Lion Green Road Wins the Stirling Prize for Its Innovative Approach to Housing

Lion Green Road, a residential development in Coulsdon, South London, has won the 2026 RIBA Stirling Prize, one of the United Kingdom's most prestigious architecture awards. Designed by Mary Duggan Architects with RUFF Architects, the council-commissioned scheme was recognized for demonstrating how higher-density housing can respond to residents' needs while maintaining a strong connection to nature.

Announced on October 15, the award recognizes a development that transforms a former car park into a residential neighborhood containing 157 homes across five buildings. The project combines affordable and privately owned housing for the London Borough of Croydon.

Its design responds to a challenging sloping site through carefully positioned residential blocks, landscaped communal areas, and a new public pathway connecting Lion Green Road with nearby parkland. Rather than treating density as a reason to compromise on residential quality, the architects prioritized daylight, privacy, and access to outdoor space.

A Housing Development Shaped by Its Landscape

One of Lion Green Road's defining characteristics is its response to the site's changing elevation.

The land varies in height by approximately eight meters, creating challenges for building placement, circulation, and views. Instead of treating the topography as an obstacle, the architects used it to inform the arrangement of the five residential blocks.

Each building is positioned and rotated to respond to the terrain, creating a development that follows the landscape rather than imposing an entirely uniform layout.

The arrangement also establishes a connection between the residential street and the green parkland beyond. A new public pathway provides a route through the development, integrating it with its surroundings.

This landscape-led approach gives the project a role beyond providing housing. It creates shared spaces and connections that contribute to the wider neighborhood.

Five Buildings With a Cohesive Architectural Identity

Although the five blocks share a consistent specification, their subtle differences in height, orientation, and detailing prevent the development from appearing repetitive.

Brickwork in three shades of brown establishes a unified material palette across the buildings. Variations in brick patterns introduce texture and give each block a degree of individuality.

The restrained colors also help the buildings sit comfortably within the surrounding greenery. Rather than competing with the landscape, the architecture establishes a relationship between the built environment and the planting around it.

This approach demonstrates how consistency and variation can work together in a multi-building residential project. Shared materials establish visual continuity, while differences in form and positioning respond to the characteristics of the site.

How Lion Green Road Balances Density and Privacy

Higher-density housing can help address demand for homes, particularly where available land is limited. However, increasing the number of dwellings on a site can create challenges involving natural light, overlooking, and outdoor access.

Lion Green Road addresses these concerns through the layout of the buildings and individual homes.

According to the Royal Institute of British Architects' official project announcement, every home has a dual-aspect layout, allowing its interiors to receive daylight from two directions.

Private balconies are also positioned to reduce direct overlooking between neighboring homes. These measures help the buildings sit relatively close together while preserving residents' privacy and views.

The development demonstrates how density can be addressed through careful planning rather than simply maximizing the number of homes on a site.

Its design considers the everyday experience of residents, including how daylight enters their homes and how private outdoor spaces relate to neighboring buildings.

Shared Outdoor Spaces Encourage Community

Landscape design is central to the development's identity. The residential blocks are arranged around shared outdoor areas, with paths connecting different parts of the site.

The project includes children's play areas, a sensory trail, and residents' allotments. These amenities provide opportunities for recreation, gardening, and informal interaction.

The spaces serve different purposes while contributing to a connected residential environment. Play areas support families, allotments encourage gardening, and landscaped routes create opportunities for residents to move through the development.

The public pathway also strengthens the relationship between the housing scheme and the parkland beyond.

Rather than treating landscaping as a decorative finishing touch, the project incorporates outdoor space into its overall organization. This approach recognizes that the quality of a residential development depends partly on the spaces between buildings, not just the homes themselves.

A More Resource-Conscious Approach to Construction

Environmental considerations also informed the project.

RIBA reports that efficient construction methods, simple finishes, and a streamlined building process helped reduce carbon emissions. The consistent specification across the five blocks also provided a common framework for construction.

However, the official announcement does not provide a quantified emissions reduction or a complete operational energy assessment. The project's environmental performance should therefore be described through its documented design and construction measures rather than unsupported numerical claims.

The broader architectural lesson is that resource-conscious housing can involve decisions made throughout the design process, including material selection, construction efficiency, landscape planning, and building orientation.

Why Lion Green Road Won the 2026 Stirling Prize

The RIBA Stirling Prize recognizes projects considered significant for the evolution of architecture and the built environment. Judging criteria include design vision, innovation, accessibility, sustainability, functionality, and the experience of occupants and visitors.

Lion Green Road brings several of these considerations together in a residential development designed to meet a practical housing need.

Its 157 homes occupy a challenging site, yet the buildings are organized around shared outdoor areas and connections to the surrounding landscape. Dual-aspect layouts and carefully positioned balconies address daylight and privacy, while the material palette establishes a cohesive architectural identity.

The award recognizes the work of Mary Duggan Architects and RUFF Architects in collaboration with the London Borough of Croydon.

For the jury, the project's significance lies in its demonstration that housing density need not come at the expense of the quality of the resulting place.

What the Award Means for Future Housing Design

Lion Green Road offers a useful case study for architects, planners, and housing providers considering how to deliver more homes while maintaining a strong residential environment.

Its approach will not apply identically to every development. Site conditions, budgets, planning requirements, and local housing needs vary considerably.

Nevertheless, the project illustrates how topography, building orientation, material selection, and shared landscape can work together to shape a residential neighborhood.

The 2026 Stirling Prize highlights an approach to architecture that considers both the delivery of homes and the experiences of the people who live in them. By combining 157 dwellings with communal outdoor spaces and carefully planned residential layouts, Lion Green Road demonstrates how housing design can respond to practical needs while maintaining a distinctive relationship with its surroundings.