Trewin Design Architects is a multi-award-winning architectural practice. Our practice is built upon a reputation for the creation of dramatic, innovative and modern architecture which is sensitive to its location. Our thoughtful designs are grounded in physical, cultural and historical context of the development project. This is reflected in the simple appearance of our buildings, particularly in rural areas, which we believe is fundamental to building design in the West Country.


We have a broad range of experience in Masterplanning; rural architecture, urban design, landscape architecture, conservation architecture and town planning. We excel in creating the very best value for our clients, providing unrivalled practical knowledge of mixed-use and residential markets to support our proposals. We have proven project management and community consultation expertise, which ensures that our clients have the dedicated support they need on what are often large, complex and long running projects.

Planning Applications

With fifty years of experience behind us, we have well established relationships with planning and building control authorities in the South West. This puts us in a strong position to advise on local planning constraints and the complexities of the planning process. We have been commissioned for a number of difficult planning consents for sensitive locations and have given evidence at multiple planning appeals. A combination of negotiating skills born out of many years of experience and an in-depth knowledge of planning policy, help us to ensure that applications are successful.


Trewin Design Architects believe that every design should have sustainability at its core. Our environmental policy commits us to delivering cost effective sustainable solutions on all our projects which helps us to produce buildings with lower running costs. We have in-house sustainable homes experts and work closely with accredited assessors to ensure we achieve optimal levels of sustainability on all our projects. We are a member of ‘Architects Declare’ and now have a fully qualified Passivhaus architect, Luis Santos, who consults across all our projects.


Trewin Design Architects are members of the Royal Institution of Chartered Surveyors and carry out a variety of building surveys. As part of our full end-to-end service we can fulfil the following;

Building Surveys | Building Condition Reports & Schedules of Repair | NBS Specifications | Building Failures Investigations & Reports | Defects Advice | Party Wall Surveyor | New Build Certification | Project Management | Contract Administration | Energy & Sustainability Appraisals | Code for Sustainable Homes Assessments | BREEAM and STROMA Accredited Assessor | Care and Repair of Historic Buildings | Fire Safety Advice

Retro Fitting

Worried about soaring energy bills? Our Chartered Surveyor, David Tithecott, undertakes Environment and Sustainability assessments and is the driving force behind our Practice’s commitment to becoming Net Zero Carbon. He can conduct a survey to assess what is right for your home or your business to improve its energy efficiency by retro fitting more sustainable solutions. If you feel you would like some advice on retro fitting your home, please just e mail or call.