Business Details
22 Years
experience
Award-Winning Architects in York
Mass Architecture is a dynamic design-led practice founded by Charlotte Harrison and Glen McGowan in 2004. Initially based in London, we relocated to York in 2009 and have since worked extensively across Yorkshire and the North. Our reputation for distinctive design has been recognised through multiple awards in both London and Yorkshire. We prioritise a collaborative and tailored approach, guided by a passionate team of architects and designers with deep expertise in contemporary architecture and historic conservation. Our work spans residential, commercial, community, and historic sectors, delivering functional yet inspiring spaces that respect context and client needs. With over two decades of combined experience, our leadership team brings technical excellence and creative vision to every project.We pride ourselves on maintaining strong client relationships and transparent communication throughout the design and construction process. Our commitment to quality is evident in our portfolio of award-winning projects, which demonstrate our ability to balance innovation with sensitivity to heritage. We actively engage with local communities and professional networks, including roles in preserving York's historic city walls. Our team's diverse skills, from BIM expertise to hands-on construction knowledge, ensure we deliver exceptional results across diverse architectural challenges.
Services
Architectural Design
Historic Building Conservation
Residential Extensions
Commercial Projects
Community Architecture
Details
- Year established: 2004
Highlights and features
- We offer 20+ years' experience in historic building conservation and modern design
- Our collaborative approach ensures client needs shape every design decision
- Award-winning track record in Yorkshire and London architectural projects
- Team includes specialists in BIM, technical detailing and heritage conservation
- Proven expertise in navigating listed building planning processes successfully
What people say
Professional and responsive
Creative eye for design
Fantastic tradespeople
Transformed derelict barn
First class service
Services
Architectural Design
Our architectural design service creates innovative spaces that balance modern functionality with contextual sensitivity. We specialise in new-build projects and spatial reconfigurations across residential, commercial, and community sectors. Our process combines creative vision with technical precision to deliver buildings that enhance their surroundings while meeting exacting client requirements.
Historic Building Conservation
Specialist conservation service preserving historic structures while enabling modern adaptation. We navigate listed building regulations and apply traditional techniques to protect architectural heritage. Our expertise covers sensitive extensions, material restoration, and adaptive reuse of protected buildings within urban conservation areas.
Residential Extensions
Tailored residential extension solutions that respect original architecture while introducing contemporary elements. We manage full planning and construction processes for property enhancements, from kitchen extensions to complete home transformations. Our designs maximise space efficiency while maintaining aesthetic harmony with existing structures.
Commercial Projects
Comprehensive architectural services for commercial developments including office spaces, retail units, and hospitality venues. We create functional environments that reflect brand identity while meeting regulatory standards. Our experience spans new constructions and adaptive reuse of historic buildings for modern business needs.
Community Architecture
Design service focused on community-centric spaces that enhance public interaction and accessibility. We work on cultural facilities, educational buildings, and civic spaces with emphasis on inclusive design. Our approach prioritises stakeholder engagement and sustainable solutions for long-term community benefit.
People
Charlotte Harrison
Partner
Founding partner with 20+ years' experience in design and refurbishment. Specialises in commercial, community, and residential sectors. Former architecture lecturer and international festival organiser. Holds strong conservation principles alongside modern design ethos.
Glen McGowan
Partner
Co-founder specialising in historic buildings with Masters in Conservation Studies. Former chair of Friends of York Walls charity. Combines academic expertise with practical experience from high-profile London projects including BBC Broadcasting House.
Ross Harrison
Senior Architect
Technical expert with decade of experience in high-value commercial projects. Qualified architect in 2019, transitioning from construction site roles. Specialises in translating complex designs into buildable solutions while maintaining client-focused approach.
Nick Walters
Architectural Assistant
Senior assistant with RIBA qualifications and diverse project experience from modular buildings to care homes. Brings multidisciplinary perspective from previous work with Yorkon Ltd. Combines architectural practice with creative multimedia pursuits.
Murray Taylor
Architectural Technologist
Technologist with international experience across Pretoria, Johannesburg, and London. Expert in BIM and technical detailing, having led major projects like Battersea Power Station. Specialises in integrating digital workflows with traditional architectural practices.
Questions
What architectural services do you specialise in?
We specialise in contemporary architectural design and historic building conservation across residential, commercial, and community sectors.
Do you work on listed building projects?
Yes, we have extensive experience with listed buildings and have successfully navigated complex planning processes for heritage sites.
Which areas do you cover?
Primarily Yorkshire and the North, though we undertake projects nationally while maintaining strong local knowledge in York.
How do you approach the design process?
We use collaborative design workshops combined with technical expertise to create tailored solutions that balance client needs with architectural integrity.
What sustainability principles do you follow?
We integrate biodiversity net gain principles and sustainable materials while maintaining architectural quality in all our projects.
