Located on Peru Street, the Buttress-designed scheme is the first completed residential building within Adelphi Village, a new neighbourhood being delivered through a partnership between Salford City Council, the University of Salford and ECF (Homes England, L&G and Muse). Salix Homes owns and manages the development.
Willohaus continues a growing body of high-performance housing in Salford, following the Buttress’ delivery of Greenhaus* (2024). The project applies Passivhaus methodology at scale, combining fabric-first principles with rigorous on-site quality control and certification to achieve measurable energy performance and long-term operational efficiency.
The scheme comprises one- and two-bedroom apartments across a tenure mix of 30 homes for social rent and 70 for affordable rent, alongside four fully accessible ground floor apartments. Shared facilities include secure storage for 89 bicycles, supporting a low-car, active travel approach, with a limited number of on-site accessible parking.
By adopting the Passivhaus standard, Willohaus is designed to significantly reduce space heating demand, while maintaining consistent internal temperatures and high indoor air quality through mechanical ventilation with heat recovery (MVHR) systems. The approach prioritises occupant comfort, health and building longevity, while addressing fuel poverty through reduced energy consumption.
Alison Haigh, Associate, Buttress said:
"Willohaus demonstrates how Passivhaus is no longer a niche ambition but a viable, scalable model for affordable housing. The challenge was not only technical - achieving the required levels of airtightness and thermal performance - but also cultural, requiring funders to prioritise long-term building performance alongside capital cost, while ensuring that design, detailing and construction were fully aligned from the outset.
Post-occupancy evaluation on Greenhaus provided a valuable insight on how residents use their homes. The result is a building that will perform as designed, where environmental quality is embedded into everyday living.
As part of the wider Crescent Salford masterplan, Willohaus establishes a clear benchmark for how future neighbourhoods can combine architectural quality, social value and verified environmental performance to support the transition to net zero."
Willohaus forms part of a wider delivery programme across Adelphi Village, where work is now underway on 42 townhouses and 185 apartments at Farmer Norton, with a further 263 homes approved, signalling momentum behind the emerging neighbourhood.
The project sits within the broader Crescent Salford regeneration, which will deliver over 3,000 homes alongside academic, public realm and infrastructure investment across a 240-acre site at the western edge of Manchester city centre.
As UK housing providers seek to balance affordability, decarbonisation and delivery, Willohaus provides a built example of how certified performance standards can be integrated into mainstream urban housing, rather than treated as exception.
Read more about Willohaus on ECF's website: 100 new affordable, Passivhaus homes complete in Crescent Salford - ECF
Photo caption: Associate Alison Haigh (centre), pictured with the Salford City Mayor, Paul Dennett and other key partners. Photo credit: Jon Parker Lee.
*Greenhaus is a 96-home Passivhaus development on Chapel Street in Salford, also designed by Buttress for Salix Homes. At the time of completion (2024), Greenhaus was the largest Passivhaus-certified affordable housing scheme in the North West, and one of the first to demonstrate how rigorous energy performance standards could be integrated within a dense urban context and affordable rent model. More information can be found here: Greenhaus | Buttress