Business Details
17 Years
experience
Trusted Architects in Truro, Cornwall
Established in 2009, D3 Architects in Truro, Cornwall, has built a reputation for delivering innovative, client-focused architectural solutions. Our practice specialises in low-energy, sustainable design, adhering to rigorous standards such as Passivhaus and the Code for Sustainable Homes. We prioritise bespoke approaches, ensuring every project reflects the unique needs of our clients, their sites, and budgets. With a strong network of local contractors and suppliers, we streamline the construction process while maintaining a commitment to environmental responsibility.Our team, registered with the Architects Registration Board (ARB) and the Royal Institute of British Architects (RIBA), provides end-to-end supportfrom initial consultations to project completion. We pride ourselves on transparency, approachability, and fostering long-term client relationships, as evidenced by our testimonials and partnerships with organisations like the National Self Build Association (NaSBA).
Services
Residential
Commercial
Sustainable Design
Project Management
Feasibility Studies
Details
- Year established: 2009
Highlights and features
- We have over 15 years of experience in residential and commercial architecture.
- Our team specialises in sustainable design, meeting Passivhaus and Code for Sustainable Homes standards.
- We collaborate with a trusted network of local builders and suppliers.
- Registered with ARB and RIBA, ensuring professional excellence and accountability.
- Personalised service with end-to-end project support and transparent communication.
Associations and certifications
- Architects Registration Board (ARB)
- Royal Institute of British Architects (RIBA)
- National Self Build Association (NaSBA)
What people say
Excellent service
Knowledgeable and personable
Delighted with results
Refreshing attention to detail
Fantastic service
Services
Residential Architecture
We create tailored residential solutions, from loft conversions to new builds, prioritising client needs and site-specific considerations. Our process includes feasibility studies, planning applications, and construction management. With a focus on sustainability, we deliver energy-efficient homes that enhance livability and long-term value.
Commercial Architecture
Our commercial services encompass masterplanning, extensions, and low-energy developments tailored to industry requirements. We guide clients through procurement methods, budget optimisation, and sustainability strategies. By understanding operational needs, we design functional spaces that align with business goals and regulatory standards.
Sustainable Design
Specialising in eco-friendly design, we integrate Passivhaus principles and natural materials to reduce environmental impact. Our expertise includes energy-efficient systems and Code for Sustainable Homes compliance. We advise on insulation, renewable energy, and construction methods that balance sustainability with practicality.
People
Simon Longworth-Riggs
Principal Architect
Simon founded D3 Architects in 2009, bringing over 15 years of experience in sustainable design and project management. He specialises in residential and commercial architecture, with a focus on client collaboration and environmental responsibility. Simon is a registered architect with ARB and RIBA.
Questions
What types of projects does D3 Architects handle?
We specialise in residential and commercial projects, including new builds, extensions, renovations, and sustainable design solutions.
How does D3 Architects support self-build clients?
As members of NaSBA, we offer tailored guidance, contractor recommendations, and remote project monitoring to assist self-builders.
Do you work outside Cornwall?
While based in Cornwall, we collaborate with clients nationwide through remote consultations and site visits.
What accreditations does D3 Architects hold?
We are registered with ARB and RIBA, and members of the National Self Build Association (NaSBA).
How do you ensure sustainability in projects?
We adhere to Passivhaus standards, recommend natural materials, and integrate energy-efficient systems to meet sustainability goals.
