Based in London, our portfolio demonstrates our capability in healthcare, commercial and residential projects. Since 2002, our premise has been to provide thoughtful designs that respond to the needs of our clients in every respect. We analyse their requirements, be they aspirational, organisational or financial, and translate these, through a well managed and collaborative process,into built projects.
Our depth of understanding and years of expertise ensures that designs are tailored to produce spaces that are visually pleasing,acoustically and environmentally comfortable as well as being functional. This results in buildings that are enjoyed by their occupants and that are successful in the long run.
We are committed to delivering an exceptional service both in terms of quality and speed. The rigorous application of our Quality Assurance system together with a commitment to staying at the front of the field in terms of the use of IT, allows us to deliver all stages of projects efficiently and thoroughly. We remain directly involved in all stages of project work. Together with our team of architects and assistants we offer a dynamic, flexible and efficient response to every project.
Kerstin Sonnemann
Dipl.Ing. (TU Berlin) Architect RIBA
ARB registered architect 1998, RIBA member
Gary Toon
BA (Hons) DipArch RIBA
ARB registered architect 1993, RIBA member
Cressida Toon
BA (Hons) DipArch MA Cantab RIBA
ARB registered architect 1997, RIBA member
Zane Deruma
Architectural Assistant
BA DipArch (RTU Riga)
João Diogo
Architect
BA (Hons) Arch Int. DipArch MArch RIBA
Jonathan Holt
Architect
BA (Hons) DipArch
Joanna Lindley
Architect
BSc(Hons) BArch PgDip RIBA
Anna-Marie Lutterodt
Architect
BA (Hons) DipArch
Bert Mastaler
Architect
Dipl.Ing. (BU Weimar)
Jaume Mora
Architectural Assistant
LicArch (UIC Barcelona)
Ricardo Reis
Architect
DipArch (TU Lisbon)
Harriet Roderiques
Architectural Assistant
BA (Hons) DipArch
David Wright
Architectural Assistant
PR Arch M Arch (Prof) BBdgA

“Sonnemann Toon punch well above their weight in delivering architectural and project management services. Their design expertise and understanding of client needs and the design build process, contribute to providing a service that many larger practices would aspire to. The involvement and commitment of their partners and staff on every project has always resulted in very successful outcomes”