Pipers Square

Almost 600 apartments in Charlestown, every one built to the Passivhaus standard, and part of what Cairn has called the largest Passive House push in the history of the Irish State. We are the Passivhaus designer.

Pipers Square is arranged as four blocks stepping from two to ten storeys, a mix of one, two and three-bedroom homes with a creche on site. In 2026 it took certification from the Passive House Institute, the international mark rather than a local rating.

As Passivhaus designer we carry the building physics: the PHPP model for every apartment type, the airtightness layer that has to stay continuous across hundreds of repeated units, and the detailing that lets a heat pump and heat recovery do the work a boiler used to. The reward lands with residents, on the bill every month, in homes that hold a steady temperature and a constant supply of filtered fresh air.