Facebook has been given first refusal on the purchase of part of its European headquarters in Dublin. The social media giant is believed to have until this week to decide if it wants to buy four blocks at the former AIB Bankcentre campus in Ballsbridge.

Cushman & Wakefield, a commercial property adviser, is believed to be readying the holding for sale next month, with a price tag of €400 million.

The buildings are currently owned by the Serpentine consortium, a syndicate of companies and high-net-worth individuals assembled by Goodbody and AIB private banking.

Facebook agreed to lease the 14-acre, 80,000 sq m site in 2018 with a view to adding 5,000 employees to its operations in Ireland.

As well as the four blocks owned by

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