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 As passive house moves into the mainstream, construction costs are bound to keep coming down, with increasing competition among suppliers, and designers and contractors becoming familiar with the most cost-effective routes to meeting the standard. One recent self build shows that low cost passive house needn’t be a distant aspiration – it’s achievable now.

The vast majority of energy upgrade projects aim for low hanging fruit measures, and risk locking buildings and their occupants into needlessly high energy usage, environmental impact and discomfort. This recent home upgrade on the outskirts of Cork City shows what truly deep retrofit looks like.

A recently completed pilot project by Cork Institute of Technology may be a model for bringing untenably inefficient and uncomfortable office buildings up to near zero energy performance levels.

Although preconceived notions about the existence of a passive house aesthetic still abound, trailblazing projects like the Ditchingham affordable housing scheme in Norfolk show that vernacular architecture & build methods can go hand-in-hand with passive performance.

Built on a tricky site in the seaside town of Salthill, Co Galway, Ireland’s first semi-detached passive house development is designed to meet the needs of three generations from the same family.

A new house in Wexford is the first in the country to achieve an A1 Building Energy Rating and certified passive house status – arguably making it the most energy efficient building yet built in Ireland. So why did a regulatory flaw risk rendering it non-compliant? 

How do you make an old building liveable on Ireland’s wind ravaged Atlantic coast? The answer lies in the envelope, with airtightness, super insulation and the eradication of cold bridges

While the principles of low energy building apply equally for new build and upgrades, the reality is that htting passive levels becomes much trickier when retrofitting. The Passive House Institute have taken this on board and created a retrofit standard that is ambitious but achievable.

Upgrading and extending a semi-detached house on a tight site in Limerick required ingenuity from architect Patti O’Neill.

A new development at Grange Lough, Rosslare, reveals that passive houses can be made Irish – both in terms of what they’re built with, and how they look.