ABOUT
Future vision
With offices in England and France for 25 years, THA has been at the forefront of creating an ecological architecture that leads design beyond the contemporary.
International recognition
They have earned a distinguished reputation for delivering bespoke architectural solutions, enabling clients wishes to be integrated into the most complex cultural and environmental contexts.
Global reach
Their international consultation services offers clients across the globe the opportunity to call upon their expertise to manage some of the most extreme architectural conditions, from World Heritages Sites in England and France, beaches in Guadeloupe to the highest mountain villages in the Himalayas.
Local reputation
At a local level, they are known for creating designs based on a deep understanding of the desires and sensibilities of the client.
Continual dialogue and exchange of information with the client forms the genesis from which the architecture grows to embody the character and identity they seek.
Through a process they developed, and called the Architecture of Diplomacy, they integrate the personal expression of the client into its cultural context.
Their aim for each project to be Environmentally Positive, adopts the full range of ecological design techniques to create a project that can even enhance the quality of the natural surroundings.
These processes, combined with their experience and innovation lead to refined, elegant and cost-effective designs that embody the deepest sentiments of the client, and be respectfully integrated into the cultural and natural surroundings to the benefit of all.
They form part of a whole series of processes they have developed over the years, to encompass and structure every aspect of the architectural governance in the realisation of a client's objectives.
They have named these processes Natural Systems, in reflection of their simple and fundamental rationale to achieve a definitive goal.
They are powerful and adaptable and used on all projects, from the creation of a single dwelling, the restoration of a chateau, to projects of civic scale.
Timothy Harris
Tim Harris developed a passion for architecture at a very young age and won a national conceptual design competition at the age of 19.
He went on to study architecture at the University of Edinburgh, graduating with honors from the faculty.
Tim has worked for architectural firms in Sydney, Belfast, Paris, and London before setting up his own practice. He has led projects ranging from hospitals and large retail spaces to residential buildings.


OUR TEAM


BIM Manager
Nasir Ghani
Nasir studied architecture in the Netherlands. With over 15 years of experience and a passion for DAO, he has become a fluent expert in an impressive number of specialized software suites.
Before joining THA, he worked as a BIM Coordinator for Richard Rogers Architects in London. He also has experience as a technical engineer, systems administrator, and architectural technician in Amsterdam, Rotterdam, Dublin, and London.
At THA, Nasir develops the technical drawings and systems that enable our firm to deliver the highest quality in architectural drawings and imagery.
Director of the company
For over 25 years, THA has created considered and efficient architecture, that seamlessly integrates innovation and sustainability to designs tailored to the clients’ ideal. Our practice has earned a distinguished reputation for delivering bespoke architectural solutions for ambitious projects.
With studios in England and France, the practice offers rare fluency in cross-border design—delivering work that is personal and rooted in place.
Whether restoring a château, designing a home in Provence, or working within a UNESCO World Heritage site, THA brings a quiet authority to complex briefs. Each project begins with a close reading of the site—its light, climate, and cultural memory—paired with a deep understanding of the client’s intent.
Design is guided by data and context. Solar studies shape the form. Passive systems reduce energy use. Materials are chosen for their performance, provenance, and beauty. The result is architecture that endures—not only in structure, but in spirit.
THA’s expertise lies in navigating sensitive environments and international expectations. We manage projects across languages, regulations, and landscapes, maintaining clarity from concept to completion.
Clients—private individuals, institutions, and developers—trust us to deliver buildings that are refined, responsible, and deeply personal.
CONTACTEZ NOUS
THA-FRANCE
THA-UK
English address: 16 Bronwen Crabtree Drive, Givons Grove, Leatherhead
French address: 2 Rue Paul Riquet, Fontiers Cabardès
+33634540127
timharris@live.fr

