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Business Details
29 Years
experience
Award-Winning Historic Building Architects
Established in 1997, Harris McMillan Architecture specialise in the conservation, reimagining, and renovation of historic and listed buildings. Our team of three ARB-registered architects brings over 80 years of combined experience, supported by a dedicated practice manager. As a RIBA Chartered Practice, we adhere to rigorous standards of excellence, sustainability, and client service. We prioritise collaborative working, with each client assigned a dedicated architect backed by the collective expertise of our studio-based team. Our approach centres on unlocking hidden potential in challenging projects while maintaining a commitment to leaving a positive legacy through innovative design. Based in Mid Devon, we serve clients nationally, blending cutting-edge tools with traditional craftsmanship.

Our work has earned recognition through awards and partnerships with prestigious organisations like English Heritage and the National Trust. We believe in achieving excellence through a balance of creativity, technical expertise, and ethical practice. Our studio environment fosters shared knowledge, ensuring every project benefits from our team's diverse experience. We maintain transparency in communication and pricing, with services spanning from initial consultation to project completion. Our dedication to sustainable design principles ensures our work meets modern needs without compromising historical integrity.
Services
Historic Building Conservation Architectural Renovation Listed Building Projects Sustainable Design Project Management
Details
  • Year established: 1997
Highlights and features
  • We have over 80 years combined experience in architectural conservation
  • Each project receives a dedicated architect with team support
  • We are RIBA Chartered Practice with strict quality standards
  • Our collaborative studio approach maximises design potential
  • We work nationally with local knowledge of Devon and Cornwall
Associations and certifications
  • RIBA Chartered Practice
Services
Historic Building Conservation
Specialist conservation of listed buildings and historic structures. Our expertise preserves architectural integrity while implementing modern functionality. We navigate complex planning requirements and heritage regulations to protect historical value while ensuring practical use for contemporary needs.
Architectural Renovation
Creative renovation solutions for challenging properties. We transform outdated or damaged buildings through innovative design that maintains character while enhancing usability. Our approach combines technical precision with artistic vision to unlock hidden potential in complex projects.
Project Management
Comprehensive architectural project management from concept to completion. We coordinate all aspects of design and construction, ensuring adherence to budgets, timelines and quality standards. Our holistic approach maintains design integrity throughout the building process.
Sustainable Design
Environmentally conscious design solutions for historic buildings. We integrate modern sustainability practices with traditional construction methods to reduce environmental impact while maintaining historical authenticity through energy-efficient upgrades and material selection.
Listed Building Projects
Expert navigation of listed building regulations and planning permissions. Our team specialises in working with heritage authorities to implement necessary changes while preserving architectural significance through meticulous attention to historical detail and regulatory compliance.
People
Luke McAdam
Director & Architect
With extensive experience in architectural conservation, Luke leads projects with a focus on heritage preservation. He combines technical expertise with creative problem-solving to deliver award-winning solutions for complex historic buildings across the UK.
Matt Rayner
Conservation Architect
Specialising in historic building restoration, Matt brings deep knowledge of traditional construction methods. His expertise ensures sensitive renovations that maintain architectural integrity while meeting modern functional requirements for listed properties.
Sarah Leach
Senior Architect
Sarah combines architectural innovation with practical experience in transforming challenging properties. Her work focuses on balancing contemporary needs with historical preservation, delivering functional spaces that respect original design intent.
Amy-Ruth Hill
Studio Co-ordinator
Managing day-to-day studio operations, Amy ensures seamless project coordination. Her organisational expertise supports the team's collaborative approach, maintaining efficient workflows while upholding the practice's high service standards.
Questions
What specialisms does hmad architects offer?
We specialise in historic building conservation, listed building projects, architectural renovation, and sustainable design solutions for protected structures across Devon and nationally.
Are you a RIBA Chartered Practice?
Yes, we are a RIBA Chartered Practice, meeting strict eligibility criteria including adherence to the RIBA Code of Conduct for architectural excellence.
How experienced is your team?
Our three ARB-registered architects have over 80 years combined experience specialising in challenging historic building projects with a collaborative studio approach.
Do you work outside Devon?
While based in Mid Devon, we work nationally on conservation projects, with recent commissions in Cornwall, Somerset, the Cotswolds and Pembrokeshire.
What project support do you provide?
We offer full architectural services from initial consultation through to completion, including planning applications, design development and construction management oversight.
How do you approach heritage projects?
We combine respect for historical integrity with innovative design thinking, using modern techniques to enhance traditional structures while maintaining their architectural significance and character.