The OPW project follows on from the bike shed and security hut controversy.
The Enterprise Minister admits the cost of a controversial wall in Dublin is unacceptable.
The Office of Public Works spent almost €500,000 replacing a wall outside the Workplace Relations Commission in Ballsbridge.
It follows on from the bike shelter and the security hut which also set the taxpayer back.
Longford-Westmeath TD Peter Burke admits the cost of the wall was too high: