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

Our Home Office pub­lished in the AJ

Exposed struc­ture and plas­ter mark Cat­ja de Haas’s base­ment office con­ver­sion. Fea­ture in the AJ writ­ten by Rob Wilson.

May 2020

Here is a link to the full arti­cle but you will need an AJ subscription.

Our new office fea­tured by e‑architect

Pub­lished by Isabelle Lomholt

May 2020

The base­ment of this Lon­don ter­raced house has been re-mod­elled to cre­ate a light, airy office for the architect’s prac­tice, com­plete with its own direct entrance. The inter­nal stairs down to the Work­space Con­ver­sion have been removed and one of the spine walls has been opened-up leav­ing the struc­ture exposed. Full sto­ry can be seen here.

The Times Mag­a­zine fea­tures Burwood

Words: Dominic Brad­bury Pho­tographs: Rachael Smith

February 2020

When it came to choos­ing the per­fect spot for a new fam­i­ly home, the coastal low­lands around Chich­ester Har­bour pulled on Cat­ja de Haas’s heart­strings. This hin­ter­land between land and sea remind­ed the Dutch archi­tect of her child­hood back in the Nether­lands, so West Sus­sex and its land­scape rep­re­sent­ed a curi­ous kind of homecoming.

Read more

Refur­bish­ment of House in Wandsworth

January 2020

This south Lon­don house has under­gone a com­plete trans­for­ma­tion, whilst retain­ing and restor­ing orig­i­nal features.

Two small bed­rooms on the top floor are sep­a­rat­ed with a cur­tain and have both a small loft room to retreat into. This reduces the height-per­cep­tion of the house and reduces the load on the foun­da­tion. A small dormer hous­es a new small room with views over the city and under the eaves a sec­ond bed­room is locat­ed. The void space is used to hang net­ting to cre­ate hammocks. 

The rafters in the cathe­dral ceil­ing have been left exposed and have been painted.

Cathe­dral ceil­ing: the house is tall and nar­row and this ceil­ing makes it look taller and bigger.

Net­ting cre­at­ing a ham­mock between spaces to relax.

Stair­case to the loft space, with dis­creet storage

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

Home­less­ness is still a huge issue, a year after this com­pe­ti­tion was launched and which was won by Mor­ris and co. We will leave this entry as a reminder of the impor­tance of the issue. We do hope to inspire hotel own­ers to incor­po­rate our ideas.

September 2018

Hid­den Home­less­ness Com­pe­ti­tion on the Colan­der Website.

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.


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.