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Award-Winning Architects in Stroud | Roger Gransmore Architect
Roger Gransmore Architect is an award-winning Stroud-based architecture practice dedicated to designing and delivering high-quality contemporary buildings that harmonise with traditional principles and natural local materials. Our practice specialises in new-build homes, extensions, and renovations of historic properties, alongside residential and community-led schemes. We pride ourselves on a collaborative and client-focused approach, ensuring that each project exceeds expectations through meticulous attention to detail and innovative design solutions. Our expertise lies in creating environmentally conscious architecture that respects classical ideas of scale and proportion while embracing modern functionality.

With a deep understanding of material performance and thermal efficiency, we craft spaces that enhance well-being through natural light and ventilation. As RIBA Chartered Architects, we bring decades of combined experience to every project, supported by a proven track record of award-winning work across the Cotswolds and beyond. Our studio, located at The Old Chapel in Oakridge Lynch, serves as both a family home and a living example of our design philosophy, blending contemporary and traditional elements to create inspiring spaces. We are committed to transparent communication, cost-effective project management, and sustainable practices that ensure enduring value for our clients.
Services
New-Build Homes Historic Renovations Residential Extensions Community-Led Schemes Sustainable Design
Highlights and features
  • We offer over 15 years of experience in sustainable and historic architecture.
  • Our team holds RIBA Chartered status, ensuring professional excellence.
  • We specialise in complex, historically sensitive site transformations.
  • Our designs prioritise natural materials and energy-efficient performance.
  • We maintain transparent cost management from planning to project completion.
Associations and certifications
  • RIBA Chartered Architects
What people say
Award-winning designs Collaborative approach Sustainable expertise Timely delivery Creative solutions
Services
New-Build Homes
We design bespoke contemporary homes tailored to clients' lifestyles and site contexts. Our approach balances modern aesthetics with traditional craftsmanship, ensuring energy efficiency and seamless integration with natural surroundings. Each project prioritises spatial elegance, material durability, and long-term environmental performance.
Historic Renovations
Specialising in the sensitive restoration of listed buildings and period properties, we preserve architectural integrity while introducing modern functionality. Our expertise includes structural upgrades, material conservation, and compliance with heritage regulations to extend the lifespan of historic structures.
Sustainable Design
Our environmentally led designs incorporate passive energy strategies, renewable materials, and climate-responsive layouts. We optimise natural light, thermal performance, and ecological landscaping to create low-impact buildings that reduce carbon footprints without compromising aesthetic quality.
Residential Extensions
We create functional, light-filled extensions that enhance existing properties while respecting original architectural styles. Our solutions maximise space efficiency and connectivity to gardens, using modern construction techniques to ensure thermal comfort and structural longevity.
Community-Led Schemes
We develop inclusive, accessible spaces for community use, from village halls to shared housing. Our participatory design process ensures projects meet local needs while achieving architectural distinction and environmental sustainability through collaborative stakeholder engagement.
People
Roger Gransmore
Director
Roger Gransmore, co-founder of Roger Gransmore Architect, brings over 25 years of experience in sustainable architecture and heritage conservation. His leadership focuses on innovative design solutions that balance tradition with modern functionality.
Jack Morton-Gransmore
Director
Jack Morton-Gransmore specialises in complex residential projects and energy-efficient building systems. With a background in structural design, he ensures technical excellence and creative problem-solving across all stages of project delivery.
Abigail Portus
Director
Abigail Portus leads community-focused initiatives and urban design projects. Her expertise in participatory planning ensures developments meet social needs while maintaining architectural integrity and environmental responsibility.
Questions
What architectural styles do you specialise in?
We specialise in contemporary designs that respect traditional principles, focusing on sustainable materials and climate-responsive architecture for both modern and historic contexts.
Can you work on listed buildings or conservation areas?
Yes, we have extensive experience with heritage projects, ensuring renovations comply with planning regulations while introducing modern functionality and energy efficiency.
How do you incorporate sustainability into your designs?
We use natural materials, passive solar design, and renewable energy systems. Our buildings optimise insulation, daylighting, and ventilation to minimise environmental impact and running costs.
Do you operate outside the Cotswolds region?
While based in Stroud, we work across Gloucestershire, the South-West, and nationally for projects requiring our specialist expertise in sustainable and heritage architecture.
What is your project delivery process?
We follow the RIBA Plan of Work stages, from initial brief and concept design through technical detailing to construction oversight, ensuring clear communication and quality control throughout.
How are project costs managed?
We provide transparent cost advice from feasibility stages onwards, working with quantity surveyors to maintain budgets without compromising design quality or material integrity.