West One, Leeds

West One, Leeds


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£4.5 million
Bruntwood Limited
March 2024
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New extension & courtyard redevelopment – Wellington Street, Leeds

The design and construction of a four-storey extension and associated courtyard, with external green walls on the West One site, located in Leeds City Centre.


The construction of the extension to both West One and Castle House, to shell and core only, included the redevelopment of the existing courtyard area, the refurbishment of the existing under-crofts and associated cladding to the facades of both Starbucks and the adjacent retail unit.

The extension connects Castle House & the West One building and creates a new prominent which draws people through the courtyard, into the rejuvenated public greenspace. The extension provides 20,000 sqft of extra office and amenity accommodation alongside a communal connection through to the wellness and cycle hub space on the lower ground floor.


The new build element is highly glazed to provide visual connections and to allow views from outside the estate through to the courtyard. The upper floors of the extension provide roof terraces that step back to reduce visual impact within the courtyard and provide office users with outdoor space. Green walls increase biodiversity, in line with the green vision for the courtyard. Greenery within the building and on the façade spills out into the courtyard, providing a lush verdant feel, and continuity of materials create a cohesive design.

The coming together of West One and Castle house has created a greater sense of place and one with a unique identity, forming a harmonious development with a clear ethos and character. It has been achieved through an enhanced public realm, alongside greater visibility and connectivity between spaces.


The re-imagined courtyard has created a safe, green haven for reflection, active use, leisure, culture and connection to nature linked with the new and existing office spaces through the integration of biophilia within the buildings, creating wellness focussed environments.

The completed project contributes to a greener future with improved local air quality from new semi-mature trees and planting and to create a mini ‘Urban Sponge’ by using large areas of soft landscaping and permeable materials, enhancing biodiversity of the site and contributing to the wider green infrastructure assets of Leeds.

Our project at West One combines architectural innovation, green spaces, and a commitment to wellness. It’s a harmonious development that enhances the local environment and provides a unique identity for the area.

“The project isn't the most straight forward scheme and it felt like the Robertson team really wanted to work collaboratively with Bruntwood to determine the right solutions for this tricky site and occupied building. The Robertson team were fully on board in working together to minimise disruption to the building occupants and this provided Bruntwood with confidence in Robertson”
Ben Parkes
Building Surveyor, Bruntwood
“Their passion and commitment for the industry is delivered to an excellent standard at site level, the workforce is extremely well considered with recreational areas, herb gardens and various health and wellbeing initiatives shared with them. The site portrays an image that is proud to be a part of the construction industry.”
Jo Rieny
Considerate Constructors