For the first time, the internationally recognised Ice Box Challenge is coming to Ireland. Two identical structures, one built to standard regulations and one to the Passive House Standard, will hold a large block of ice each and be left in public view from July. Mosart is building both.

The old fifteen-band scale ran from A1 through A2, A3, B1, B2, B3, and so on down to G. In practice, the gaps between adjacent bands were often smaller than the margin of uncertainty in the calculation. Eight bands is a more honest reflection of what DEAP’s underlying calculation methodology can reliably distinguish.

Passive House in Ireland is no longer a niche. Professor Wolfgang Feist, founder of the Passive House Institute, visited Dublin this week to formally open three large-scale schemes totalling over 850 homes. All social and affordable housing. Mosart’s architectural team played a role in all three. Here’s why the moment matters.

Awaab’s Law sets a new benchmark for social housing. It demands faster action on hazards, stronger accountability, and healthier homes for every tenant. The future of housing is safe, responsive and focused on wellbeing.

Pipers Square shows that zero-emission housing is not a future target, it is already being delivered. With 598 Passive House apartments and verifiable performance data, the scheme demonstrates how developers can meet 2028 and 2030 regulations today.

Whitehaven, Ireland’s first completed Passivhaus scheme by Tuath and Cairn Homes, officially opened in North Dublin today. Designed by Mosart, the project sets a new benchmark for low-energy, low-carbon housing, supported by a detailed post occupancy evaluation with 1,100 sensors. A significant milestone for sustainable homes in Ireland and a proud moment for the Mosart team.

Niven Oaks in Santry marks a major milestone in Irish residential construction. With 268 apartments by Cairn Homes targeting certified Passive House performance, Mosart is providing specialist consultancy and certification support. This project demonstrates how high-density, large-scale housing can achieve ultra-low energy demand, high indoor comfort and future-proofed asset value.

The 2025 UK & Ireland Passivhaus Conference in Belfast confirmed what many in the industry already sense — Passivhaus is scaling fast. With over 600 delegates and major developers like Cairn Homes and Barratt London committing to deliver at scale, the momentum toward zero-emission building is unmistakable.

When Henry McKinney MCIOB, TecIOSH, Director at Newtownstewart Ltd, began work on the Moville Passive House, he was determined to prove that performance and design ambition could go hand in hand.