Located at Northwood Avenue, Santry, Dublin 9, Niven Oaks is a large-scale residential scheme of 268 apartments targeting Passive House certification. The development, led by Cairn Homes, is due for completion in 2026 and forms part of Cairn’s long-term commitment to delivering high-performance, sustainable housing.
Niven Oaks joins a wider family of Cairn Passive House projects, including Pipers Square in Charlestown, Whitehaven in Santry, and Cooper Square in Seven Mills, together representing a significant leap forward for mainstream Passive House delivery in Ireland.
Design Intent and Performance Strategy
The Passive House standard sets measurable limits: space-heating demand of 15 kWh/m² a year or less, airtightness of 0.6 air changes per hour verified by a blower-door test, and mechanical ventilation with heat recovery (MVHR) for continuous fresh air. Niven Oaks was designed to those limits from the first drawing.
Early data indicates that heating costs in the Passive House apartments may be up to 40% lower than in a typical new build. That is the point of the standard: the benefit lands with the residents, every month, on the bill.
Mosart’s Role
Mosart has been appointed as the project’s specialist Passive House consultant and certification advisor. Our scope includes detailed design review, performance modelling, certification documentation, and on-site verification to ensure that the building’s realised performance meets its design intent.
Drawing on decades of experience in delivering certified Passive House buildings across Ireland and the UK, Mosart provides the technical depth and quality assurance that enable large-scale developments like Niven Oaks to meet stringent standards efficiently and confidently.
Impact and Significance
Niven Oaks represents a key milestone in the evolution of large-scale Passive House housing in Ireland. It demonstrates that climate-responsible construction and commercial viability can coexist, and that high-density, low-energy housing is not only feasible but practical.
For residents, the project means reduced running costs, improved indoor air quality, and a more stable, comfortable living environment. For Cairn Homes and the wider industry, it provides a replicable model for future residential development: one that aligns with national zero-emission targets and sets a new performance benchmark.