Collyweston gives its name to a roofing material that has covered buildings across the east Midlands since Roman times. Collyweston stone slate is not slate at all — it is a fissile Jurassic limestone, split by frost along its natural bedding planes into the thin, heavy slabs that define the roofscape of this part of England. Over 1,500 buildings in North Northamptonshire alone carry Collyweston roofs, and more than half of those are listed. What interests me as an architect is that a single village's geology shaped the visual identity of an entire region. The material is the architecture. The Church of St Andrew, Grade II* listed, dates from the eleventh century with additions through to the fifteenth, its own roof part of the tradition it helped establish. The village sits near Stamford on the Northamptonshire border.
Award-winning Architects in Collyweston
Material Honesty, Lasting Design
Architecture begins with material — understanding how it behaves, how it weathers, how it relates to the landscape it comes from. That conviction runs through every project our practice takes on. I founded Gresford Architects in London in 2006, and we now work from Oxford with clients across the country. I am an ARB-registered and RIBA Chartered architect, a member of SPAB — the Society for the Protection of Ancient Buildings — the Passivhaus Trust and The Green Register. The Deerings, a certified Passivhaus home in Hertfordshire, won the RIBA East Award in 2018, the year I was also a finalist for Sustainability Architect of the Year at the Building Design Awards. In 2025 I was invited to judge the British Homes Awards. Our projects have been published in Dezeen, Grand Designs Magazine and The Modern House Journal.
Architectural Services Near Stamford
Extension Design in Collyweston should respond to the village's exceptional material character — a settlement where the very geology of the parish defines the architecture. Any new work must understand the weight, colour and texture of the stone slate that covers every significant building here. Whether the brief is a ground-floor extension connecting the house to the garden, a garden room, or additional space above, the design should make the whole building feel more resolved — and should use materials that belong in this landscape.
Sustainable Design connects every project we take on, and in Collyweston the stone slate is a reminder that the most sustainable materials are those drawn from the landscape they serve — quarried locally, shaped by natural process, and built to last for centuries. PassivHaus Design sets our benchmark for new construction, delivering certified comfort with minimal energy demand. New Build Design in Collyweston should respect the limestone character of the village and the stone slate roofscape that makes it distinctive. For sites in the countryside around the parish, Paragraph 84 of the National Planning Policy Framework provides a route to architecturally outstanding homes — but the design must work with the material language that Collyweston itself defined.
EnerPHit, the Passivhaus Institute's certified retrofit standard, addresses the thermal performance of older homes without compromising their character. The cottages in Collyweston present the familiar challenge of solid-walled construction: thick walls with no insulation, draughty junctions, and a building envelope that predates any concept of thermal efficiency. Vapour-open insulation, careful airtightness detailing, and mechanical ventilation with heat recovery can transform them — warmer, quieter, dramatically cheaper to run — while the stone facades and their slate roofs continue to weather as they always have.
Renovations in Collyweston engage with a building stock where the roofing material itself carries national significance. The church's eleventh-century origins place it among the oldest buildings in the county, and any work in the village must meet that standard. North Northamptonshire Council handles planning for the parish. Through my membership of SPAB, I approach these buildings with the understanding that solid stone walls manage moisture through their mass and their lime mortar — and that any renovation must work with that behaviour.
Collyweston's geology defined an entire region's roofscape. If you are considering a project here, we would welcome the conversation.