Our case studies showcase the work we're proud of - from new builds and extensions to thoughtful renovations and clever alterations. Each project tells a story of collaboration, craftsmanship, and problem-solving. Whether you're gathering ideas or exploring what's possible, these examples will give you a real sense of what we do and how we work.
This stunning home in Crosshaven was designed to meet full Passive House standards - an ambitious vision from the client who dreamed of a modern, energy-positive home by the harbour. Working alongside Wain Morehead Architects, O'Callaghan Construction brought that dream to life with precision, perseverance, and expert craftsmanship.
This was not a straightforward project. Built on a tricky, hard-to-access site, construction began just before the COVID-19 pandemic and was completed after the major lockdowns - a period marked by unprecedented challenges like material shortages, labour restrictions, and inflationary cost pressures. Despite all obstacles, the project stayed true to its high-performance goals.
The house itself doesn't just meet passive house certification - it exceeds it. Thanks to exceptional airtightness, insulation, and renewable energy systems, the building generates more energy than it uses. Solar panels produce surplus electricity, which is returned to the grid.
The client has shared that they are absolutely thrilled with the final result - they now enjoy a future-proofed, beautifully finished home that will perform for decades to come.
Every project starts with a conversation - if our work speaks to you, we'd love to hear about yours.
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