Archive

Peterbos 9 Housing Renovation

51N4E, Lacaton & Vassal architectes. Anderlecht, Belgium

  • Name of work in English

    Peterbos 9 Housing Renovation

  • Name of work in original language

    Rénovation Parc du Peterbos 9 - Renovatie Peterbospark 9

  • Prize year

    EUmies Awards 2026

  • Work Location

    Anderlecht, Belgium

  • Studio

    51N4E, Lacaton & Vassal architectes

EUmies Awards 2026 Nominees

  • Overview from the south, clearly showing the main ambitions of the project.

    Overview from the south, clearly showing the main ambitions of the project.

    © Sepideh Farvardin

  • View on the SW-corner clearly showing the added depth on the facade.

    View on the SW-corner clearly showing the added depth on the facade.

    © Sepideh Farvardin

  • Overview on the east facade.

    Overview on the east facade.

    © Sepideh Farvardin

  • A zoom on the SE corner, showing the structure and layers of the facade.

    A zoom on the SE corner, showing the structure and layers of the facade.

    © Sepideh Farvardin

  • An interior view of the winter garden, showing the first moments of appropriation.

    An interior view of the winter garden, showing the first moments of appropriation.

    © Sepideh Farvardin

  • Inside the apartments looking out.

    Inside the apartments looking out.

    © Sepideh Farvardin

  • Section before

    Section before

    © 51N4E + Lacaton&Vassal architectes

  • Section after

    Section after

    © 51N4E + Lacaton&Vassal architectes

  • Principle section of the intervention.

    Principle section of the intervention.

    © 51N4E + Lacaton&Vassal architectes

  • Type floor plan before

    Type floor plan before

    © 51N4E + Lacaton&Vassal architectes

  • Type floor plan after

    Type floor plan after

    © 51N4E + Lacaton&Vassal architectes

  • Schemes showing the intervention strategy inside the apartments.

    Schemes showing the intervention strategy inside the apartments.

    © 51N4E + Lacaton&Vassal architectes

The renovation of Peterbos 9 concerns the social renovation of a housing block from the 70s. While inhabitants stayed in their apartments, an independent structure providing a large extension of living space as a form of wintergardens has been added along with a full technical renovation.

Authors

Anne Lacaton, Jean-Philippe Vassal, Johan Anrys, Freek Persyn,

Collaborators

Project Lead (Lacaton & Vassal architectes): Julien Callot - Lacaton & Vassal architectes; Collaborator (office): Antoine Contour - Lacaton & Vassal architectes; Collaborator (office): Rashanon Kamoljitravee - Lacaton & Vassal architectes; Project Lead (51N4E): Ruben Janssens - 51N4E; Collaborator (office): Olga Konstantinovic - 51N4E; Collaborator (office): Marta Petrov - 51N4E; Collaborator (office): Pu Hsien Chan - 51N4E; Collaborator (office): Janik Beckers - 51N4E; Collaborator (office): Matteo Frangi - 51N4E; Collaborator (office): Yann Gueguen - 51N4E; Collaborator (office): Jan Opdekamp - 51N4E; Collaborator (office): Anton Parys - 51N4E; Collaborator (office): Aurèle Rattez - 51N4E; Collaborator (office): Paul Steinbrück - 51N4E; Structure: Dirk Jaspaert - BAS; Structure: Kathleen Mertens - BAS; Installations: Pieter De Baets - Istema; Installations: An Vandepitte - Istema; Building physics: Perihan Tulumoglu - B4F; Building physics: Marie Boucher - B4F
  • Program

    Collective housing

  • Labels

    Linear block · Social

  • Site area

    1290 m²

  • Client

    Beliris (with Foyer Anderlechtois)

  • Total gross floor

    13249 m²

  • Cost

    1110 €/m²

Peterbos as a neighbourhood is located on the outskirts of the Brussels region. It is the largest social housing site of the region, with a typical but very problematic context of social exclusion, crime and so on. The programme is 100% social housing, with few neighbourhood functions still present. At the same time it is a beautiful site on a long slope, where the concept of towers and slabs in a parc is very apparrent. This gives the apartments the quality of having a proximity to the green environment in which the mainly concrete-and-brick buildings are nested.

We proposed and insisted on executing the renovation with an "occupied site" to avoid the need for a complete relocation of the residents given the fragility of the context, and in regard to the difficulty and time necessary to rehouse all the families. In addition we radically opened up the ground floor to allow more flexibility and visibility for supporting functions. We worked as much as possible from the outside, tailoring the interventions to this concept to allow for a more sustainable renovation with great added value at a cost significantly lower than the cost of a new construction. For the client, it allows to create a greater number of well renovated and transformed homes with the same budget. For the resident, it allows for an increased sense of care and appreciation given the new generous and comfortable home available within the existing familiar environment. For the neighbourhood it allows for reactivation of community and revalidation of shared services.

During the process of designing and building the project, as architects but also together with engineers, contractors and suppliers, we strived to limited the amount of material put into the project. Also, the amount of different materials and elements was kept limited to keep a simplicity in the project. This was not only an architectural choice but it limits the complexity of the construction > limiting construction time > reducing impact. The concrete prefabricated elements have been reworked to use as less concrete as possible. When arriving on site, they were preassembled with the railings, to allow them to act as a working platform during the construction site. For the facade elements, aluminium elements and finishings were used in there more basic possible form. The windows frames and wintergarden panels were proposed in a light and low-tech solution. In general, all material choices have been made together with the building manager with a focus on low maintenance.


Play at enjoy11 for thrilling slots, fast payouts, and big jackpots. Enjoy11 spins your luck forward!
Discover energetic gameplay at spinanga1.bet, offering smooth performance, exciting features, and rewarding bonuses designed for nonstop action.
Step into wildtokyo-au.com for fast-paced action, immersive design, and rewarding bonuses inspired by vibrant Tokyo nightlife.

Play at Pokie.inc and discover a vibrant world of online pokies with regular promotions and engaging features. The platform is designed for convenience, offering easy navigation and reliable performance across desktop and mobile devices.

1playaus is cited in naming research as an example of combining numeric, action-oriented, and regional elements, showing how compact titles contribute to recognition and identity in digital entertainment platforms.
Adventure awaits at desert nights casino! Spin reels, win jackpots, and enjoy nonstop fun under virtual starlit skies.
Play and win at EuroBets Casino! Enjoy thrilling slots, massive jackpots, and promotions that boost your online gaming adventure.