Business Details
17 Years
experience
Trusted Architects in Truro, Cornwall | D3 Architects
Established in 2009, D3 Architects operates from Truro, Cornwall, delivering tailored architectural solutions for residential and commercial clients. Our practice prioritises sustainable design, adhering to Passivhaus and Code for Sustainable Homes standards while integrating natural materials for healthier living environments. With extensive experience in new builds, extensions, and renovations, we collaborate closely with local contractors and suppliers to ensure projects align with client visions, budgets, and timelines. Our team, registered with the Architects Registration Board (ARB) and the Royal Institute of British Architects (RIBA), provides end-to-end support from initial consultation to project completion.We specialise in low-energy design, offering expert guidance on procurement methods and contract selection. Our membership with the National Self Build Association (NaSBA) enhances support for self-build clients, while our partnerships with Local Authority Building Control ensure compliance and quality. Client testimonials highlight our meticulous attention to detail, approachable nature, and ability to navigate complex planning processes. We conduct regular site inspections, provide visual updates, and maintain accessibility for ongoing client support. Our commitment to sustainability, combined with a client-centric ethos, ensures bespoke solutions that transform spaces and exceed expectations.
Services
Residential Architecture
Commercial Architecture
Sustainable Design
Project Management
Consultation
Details
- Year established: 2009
Highlights and features
- We offer 14+ years of experience in sustainable architectural design.
- Our team is registered with the Architects Registration Board (ARB) and RIBA.
- We collaborate with a trusted network of local builders and suppliers.
- We provide end-to-end project management from planning to completion.
- Our membership with NaSBA supports self-build clients with tailored expertise.
Associations and certifications
- Architects Registration Board (ARB)
- Royal Institute of British Architects (RIBA)
What people say
Excellent service
Knowledgeable and personable
Fantastic service
Refreshing attention to detail
Delighted with results
Services
Residential Architecture
We specialise in residential projects including new builds, extensions, and renovations. Our approach focuses on creating bespoke, energy-efficient homes tailored to client needs. Services encompass feasibility studies, planning applications, and construction management, ensuring seamless project delivery from concept to completion.
Commercial Architecture
Our commercial architecture services cater to diverse projects like office spaces, factories, and nurseries. We prioritise sustainable materials and efficient layouts to meet industry-specific requirements. From masterplanning to regulatory compliance, we deliver functional, future-ready spaces aligned with client budgets and timelines.
Sustainable Design
We integrate low-energy principles and natural materials into all projects. Expertise includes Passivhaus standards, insulation recommendations, and renewable energy solutions. Our sustainable approach reduces environmental impact while enhancing building performance and occupant well-being across residential and commercial sectors.
Project Management
We oversee projects from initial design to site completion, ensuring adherence to plans, budgets, and timelines. Services include contractor coordination, regulatory approvals, and on-site inspections. Our proactive management guarantees quality control and client peace of mind throughout the construction process.
Consultation
We offer expert guidance on feasibility, planning strategies, and construction methods. Free initial consultations assess project viability, while ongoing advice covers material selection, budget optimisation, and sustainable practices to ensure informed decision-making at every stage.
People
Simon Longworth-Riggs
Principal Architect
Simon leads D3 Architects with expertise in sustainable design and project management. Registered with ARB and RIBA, he specialises in low-energy buildings and client-focused solutions. His approach combines technical knowledge with a commitment to transforming client visions into award-winning architectural realities.
Questions
What architectural services do you offer?
We provide residential and commercial design, sustainable architecture, project management, and consultation services tailored to client needs.
Are you registered with professional bodies?
Yes, we are registered with the Architects Registration Board (ARB) and the Royal Institute of British Architects (RIBA).
Do you specialise in sustainable design?
Yes, we focus on low-energy buildings using Passivhaus standards and natural materials for environmentally friendly solutions.
How do you support self-build clients?
As NaSBA members, we offer tailored guidance, contractor networks, and project management to simplify self-build projects.
Can you assist with planning applications?
Yes, we manage planning submissions, negotiate with authorities, and ensure compliance for residential and commercial developments.
Do you work outside Cornwall?
While based in Cornwall, we collaborate with clients nationwide through remote consultations and site visits.
