An Taisce has complained to Dublin City Council that PVC windows are being installed in a listed building in Temple Bar that houses the Green Party headquarters.
In a letter to the council's planning enforcement manager, Ms Bernie Conlon, it said these works at the rear of 5a Fownes Street were being undertaken without planning permission.
Mr Kevin Duff, of An Taisce's Dublin City Association, said the building is a protected structure and formed part of an important group of mid-18th century houses. Calling for an immediate inspection, he said some of the PVC windows were on site, but not yet fitted to the house, which is owned by Mr Ivor Underwood and his wife Marie. Some years ago, the Underwoods were brought to court over an unauthorised extension to another of their buildings, a listed house in North Great George's Street.
Mr Eamon Ryan, the Green Party TD, said he wasn't aware of the installation of PVC windows in the Fownes Street building. "We have no control over it as we are only tenants. However, I would take An Taisce's view on board. We would certainly be concerned about it as we have long maintained that the production and disposal of PVC causes environmental problems."
The Fownes Street building presently has steel windows probably dating from the 1940s but it would previously have had traditional timber sash windows.