1940 : Led by Sam Taggart, Bernard Sunley & Co Limited complete Maghaberry airfield.
1941 : Sam Taggart takes over Sunley & Co and forms Farrans Limited of Dunmurry.
1947 : Office opens in Edinburgh.
1949 : English office opens in London.
1951 : Overseas teams are building roads and infrastructure in Sao Paulo, Brazil.
1953 : Offices open in Belfast, London, Edinburgh, Cardiff and now New York and Sao Paulo.
1954 : Readyuse Concrete Ltd is formed, pioneering the production and use of ready-mixed concrete.
1967 : Farrans expand into the Middle East, which sees the construction of the Sultan's Palace in Abu Dhabi.
1977 : T.B.F Thompson (Garvagh) Limited purchase Farrans Limited.
1978 : Farrans Limited becomes part of the global construction materials group CRH plc
2000 : The Odyssey Millennium Project is opened by US President Bill Clinton.
2005 : Farrans Limited change their name to Northstone (NI) Limited.
2005 : Farrans (Construction) Limited become a trading division of Northstone and renamed FARRANS
2008 : Victoria Square (£160m) completed one of the largest projects ever undertaken in Ireland.
2011 : M80 Stepps to Haggs, Central Scotland (£320m) completed
2012 : D1 Belfast Harbour (£50m), the UK's first purpose built offshore wind logistics facility.
2013 : Scape Partner on the Major Works Framework
2014 : Manchester Office Opens
2016 : Woking office opens