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. The prof­its made are invest­ed in the run­ning of The Giant Dolls’House Project’, a com­mu­ni­ty arts project that rais­es aware­ness and funds for the impor­tance of a home and com­mu­ni­ty for all. 

Latest news


May 2019

We have recent­ly com­plet­ed this sus­tain­able fam­i­ly home in Sus­sex. It rests in an AONB and revis­its mod­ernist ideas of flex­i­bil­i­ty, vari­ety in use, inclu­siv­i­ty and scale. More infor­ma­tion can be seen here.

Third Price For Hid­den Home­less­ness Com­pe­ti­tion Organ­ised with New Hori­zon Youth Centre

September 2018

Proud to be part of the win­ning team for this impor­tant com­pe­ti­tion. Our pro­pos­al: Good Night’, com­bined a hotel and hos­tel, as a social entre­pre­neur­ship project. Good­night was writ­ten in the para­pet of the pro­posed build­ing: wish­ing all in the build­ing as well as all in the city a good night. We wish each oth­er a good night, every night, a pledge, or reminder that sleep­ing safe­ly is impor­tant: some­thing we should all work towards achiev­ing for all. 

Office Ten
The Colan­der Web­site
AJ cov­er­age

Cat­ja de Haas Archi­tects Col­lab­o­rat­ed with Rosie Bichard; Anders Luhr and Eri­ka Suzu­ki from OfficeTen. Sophie Walk­er worked on the project for Cat­ja de Haas Architects.

Front, show­ing the entrance of the cen­tre and the garden.

House in West Sussex
House in West Sus­sex is near­ing Completion

August 2018

A replace­ment dwelling of 312 m2 is almost fin­ished. A large, glazed space, of 3 meter high and a grass roof envelops two oak clad box­es. The house is small­er than the house that was there pre­vi­ous­ly and most of the glass is direct­ed towards the garden. 

The project was exe­cut­ed with tech­ni­cal sup­port from Takero Shi­maza­ki Architects. 

View towards the sea

CLT struc­ture

View of win­dow cills and garden.

Wild Flow­ers and Step­ping Stones


July 2014

the stairs move, and form a dec­o­ra­tive object in the room. This was a study for steps in the Toolk­it. They were, how­ev­er, aban­doned in favour of a sim­ple ladder.