A21architects is a small architecture practice that designs and delivers nationally significant buildings and beautiful homes.
We believe that exceptional architecture starts from a point of trust and understanding between ourselves and the client.
You can trust A21architects to bring rigorous technical precision and uncompromising aesthetic ambition to each project. Operating from London & Devon, the practice is defined by contemporary design, meticulous architectural detailing, and beautiful finishes.
For our clinical and healthcare clients, we bring unparalleled expertise to the design of highly regulated environments. Whether crafting refined, welcoming private consultation suites for Harley Street practitioners or pioneering complex NHS facilities, we intimately understand the exacting demands of modern medicine.
2018 RIBA award-winning Fetal Medicine Research Institute building for King’s College Hospital is just one of a number of bespoke IVF laboratories, embryology suites, and advanced gynaecology centers. We transform clinical briefs into human-centric, high-performance spaces that are currently setting new global standards for healthcare architecture.
For our residential clients A21 bring this same rigorous, problem-solving mindset and keen eye for detail . Whether you are an experienced property developer or a homeowner embarking on your very first rear or loft extension in London, we approach every project with the goal of maximizing space, light, and value.
Our clients appreciate that we strive to be innovative on every build, knowing that it is often the small thoughtful details can have a profound impact on daily life. As certified Passive House designers, sustainability is woven into the very fabric of our practice. We pioneer low embodied carbon strategies and high-performance building standards, ensuring our spaces—from residential family homes to complex, energy-intensive laboratories—are as environmentally responsible as they are striking.
A21architects ethos is driven by director George Petrides, a Bartlett School of Architecture alumnus with over 40 years of London practice. George finds the unexpected angle to maximize a project's effectiveness, as demonstrated by his delivery of the highly ambitious Fetal Medicine Research Institute .
Director Theo Petrides, a graduate of the world-renowned Architectural Association, brings rich experience from 15 years of working at a number of internationally significant architecture practices. Theo masterfully leads our tailored works, taking projects from their first ambitious sketch right through to flawless construction and completion.