existing products better and what else can we do to support our clients. This way, we can make sure we’re ready for whatever tomorrow brings. 

The facts and figures

We operate a diverse range of construction businesses which include: 

Lagan Asphalt Group – Based in Dublin, Lagan Asphalt Group is one of Ireland’s leading quarry materials, asphalt, bitumen and civil engineering businesses servicing Ireland, the UK and the overseas market. 

Whitemountain– Based in Lisburn, Whitemountain is Northern Ireland’s market leader in quarry materials, asphalt, surfacing, airfield maintenance, highway maintenance, bitumen and civil engineering, servicing the local and GB markets.  

Lagan Bitumen – importers, manufacturers and distributors of advanced binder and emulsion products. 

Lagan Products – the cement and clay products division of our Group produces a range of products including bulk and bagged cement, sand, roof tiles, ready mixed concrete, concrete blocks, clay bricks, flu liners and chimney systems. 

    Lagan Homes – award–winning home builders with a strong emphasis on quality, building more houses than anyone in Northern Ireland with a growing reputation in England.

      Welsh Slate – providers of the finest natural slate in the world, used in a variety of high profile heritage and other construction projects, as well as unique tableware.  

      FastHouse – innovative, modular buildings that are stylish, energy efficient and quick and easy to construct.

        Together, we have big plans for the future, working closely within the Group – and in partnership with our clients – delivering sustainable solutions across a diverse range of projects.