London is a city that has always had to negotiate between what it inherits and what it builds next. That tension is part of what makes it interesting to work in. It's also what makes the question of sustainable architecture here more complex, and more important, than it might be elsewhere.
We started RISE Design Studio in 2011 with a straightforward intention: to build a practice where good design and genuine environmental performance were the same thing, not competing priorities. Thirteen years later that intention hasn't changed. Here's what it looks like in practice.
The word sustainable appears everywhere in architecture now. It's on practice websites, in planning statements, in developer brochures. Most of the time it means very little.
What we mean by it is specific. A sustainable building at RISE is one where the fabric performance has been modelled before construction begins. Where the insulation specification, airtightness target, and thermal bridging details have been designed rather than defaulted. Where the energy strategy was part of the first conversation, not added at the end to satisfy an EPC requirement.
We hold Passivhaus Designer accreditation. We use the Passivhaus Planning Package to model energy performance, overheating risk, and thermal comfort on projects where it's relevant. We specify with embodied carbon in mind: European oak rather than imported hardwoods, lime plaster and clay finishes rather than synthetic alternatives, reclaimed materials where they add quality rather than compromise it.
These aren't exceptional measures. They're how we work.
A significant portion of our work involves existing buildings, Victorian terraces, Edwardian semis, inter-war houses, buildings that were designed around coal fires and single glazing and have spent decades losing heat through solid walls and draughty floors.
Retrofitting these buildings well is one of the most important things the architecture profession can do. The embodied carbon in London's existing housing stock is carbon already spent. Working with it, rather than demolishing and starting again, carries a fraction of the environmental cost of new construction. It also tends to produce buildings with more character.
Our approach to retrofit starts with understanding what the building already does well and where the real losses are. Older buildings with thick walls have thermal mass that can work in your favour if the strategy is right. The position of windows, the orientation of the plan, the existing structural system: all of these are starting points for the design rather than obstacles to it.
Projects like Douglas House and the Ice Cream House in Hampstead demonstrate what a rigorous EnerPHit retrofit looks like in practice: super-insulation, airtight construction, MVHR, solar PV, and a building that performs dramatically better than its pre-retrofit state without losing the character that made it worth saving.
We use 3D modelling and Building Information Modelling across our projects. BIM in particular is worth explaining, because it's often misunderstood as a visualisation tool when its real value lies elsewhere.
A BIM model is a data-rich digital replica of the building. When you change a material specification, the energy performance updates. When you alter the structural strategy, the cost implications ripple through. It allows us to test decisions before they're made rather than discovering their consequences on site, and it keeps consultants and contractors working from the same information rather than different versions of the same drawings.
We also use VR to allow clients to experience their design before construction begins. This is genuinely useful, not as a presentation tool but as a decision-making one. The number of times a client has stood in their virtual kitchen and immediately identified something they wanted to change tells you everything about the gap between what a drawing communicates and what a space actually feels like.
London's planning system is one of the more complex environments to work in. Conservation areas, listed buildings, Article 4 directions, neighbouring amenity considerations, daylight and sunlight assessments: the layers of policy that apply to a typical residential project in inner London are considerable.
We've built a significant part of our practice on planning applications that others had already tried and failed. That track record comes from doing the research thoroughly, understanding the specific policy context of each site, designing around real constraints rather than hoping they'll be overlooked, and making planning arguments that anticipate objections rather than reacting to them.
For clients who want to check a practice's planning track record before appointing them, it's straightforward: search the architect's name on the local council's planning portal. The history is public. You can see what they've applied for, where, and what the outcomes were.
Sustainable design extends to how a building relates to its site and its immediate landscape. We pay attention to this, both because it affects the building's environmental performance and because the quality of outdoor space matters to the people who use it.
Native planting reduces water consumption and supports local biodiversity in ways that ornamental planting typically doesn't. Tree positioning affects solar gain and shading in ways that should be designed rather than left to chance. Green roofs and sustainable drainage systems manage rainfall in ways that reduce pressure on combined sewers, which in London is a real and growing problem.
These aren't decorative considerations. They're part of how a building sits in its environment and how it performs over time.
We're direct about this because it matters: sustainable design costs more upfront in some respects and less in others, and the long-term arithmetic is strongly in its favour.
A well-insulated, airtight building with a heat pump and solar costs less to run, sometimes significantly less. In projects we've worked on, the combination of high-performance fabric, solar generation, and battery storage has shifted households from substantial monthly energy costs to near-zero in summer. Over the lifetime of a building those numbers compound considerably.
There's also a growing body of evidence that EPC ratings are increasingly legible to buyers in the London property market. A home with an A or B rating and a recent heat pump installation is a materially different asset to one with an E or F. That gap is widening.
And the cost of getting fabric performance wrong, of a building that overheats in summer and loses heat in winter, accrues over decades. The question isn't really "how much does sustainable design cost?" It's "what does it cost not to bother?"
We're a small practice. That means the people you meet when you first talk to us are the people who work on your project. It also means we're selective about what we take on, because we'd rather do fewer projects well than spread ourselves too thin.
We're direct. If your budget and your ambitions aren't aligned, we'll tell you at the outset. If a design direction isn't working, we'll say so. If a contractor's programme looks unrealistic, we'll flag it before it becomes a problem rather than after.
We're interested in the whole project, not just the parts that get photographed. The technical drawing package, the specification, the tender process, the contract administration during construction: these are where a significant amount of value is created or lost, and we stay engaged through all of them.
The city needs to retrofit the vast majority of its existing housing stock and build its new homes to standards that are currently unusual rather than standard. That work is already underway, and it will accelerate as energy costs, regulatory standards, and buyer expectations all continue to move in the same direction.
At RISE, we think the distinction between sustainable architecture and good architecture is largely a false one. Buildings that are warm in winter, cool in summer, healthy to live in, cheap to run, and built from honest materials are simply better buildings. The environmental performance isn't a separate objective. It's part of what makes them worth building.
If you're planning a project, whether a new build, an extension, a retrofit, or something more complex, we'd be glad to have a conversation about what it could be.
→ Email us at architects@risedesignstudio.co.uk
→ Or call the studio on 020 3947 5886
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