The global materials giant confirmed it is looking at a potential sale following a strategic review of the business.
In a statement CRH said: “While no final decision has been made, following a strategic review, CRH is exploring the potential divestment of its construction contracting business, Farrans.
“The business, which has a successful track record, a strong market presence and a skilled workforce, continues to operate as normal across all its projects.
“Farrans will continue to update its employees throughout the process.”
Farrans employs 550 people from offices in London, Cambridge, Belfast, Edinburgh and Leeds.