Business Details
6 Years
experience
Our primary focus lies in residential extensions, renovations, retrofits, and new-build houses throughout Surrey and the wider South East. Our portfolio includes loft conversions, kitchen and living space alterations, comprehensive home refurbishments, low-energy retrofit projects, heritage properties, and bespoke new dwellings. We are recognised for a clear and methodical project process that reduces uncertainty and stress for our clients. From feasibility and planning strategy through to technical design, approvals, and construction-stage assistance, each step is carefully managed. We bring strong expertise in UK planning policy, building regulations, and on-site delivery, including fulfilling the Principal Designer role under the CDM Regulations. Sustainability and long-term performance inform our work through energy-efficient design and sensitive interventions. By working collaboratively with consultants, contractors, and local authorities, we maintain consistency, quality, and confidence throughout every project.
Served areas
- Surrey, Sussex, Berkshire, Hampshire, London
Details
- Year established: 2020
- Employees: 4
- Licensed
- Insured
Highlights and features
- We provide risk identification before design, preventing costly overruns.
- Our clarity calls eliminate guesswork, giving homeowners clear cost estimates.
- We collaborate with certified planners, ensuring all regulations are met.
- Our process prioritises transparency, sharing every decision point openly.
- We offer a proven framework turning uncertainty into confidence.
Associations and certifications
- RIBA Chartered Practice
Payment methods
- Debit cards, Credit cards, Mobile payments, Bank transfers
Services
Home Renovations & Extensions
We support families who love their homes but need them to function differently. By managing the design, planning and coordination process, we reduce stress and provide reassurance throughout the project. Our approach ensures that each renovation or extension delivers practical improvements, visual clarity and long-term value without unnecessary disruption.
New Build
We support clients through the entire new build journey, providing clear structure and professional oversight throughout. From early feasibility to construction support, each stage is carefully managed. Our designs prioritise functionality, comfort, and sustainable performance. This ensures a finished home that delivers lasting value and peace of mind.
Heritage & Conservation
Heritage and conservation work demands precision, patience, and understanding. We provide structured guidance from early feasibility through to delivery, ensuring planning sensitivity and design quality remain aligned. Our aim is to protect what makes each property distinctive, while upgrading it to meet todays expectations for comfort and longevity.
Interior Architecture
We deliver interior architecture that combines disciplined planning with refined interior design. By guiding you from early ideas through to completed spaces, we ensure clarity, consistency, and confidence throughout the project. Our work results in interiors that are functional, beautifully resolved, and designed to enhance daily life for years to come.
Reviews (6)
Tom Wood
Dec 30, 2024
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We have worked closely with James on a few different projects now and it has been a great experience from design to completion.
Clear, concise design and drawings made the construction process extremely smooth. We would highly recommend James Williamson Architects.
Clear, concise design and drawings made the construction process extremely smooth. We would highly recommend James Williamson Architects.
Jeremy Crump
Aug 31, 2024
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James was an excellent architect for our downstairs renovation project, very reliable, professional, friendly and accomodating to our requirements. James took our initial thinking and came back with some fantastic designs, challenged our thinking and rescoped areas where needed. After that James was very responsive and went above and beyond with his help: setting up discussions with contractors, contacting Building Control, recommeding suppliers. We are so pleased with the finished result. Would not hesitate to recommend James.
Abhivan Chekuri
Jun 29, 2024
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Its been great working with James for my building control application. He is thorough with everything and my application got approved. Highly recommend him.
Alex
Jan 11, 2024
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James is an absolute pleasure to work with, he took a lot of time to listen and take onboard what we wanted. He carried out all the necessary paperwork with council which made things super easy for us. His drawings are extremely well detailed right down to the 3d mockup drawings of our extension which was nice touch, it gave a feeling of real progress with our project before it had even begun. I've recommended James to several friends and wouldn't hesitate in recommending him again.
James Pace
Nov 27, 2023
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Fantastic service throughout the whole design process and would highly recommend to anyone looking to renovate or extend their property.
Sally Hewison
Sep 15, 2023
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We engaged James to explore the possibility of updating our small bungalow and incorporating an additional bedroom and bathroom. Communication was very smooth and James listened attentively, understood the brief well and produced an imaginative design which used the limited space available to its best advantage. The design included floor plans and a 3D virtual walkthrough. We decided for personal reasons not to go further at the present time, but if our situation changes in the future we will be more than happy to continue working with JWA