Blenheim Grove, by Poulsom Middlehurst, Yard Architects and New Makers Bureau is a versatile and highly sustainable shell housing scheme that has earned a 2025 RIBA London Award
2025 RIBA London Award
Blenheim Grove, Southwark
Poulsom Middlehurst, Yard Architects and New Makers Bureau for Unboxed Homes
Contract value: Confidential
GIA: 671m2
Under the Greater London Authority’s Custom Build Housing programme, the developer client wanted a different way to offer more choice in the affordable home market in London. The idea was to provide a versatile shell housing development that would enable owners to fit out the homes themselves, ensuring they get the spaces, decor and quality they want, rather than this being imposed on them by the developer.
The tight triangular site is within a residential area in Peckham Rye. The railway sits close to the rear of the homes, necessitating acoustic triple glazing for soundproofing.
Front gardens provide semi-private courtyards, creating an interstitial space between private and public – very similar to other buildings down Blenheim Grove. Neighbouring Victorian terraces and semi-detached homes are two- to three-floor buildings with pitched roofs.
At its highest, the development is three floors. The play on the elevations as a result of the internal planning and the introduction of a roof deck at second-floor level overlooking the street means that the contemporary terrace feels very much part of its context.
The architects deliberately included a split level within the units to create dynamism and flexibility to the internal layout. Each of the three-storey houses was designed so that a variety of layouts could be created within the buildings. The designers of the shells provided several options for how the homes could be internally designed by the end users, and these informed the location of decks, doors, windows and service connections.
The shells are designed to ambitious sustainability standards, with a timber structure, triple glazing throughout and good airtightness. The development is car free and allows owners to include mechanical ventilation with heat recovery (MVHR) and solar panels in the fit-out. To their credit, owners have improved on the target energy efficiency of the homes through the final design and specification, such as including air-source heat pumps for heating and hot water.
The success of the project is seen in the different ways owners have created unique homes that reflect their characters and the way they want to live. The Blenheim Grove development is a clever example of how to build more affordable houses in London for clients who want to create a more personalised home.
See the rest of the 2025 RIBA London winners here. And all our RIBA UK Award winners here.
View the full RIBA UK Awards 2025 process.
RIBA Regional Awards 2025 sponsored by Autodesk, EH Smith, Equitone and VELUX
Credits
Interior fit-outs Yard Architects, New Makers Bureau
Contractor Zog Enterprises, Yzzy Interiors (fit-out of No. 60)
M&E engineers KUT, Duntons, CBG
Planning consultant AZ Urban Studio
Acoustic engineer Apex Acoustics
Structural engineer Alan Baxter
Planning consultant Curtin & Co