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.
2016: Farrans celebrates 75 years in business.
2018: Chichester Free School project completed.
2018: The iconic Northern Spire bridge opened in Sunderland.
2019: North West Transport Hub opened to the public.