We are Jaspar Jansen (1970) and Jeroen Dellensen (1972) In ‘01 we joined forces and a year later i29 l interior architects was born, a creative and versatile interior design studio. Our aim is to cre-ate intelligent designs and striking images. Space is the leitmotiv,the result always clear, with a keen eye for detail. Our approach is practical yet based on strong ideas articulated in clear con-cepts. We try to get to the core of things but keep it looking simple. Our clients are open minded and involved. It is most important to us to enjoy the process together and to get everything out of it!

We are not alone in our voyage. In a short period of time many projects have been realized for a wide variety of clients, both private and business. We’ve been nominated several times for awards like the Rotterdam Design Award, dutch design awards, LAI awards and The Great Indoors award. We won the Dutch Design Prize for best interior design and The Great Indoors Award for best of-fice design. Our projects have been published in (inter) national magazines and books.

jury rapport The Great Indoors Award 2009 / interior design firm of the year:
"The fact that this firm has been nominated twice before, in the categories Concentrate & Collabo-rate and Serve & Facilitate, illustrates the convincing power of the projects of i29 Interior Archi-tects. In the jury’s eyes, this firm shows how capable it is of linking architectonic components with intensive studies of surfaces that gain maximum impact through the use of a colour or typography. This firm represents a method in which architecture and interior architecture come together in a model combination".

jury rapport The Great Indoors Award 2009 / concentrate&collaborate: (office 03)
"Temporality and sustainability are concepts difficult to reconcile. This is an observation that cer-tainly holds true for the interior, and raises an important question for the future, given that many interiors do not last longer than five years. This design for a temporary office seems to have for-mulated an answer to the call for identity and the demand for sustainability. With this simple ma-noeuvre, by which all individual elements are connected by the colour black and a simple zoning system, i29 Interior Architects formulates an intriguing answer to this demand, and presents an outstanding case study".

jury rapport The Great Indoors Award 2009 / Serve&Facilitate: (school 03)
After years of disqualification based on typology, suddenly the school seems to be once again the focal point of interest of architects and interior designers. The level of interest has led to an interi-or architecture that revisits the interface of optimum education and an optimal spatial environ-ment. The jury was deeply impressed by this project by i29 interior Architects and Snelder Archi-tects, in which they see an extraordinarily mature touch that articulates a variety of spaces in a remarkably focused way. But at the same time, the interior manoeuvres used in this project demonstrated a focused specificity in both the unique furniture designs and the service of the school’s educational mission. The jury appreciates the way in which every aspect of the interior design was approached to produce a clear image vocabulary.


Dutch design prizes 2003, nomination Poe
Dutch design prizes 2003, selection Vuurwerk
International Felt competition 2003, Winner socks for chairs
Rotterdam design prize 2003, nomination computer desk
Bathroom Design Award 2004, nomination Fagelstraat
Designboom selection ‘Kitchen is the heart of the home’ 2005
BDA Awards 2005, honarable mention teylingerhorstlaan
Dutch Design prizes 2005, CalandLyceum, winner
LAI 2009, Kantoor Gummo, finalist
LAI 2009, school Panta Rhei, finalist
The great Indoors Awards 2009, school Panta Rhei finalist
The great Indoors Awards 2009,i29 finalist Design Firm of the year
The great Indoors Awards 2009, recycled office winner
Bathroom Design Awards 2010, home 06 winner


Graphic design office DZPLY, Amsterdam
Café Lime, Amsterdam
Private house Kempenlaan, Amsterdam
Office PCC, Amsterdam
Private house zieseniskade, Amsterdam
Mobile sushi units Sushi Kings, Amsterdam
Private house Googweg, Muiderberg
Fair stand Vuurwerk, Amsterdam
DJ furniture edzon, Amsterdam
Photo agency POE, prinsengracht, Amsterdam
Restaurant de Blonde Hollander, Amsterdam
Sandwich bar cheesers, Amsterdam
Private house raphaelplein, Amsterdam
Private house Marinahavenweg, Muiderzand
Entrance hall ING twins, Amsterdam
Private house Fagelstraat, Amsterdam
Office Apollolaan, Amsterdam
Entrance hall quote media, Amsterdam
Public school ‘Caland Lyceum’, Amsterdam
Private house Teylingerhorstlaan, Wassenaar
Addikt design Movement, Amsterdam
Store-in-store offices Quarz
Public school ‘Het Veer’, Almere
Filmmore Amsterdam
Eurobox Selfstorrage
VanDam Invest Head Office Haarlem
Hotel Restaurant Nes a/d Amstel

Exhibition Energetica, Amsterdam
private house teylingerhorstlaan, wassenaar
private house C.trooststraat, Amsterdam
private house boomdwarsstraat, Amsterdam
private house denieuwemanege, Haarlem

private house Singel, Amsterdam
office Booz Allen Hamilton / pitch, Amsterdam
private house Adelaarsweg, Amsterdam
office All Capital, Amsterdam
office Gummo, Amsterdam
school Panta Rhei, Amstelveen