We are MAS - Marianne & Anthony Spennato - a French Creative Studio committed to quality in Architecture & Interior design. We combine rigorous design with our experience in projects at all levels for a distinctive design process and end product that is aesthetically and intellectually rigorous as well as financially informed.

We are Minimalists.  We value beauty, logic, honest expression of materials and clean lines that allow the architecture and its inhabitants to thrive. Above all, we want our work to be reflective of the values and characters of our clients.   

All projects are interesting to us. We enjoy listening and responding to clients and leading you through an exciting and positive architectural process. Whether your are a professional or an individual. We'll be thrilled and pleased to design for you. So come say hello! 

Our Story

Marianne has over 3 years of professional experience in architecture and interior design. She has developed her professional design skills as an Architectural Designer in London at Shacklewell architects where she has worked on over 40 house extensions and refurbishments in the London area. She has also been part of different teams in french studios mainly in Lyon. She founded MAS in 2018 with Anthony to add architectural experience to her Interior design expertise.

Marianne has earned a Master of Interior Architecture with honours from the ESAIL, and a licence in Real estate law from UFR Toulon. Her passion for Art & Architecture never stopped to grow with special attention to the works of Alvaro Siza, Fala atelier and Note design studio. Her work here.


Anthony has close to 6 years of professional experience in architecture, furniture & interior design. He has worked in London at STAC architecture and NLS architecture where he was in charge of various retail and residential projects in the UK and around the world. He had previously built his experience at the award winning Chartier Dalix studio in Paris and also in Lyon with Philippe Reach architects. He founded MAS in 2018 with Marianne whose skills bring a perfect match to his own

Anthony has earned a Master in Architecture with honours at the ENSA Lyon, and has been involved in actions with different studios and associations ever since. Inspiring works from Herzog & De Meuron, Eduardo Souto de Moura and Sol LeWitt feed his passion for Art and Architecture. His work here.