Business Details
17 Years
experience
Your Trusted Architectural Partner in Cornwall
Established in 2009, D3 Architects operates from Truro, Cornwall, delivering tailored architectural solutions for residential and commercial clients. Our practice prioritises sustainable design principles, adhering to Passivhaus and Code for Sustainable Homes standards while incorporating natural materials for healthier living environments. With extensive experience in new builds, extensions, and commercial projects, we maintain strong industry partnerships and hold professional registrations with the Architects Registration Board and Royal Institute of British Architects.Our approach combines technical expertise with client-focused service, offering comprehensive support from initial consultation through to project completion. We facilitate access to trusted contractors and suppliers, provide remote site inspections for distant clients, and maintain membership with the National Self Build Association to better serve bespoke construction needs. Our team's thorough documentation and collaborative ethos have earned recommendations from contractors and professionals across the sector.
Services
Residential
Commercial
Loft Conversions
Extensions
Sustainable Design
Details
- Year established: 2009
Highlights and features
- We have over 15 years of architectural experience in Cornwall
- Our team holds professional registrations with ARB and RIBA
- We specialise in Passivhaus and sustainable construction standards
- We maintain partnerships with local building control departments
- Our thorough documentation process reduces construction risks
Associations and certifications
- Architects Registration Board
- Royal Institute of British Architects
What people say
Excellent service
Knowledgeable and personable
Delighted with results
Refreshing attention to detail
Highly recommend
Services
Residential Architecture
We create tailored residential solutions including new builds, extensions, and loft conversions. Our approach prioritises spatial efficiency and sustainability while maintaining compliance with planning regulations. Clients benefit from detailed construction drawings and ongoing project support throughout the building process.
Commercial Architecture
Our commercial projects range from factory extensions to nursery schools. We develop functional spaces that meet specific industry requirements while optimising energy efficiency. The team provides masterplanning services and advises on appropriate procurement methods for each development.
Sustainable Design
Specialising in low-energy construction, we implement Passivhaus principles and recommend natural insulation materials. Our sustainable approach reduces environmental impact while creating healthier living and working environments through careful material selection and energy-efficient design.
Planning Applications
We manage the complete planning process from initial feasibility studies to final approvals. Our expertise includes negotiating with local authorities and resolving objections, ensuring smooth progression through regulatory requirements while protecting client interests.
Project Management
Our support extends through the building phase with site inspections and contract monitoring. We assist with contractor selection, provide technical guidance, and ensure adherence to design specifications while maintaining open communication channels for client queries.
People
Simon Longworth-Riggs
Principal Architect
With over 15 years' experience, Simon leads D3 Architects' design team. He specialises in sustainable construction methods and holds professional registrations with ARB and RIBA. His expertise spans residential and commercial projects, focusing on client collaboration and technical excellence.
Questions
What architectural services do you offer?
We provide residential and commercial design services including new builds, extensions, planning applications, and sustainable construction solutions tailored to client requirements.
Do you specialise in sustainable design?
Yes, we specialise in low-energy buildings using Passivhaus standards and natural materials to create environmentally responsible, healthy living spaces.
How does your design process work?
We begin with a free consultation, develop design concepts, submit planning applications, produce construction drawings, and provide ongoing project support during building phases.
Are you registered with professional bodies?
Yes, we are registered with the Architects Registration Board and members of the Royal Institute of British Architects.
Can you assist with contractor selection?
We provide access to trusted local contractors and can help with tendering processes and construction management.
Do you work outside Cornwall?
While based in Cornwall, we offer remote project management services and can travel to meet clients across the UK.
