About Us
Mass Architecture is a dynamic, design-led practice founded by Charlotte Harrison and Glen McGowan in 2004. Initially based in London, the practice made its home in York in 2009 and has since worked on a diverse range of projects across Yorkshire and the North.
Our clients benefit from a tailored approach, guided by a passionate and experienced team of architects and designers, we endeavour to make the design process clear, collaborative, and genuinely supportive.
We believe architecture should feel approachable and grounded in real human needs, not wrapped in jargon or detached from everyday life. Our work begins with listening — understanding how people live, work, and move — and translating that insight into places that feel considered, responsible, and built to last.
We design with care and clarity, balancing creativity with technical rigour. Every project is shaped through open dialogue, thoughtful decision making, and a commitment to doing things properly. We value responsible practice; from the materials we specify to the long-term performance of the buildings we create.
Our aim is simple: to deliver architecture that serves people well. Places that feel intuitive, comfortable, and quietly confident. Places that support communities, enrich daily life, and stand the test of time.
Awards
Charlotte Harrison
Partner
Charlotte is a founding partner at Mass Architecture, with over 20 years of experience in design and refurbishment across commercial, community, and residential sectors.
Her career began with co-organizing an international architecture festival in Leeds in 1996, followed by project leadership at Allford Hall Monaghan Morris Architects, where she worked on projects for Shelter and the Barbican Arts Centre. Charlotte also taught design part-time at universities in London, Leeds, and Sheffield from 2004 to 2010.
Outside the office, Charlotte is a fine food lover, and passionate runner and cyclist, always plotting her next endurance challenge – whether it’s in the Highlands, Peaks or closer to home.
Glen McGowan
Partner
Glen is a founding partner at Mass Architecture, specializing in historic buildings and monuments. With a Masters in Conservation Studies from the University of York, he works across commercial, ecclesiastical, community, and private sectors.
Starting his career as a carpenter, Glen later studied architecture at Westminster University. Before founding Mass Architecture in 2004, he worked at MacCormac Jamieson Prichard Architects on high-profile projects like BBC Broadcasting House, Southwark Tube Station, and Cambridge University.
From 2014 to 2020, he chaired the Friends of York Walls, a local charity dedicated to preserving York’s historic city walls.
Glen has used boxing to stay fit for years, but these days you’ll find him hiking the local peaks or by the coast, casting a line for some sea fishing.
Ross Harrison
Senior Architect
Ross brings practical design and technical expertise to every stage of our projects, ensuring they meet our clients' needs. Qualifying as an architect in 2019, he has over ten years of experience working on high-value commercial, industrial, and regeneration projects before focusing on smaller residential designs.
With a background working on building sites, Ross has a solid understanding of construction and technical detailing, which serves him well when projects reach the construction phase.
Outside of work, Ross loves spending time outdoors with his young family, whether it’s long dog walks, gardening, or exploring nature—always with a good brew in hand.
Murray Taylor
Architectural Technologist
Murray recently swapped the vibrant energy of London for the timeless charm of York, where he now brings his expertise to Mass Architecture.
Graduating with a Bachelor’s degree in Architecture from South Africa in 2011, Murray’s career spans diverse projects across Pretoria, Johannesburg, and London. His journey has equipped him with a robust set of skills in BIM, technical detailing, and a wealth of international experience. Over his eight years in London, Murray played a pivotal role as the project BIM Lead on landmark projects such as Newfoundland Tower, Battersea Power Station, Future Olympia, and Wimbledon’s Media Pavilion.
Outside of the office, Murray is an avid outdoor enthusiast, enjoying cycling, hiking, and photography. He also treasures quality time with his young children.
Sarah Milton
Finance & Administration
Sarah is the Office Administrator at Mass, bringing over a decade of experience supporting architectural practices. Her career began in London, where she worked with renowned practices such as Maccreanor Lavington, Adams & Sutherland, and Ab Rogers Design.
In 2020, she returned to her hometown of York and later joined Mass Architecture, where she plays a key role in ensuring the smooth operation of the practice. Her understanding of architectural workflows allows her to support the team with admin and account management.
Beyond the office, Sarah is a passionate gardener with a particular interest in lawn care. She enjoys exchanging insights on the art of maintaining the perfect green space, bringing the same dedication and precision to her garden as she does to her work.