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i29 interior architects

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Nederland
Ouder Amstel
i29 interior architects

architecture & interior design

11/06/2026

Senior Shelter
A home for a family of three generations. On the plot of an existing main residence, i29 architects designed a second, single-story home for senior residents. The 100 m² house is a carefully considered addition that respects the scale and context of the existing site. Its placement creates a natural relationship between the main and secondary dwellings, closely connected while respecting each other’s privacy. Since its completion, the grandparents have enjoyed being close to their children and grandchildren—and vice versa. Architecture and interior design are uniquely integrated into one cohesive living volume.

The new building is a single-level home beneath an exposed-rafter roof. On the north side, the bedroom and bathroom form a tranquil zone. Large sliding doors around a centrally located patio offer extended sightlines and an airy, open feel. The patio connects the kitchen, dining, and living areas to an outdoor space that naturally extends the interior. Three fully retractable sliding doors allow a seamless transition between inside and outside, while sliding panels on the west side provide privacy and shelter.

design: i29
photos:
kitchen: Gaggenau Official
modernhome customhome home house architectdesigned archdaily dezeen designmilk architizer granddesigndesignboom archello i29architects valueofcreativity

27/05/2026

The new principle in the design of the new elements at CourtHouse Utrecht building H is balance: between old and new, stateliness and homeliness, round and square forms, soft and hard materials, transparancy and a sense of security. Balance also refers to the scales of lady Justice, symbolising the weighing of arguments, evidence and testimonies - and thus the foundation of the judicial system.

Design: DP6 & i29
Size: 4000 m2
Contractor: JP van Eesteren
Installations: Nelissen ingenieurs bureau
Structural engineer: Pieters bouwtechniek Delft
Building cost: Hi-Plus Bouwadvies
Restauration expert: Bureau Vlaardingerbroek
Client: Rijksvastgoedbedrijf
User: SSR
photos: Stijn Poelstra

.poelstra

19/05/2026

Building H was constructed in 1903 on the Catharijnesingel as a municipal secondary school, designed by architect F. J. Nieuwenhuis. It was a stately building with a symmetrical U shaped floor plan, long sightliness, and a great sense of spaciousness.

Until around 1995, the school building served as an educational building. It was then converted into office space belonging to the newly constructed Utrecht Courthouse, which gave the building its current name: Building H. Continuous corridors were enclosed to create office spaces, sightlines disappeared and suspended ceilings were added. The original entrance and staircase consequently lost much of their function.

DP6 and i29 created a design that brings the clear structure of the historic building to the forefront once again, while adding a new layer that reflects SSR’s identity: a familiar, creative and inviting learning and working environment where course participants, teachers and staff feel at home.

Walls added over the decades, fire separations in the entrance hall, suspended ceilings and other clutter have been removed. The clear symmetrical structure, lofty ceilings and stately spatiality of 1903 are once again perceptible, and the craftsmanship in the detailing has been made visible. Strategic openings have been created to add transparency and sightlines, enhancing spatial connectivity and daylight pe*******on. The green inner garden has also been made accessible from the hall—an oasis at the heart of the building where the concept of meeting and learning from one another continues outdoors.

Design: DP6 & i29
Size: 4000 m2
Contractor: J.P. van Eesteren
Installations: Nelissen ingenieursbureau
Structural engineer: Pieters Bouwtechniek Delft
Building cost: HI-plus Bouwadvies
Restauration expert: Bureau Vlaardingerbroek
Client: Rijksvastgoedbedrijf
User: SSR
Photo’s / Video: Stijn Poelstra

poelstra

16/05/2026

Courthouse Building H, Utrecht by DP6 and i29

The former secondary school building on the Catharijnesingel in Utrecht has been transformed by DP6, i29 and their design team, commissioned by the Central Government Real Estate Agency. It now houses SSR, the training institute for the Judiciary and the Public Prosecution Service.

The stately building has been carefully restored and made more sustainable, allowing its original qualities to shine once again. A new time-layer has also been added, connecting with the existing architecture while aligning with the identity and ambitions of the training institute.

Design: DP6 & i29
Size: 4000 m2
Contractor: J.P. van Eesteren
Installations: Nelissen ingenieursbureau
Structural engineer: Pieters Bouwtechniek Delft
Building cost: HI-plus Bouwadvies
Restauration expert: Bureau Vlaardingerbroek
Client: Rijksvastgoedbedrijf
User: SSR
Photo’s / Video: Stijn Poelstra

poelstra

10/05/2026

New project!

Courthouse Building H, Utrecht by DP6 and i29

Building H was constructed in 1903 on the Catharijnesingel as a municipal secondary school, designed by architect F. J. Nieuwenhuis. It was a stately building with a symmetrical U shaped floor plan, long sightliness, and a great sense of spaciousness.

Until around 1995, the school building served as an educational building. It was then converted into office space belonging to the newly constructed Utrecht Courthouse, which gave the building its current name: Building H. Continuous corridors were enclosed to create office spaces, sightlines disappeared and suspended ceilings were added. The original entrance and staircase consequently lost much of their function.

Clear structure restored

DP6 and i29 created a design that brings the clear structure of the historic building to the forefront once again, while adding a new layer that reflects SSR’s identity: a familiar, creative and inviting learning and working environment where course participants, teachers and staff feel at home. Walls added over the decades, fire separations in the entrance hall, suspended ceilings and other clutter have been removed.

The clear symmetrical structure, lofty ceilings and stately spatiality of 1903 are once again perceptible, and the craftsmanship in the detailing has been made visible. Strategic openings have been created to add transparency and sightlines, enhancing spatial connectivity and daylight pe*******on. The green inner garden has also been made accessible from the hall—an oasis at the heart of the building where the concept of meeting and learning from one another continues outdoors.

Design: DP6 & i29

Size: 4000 m2
Contractor: J.P. van Eesteren
Installations: Nelissen ingenieursbureau
Structural engineer: Pieters Bouwtechniek Delft
Building cost: HI-plus Bouwadvies
Restauration expert: Bureau Vlaardingerbroek
Client: Rijksvastgoedbedrijf
User: SSR
Photo’s / Video: Stijn Poelstra

poelstra

28/03/2026

On the plot of an existing main residence, i29 architects designed a second, single-story home for senior residents: Senior Shelter. The 100 m² house is a carefully considered addition that respects the scale and context of the existing site. Its placement creates a natural relationship between the main and secondary dwellings, closely connected while respecting each other’s privacy. Since its completion, the grandparents have enjoyed being close to their children and grandchildren—and vice versa. Architecture and interior design are uniquely integrated into one cohesive living volume.

The new building is a single-level home beneath an exposed-rafter roof. On the north side, the bedroom and bathroom form a tranquil zone. Large sliding doors around a centrally located patio offer extended sightlines and an airy, open feel. The patio connects the kitchen, dining, and living areas to an outdoor space that naturally extends the interior. Three fully retractable sliding doors allow a seamless transition between inside and outside, while sliding panels on the west side provide privacy and shelter.

design:
photos:
kitchen:
modernhome customhome home house architectdesigned archdaily dezeen designmilk architizer granddesigndesignboom archello i29architects valueofcreativity

Adres

Industrieweg 29
Ouder Amstel
1115AD

Openingstijden

Maandag	09:00 - 18:00
Dinsdag	09:00 - 18:00
Woensdag	09:00 - 18:00
Donderdag	09:00 - 18:00
Vrijdag	09:00 - 18:00

Telefoon

+31206956120

Website

http://www.i29.nl/

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