Buildings that perform.
For developers, contractors and housing bodies across Ireland, the UK and worldwide.
Architects who think in building science. Engineers who value design. For thirty years we’ve made performance the point of the building, then proven it delivers.
Passivhaus design, certification, thermal-bridge and PHPP consulting, training and post-occupancy monitoring, under one roof, across Ireland, the UK and the world.
One practice, the full loop.
What we doArchitecture
Full architectural service and masterplanning, designed to perform from the first sketch, at every scale, in every climate.
Consulting
The building physics that makes performance real, modelled, detailed, and independently certified at scale.
Learning
We trained much of the industry. Certified courses, CPD, and the ZEB Summit we founded and run.
Pulse
Post-occupancy monitoring that proves buildings perform, and feeds the evidence back into the next design.
Selected work
Projects
Shanganagh Castle
Performance isn’t a claim. It’s a number.
Every practice says “sustainable.” We design to a standard you can measure, then we keep measuring after handover, from single homes to 5,500-home towns. We know what works because we measure it.
Free tools, built to the standard.
ToolsU-value calculator
Airtightness converter
Fabric heat-loss
Thermal bridge estimator
Learn from the practice that does it.
Learning & Development
We’ve trained much of the Passivhaus industry, every course grounded in real projects, taught by the team who wrote Ireland’s national Passive House guidelines.
Not sure where you stand? Take the four-minute benchmark
Ireland’s Most Sustainable Project 2024, Senan HouseICE Awards 2026 finalistFirst certified Passivhaus in the English-speaking world, 2004