Cat­ja de Haas Archi­tects looks at archi­tec­ture on all scales: from build­ings, to pieces of fur­ni­ture, art instal­la­tions, urban plans, ideas and concepts. 

We feel that good archi­tec­ture is made when the project is con­sid­ered in its con­text and the right ques­tions are asked in order to come to a bal­anced, orig­i­nal pro­pos­al, that con­forms to the wish­es of the client while con­sid­er­ing the site. We help clients devel­op their own ideas and also make com­plete pro­pos­als. If part of a project is out­side of our exper­tise, we col­lab­o­rate with oth­er prac­tices. We have an inter­est in mak­ing the world a bet­ter place for all.

The office there­fore also runs a com­mu­ni­ty arts project: the Giant Dolls’ House which empha­sis­es the need for a home and com­mu­ni­ty for all, bring­ing dif­fer­ent peo­ple togeth­er. A por­tion of the fees we ask are used to invest in this project.

Catja de Haas


Catja, PhD, RIBA, qualified as an architect at Delft University under Professor Herzberger. She also holds an MA in housing and Urbanism from the Architectural Association in London. Prior to setting up on her own she worked for Itsuko Hasegawa in Tokyo and Alsop Architects in London. Between 2000 and 2005 she ran a practice, Studio CS, with Sabina Riss.

The home in miniature was the topic for her PhD by architectural design (supervisors Prof Jonathan Hill and Christine Hawley) which she finished at Bartlett school of Architecture, UCL, in 2013. The Giant Dolls’ house project is the result of her ongoing research into the use of imagination and miniature to explore the ideas of home and community and as tools to bring about change. Catja has exhibited her own work and has presented her work at conferences and universities. She has been a visiting lecturer and crit at various universities.

Sophie Walker

Architectural Assistant

Sophie obtained her MA in Architecture at The Cass, London Metropolitan University and her BA at Oxford Brookes University. She has worked at De Rosee Sa Architects and Matheson Whiteley where she worked on residential and refurbishment projects and a community pavilion in London. She has been working with Catja de Haas on the Giant Dolls’ House Project since the start of 2018 and is also part of a small team compiling a book of essays and work on the Courtier Houses and Soviet social condensers.