When St Peter's medieval church collapsed in 1708, the parish did what parishes do — it rebuilt. The replacement of 1726 was plain, functional, a Georgian box in brick. But what happened next is the detail that catches my eye as an architect. In 1853, George Edmund Street arrived in Chalfont St Peter and used the church as the canvas for his first experiment in polychrome brickwork — bands of red and coloured brick wrapping the chancel and south chapel, stone-dressed gables, a semi-octagonal stair turret on the south elevation. It was bold, inventive, the work of an architect testing an idea that would later define his career. That willingness to take an existing structure and push it somewhere new, to treat rebuilding not as restoration but as an opportunity for creative ambition, is something I recognise deeply. It runs through the whole story of Chalfont St Peter — a settlement first recorded in 949, shaped by the Misbourne Valley, transformed by the railway at Gerrards Cross, and still changing today.
Award-winning Architects in Chalfont St Peter
An Architect's Practice Built on Craft and Sustainability
I founded Gresford Architects in London in 2006, and we now work with clients across the country from our Oxford studio. I am an ARB registered, RIBA Chartered architect, a member of the Passivhaus Trust and accredited by The Green Register — credentials that reflect where our deepest expertise lies: in making buildings that perform as well as they look. I trained at the Mackintosh School of Architecture in Glasgow and qualified in 2002. My membership of the Society for the Protection of Ancient Buildings keeps us grounded in the careful, forensic approach that heritage buildings demand, and it was this sensitivity that guided our work on The Great Barn in Buckinghamshire, a Grade II listed barn restoration where understanding the existing structure was everything. The Deerings, our Passivhaus home in Hertfordshire, won the RIBA East Award in 2018, and our projects have been published in Dezeen, The Modern House Journal and Grand Designs Magazine. In 2025, I was invited to judge the British Homes Awards — a recognition that spans the full range of what we do, from conservation to Passivhaus to new design.
Designing for a Village That Grew into a Town
Extension Design is where much of that opportunity begins. The village has several conservation areas, among them North Park developed from 1907 and the Firs Estate built between 1910 and 1930, both reflecting the early twentieth-century expansion that transformed Chalfont St Peter from a rural settlement into one of the largest villages in Buckinghamshire. The houses built across the village in the 1920s, 1930s and postwar decades sit on plots that were generous by the standards of their time, and many now have rooms that no longer match how families live. A kitchen that turns its back on the garden, a dining room that sits empty six days a week, a ground floor that feels like a series of corridors rather than a connected home — these are the patterns we see again and again in houses of this era. The best extensions do not simply add space; they reorganise the relationship between inside and outside, between light and movement, so that the whole house works as a single, coherent home. In the conservation areas, where the early twentieth-century character of the streetscape is protected, this work demands particular care with materials and proportions.
EnerPHit is the standard we recommend for homeowners in Chalfont St Peter who want to transform the energy performance of an existing home without starting from scratch. The interwar and mid-century houses that make up much of the village were built with solid walls, single-glazed windows and minimal insulation — comfortable enough in their day, but expensive to heat by modern standards. EnerPHit addresses this through carefully positioned insulation that respects the building's moisture dynamics, improved airtightness, and mechanical ventilation with heat recovery. The result is a home that costs a fraction of its former energy bills to run and feels genuinely different to inhabit. Having lived in a Passivhaus myself, I know that this kind of performance is the daily experience of comfort, quiet and control.
Sustainable Design is the thread that connects every project we take on. In Chalfont St Peter, where much of the housing stock predates any consideration of energy efficiency, the opportunity is enormous. We design with a fabric-first approach — getting the walls, roof, floor and windows right before adding any technology — because a building that works passively will always outperform one that relies on systems alone. It is what makes a home more comfortable to inhabit, more economical to run and more joyful to live in.
Renovations in Chalfont St Peter range from the careful conservation work that the Grade II listed Greyhound Inn on the High Street, with roots reaching back to the fourteenth century, or the surviving seventeenth- and eighteenth-century houses like Chalfont Park and Water Hall demand — where understanding the existing fabric is the essential first step — to the more comprehensive transformation of the solidly built, generously plotted interwar and mid-century homes where the structure is sound but the layout, insulation and fenestration need rethinking entirely. We approach both with the same discipline: read the building first, understand what it does well, and then design interventions that work with its logic rather than against it.
PassivHaus Design delivers the highest standard of comfort and efficiency we can achieve. For homeowners in Chalfont St Peter considering building new, a Passivhaus home achieves consistent warmth with virtually no conventional heating, through meticulous insulation, airtight construction and heat recovery ventilation. The Deerings, our RIBA award-winning Passivhaus in Hertfordshire, demonstrates what this looks like in practice — a home that performs beautifully and feels effortless to live in.
For sites beyond the village in the countryside around Chalfont St Peter, New Build Design and Paragraph 84 of the National Planning Policy Framework offer a route to creating something exceptional. Paragraph 84 permits new homes in the open countryside where the design is of outstanding quality and enhances its immediate setting — a demanding standard, but one we are well placed to meet. The Misbourne Valley landscape, with its chalk streams and gentle topography, asks for architecture that responds to the land rather than imposing upon it. That kind of context-driven design, where a building belongs to its site, is at the heart of what we do.
Whether you are extending an interwar home to create the space your family needs, improving the energy performance of a house that has served its owners well for decades, or building something entirely new in the Misbourne Valley, we would welcome the conversation. Good architecture in Chalfont St Peter begins with the same instinct that George Edmund Street brought to its church — the confidence to take what exists and make it better.