Lucien Kroll
Lucien Kroll (13 March 1927 – 1 August 2022) was a Belgian architect. They are considered to be the founders—as early as 1960—of participatory architecture, a consultative and immersive approach to the design of the built environment. Kroll's idiosyncratic style, closely tied to the participatory design process, was the antithesis of the modernist movement.
Lucien Kroll

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- Name
- Lucien Kroll
- Born
- 13 March 1927
- Place of death
- Brussels
- Died
- 2022 · Brussels.
- Nationality
- Belgium
- Occupation
- architect · essayist · urban planner
- Education
- École nationale supérieure des arts visuels de La Cambre
- Honours
- Brussels Architecture Prize Lifetime Achievement Award
- Languages
- French
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Documentary summary
Lucien Kroll (13 March 1927 – 1 August 2022) was a Belgian architect. They are considered to be the founders—as early as 1960—of participatory architecture, a consultative and immersive approach to the design of the built environment. Kroll's idiosyncratic style, closely tied to the participatory design process, was the antithesis of the modernist movement.
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Note VALÉORINE
Lucien Kroll (1927–2022) was an architect, essayist and urban planner, of Belgian nationality. The architect was born in Brussels metropolitan area and died in Brussels. Lucien Kroll was a member of Académie d'architecture.
Languages used include French. Works are held at Design Museum Gent. Honours include Brussels Architecture Prize Lifetime Achievement Award.
Composed from admitted, traceable facts · 26 September 2026
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wikidata · Q2439897 · wikipedia · Lucien Kroll
In this article
Biography
Biography
He completed more than 100 projects.
Lucien Kroll studied at École nationale supérieure des arts visuels de La Cambre. The recorded working language is French. Work by Lucien Kroll is recorded in the collections of Design Museum Gent. Distinctions recorded are Brussels Architecture Prize Lifetime Achievement Award.

Ensemble d'habitations à Auderghem projeté par l'architecte belge Lucien Kroll. La photo est prise de l'avenue Louis Berlaimont.
CarlaCarmine
Collectie Collectie Fotoburo de Boer Inventarisnummer NL-HlmNHA_54036310 NL-HlmNHA_1478_42577K Beschrijving Bijzonder flatgebouw, naar het ontwerp van Lucien Kroll aan de Kartinistraat. Fotonummer NL-HlmNHA_1478_5028 Documenttype Topografische prenten, tekeningen en foto's Vervaardiger Engelchor, Jur (UP de Boer) Soort vervaardiger Fotograaf Annotaties HD300396 Land Nederland Provincie Noord-Holla
Jur Engelchor
Key facts
Key facts
• Name — Lucien Kroll • Born — 13 March 1927 • Place of death — Brussels • Significant Buildings — La Mémé, Oury House, Rénovation of Perseigne ZUP
Biography
Biography
Kroll was born in Brussels on 13 March 1927. His father was an engineer and his mother, a nurse. In 1945, Lucien Kroll enrolled at the Saint-Luc School in Liège, where he befriended Charles Vandenhove. In 1948, they both went on to continue their training at ENSAV de la Cambre in Brussels (today the Faculty of Architecture of the Free University of Brussels). He was also a student at the International Higher Institute of Applied Urbanism. After obtaining his degree in architecture at La Cambre in 1951, Kroll worked with architect Charles Vandenhove for several years. In 1956, Kroll met Simone Pelosse, the "ceramist of Old Lyon", at an exhibition in Brussels. Born in Lyon, trained at the School of Arts et Métiers de Paris, Simone Pelosse was, at that time, already established as a recognized ceramist. She is also politically active in the preservation of her neighborhood in the historic district of Lyon. Kroll visited her several times in Lyon before declaring his love. They became design partners and married in 1965. Together, they founded the Atelier d'architecture Simone & Lucien Kroll, which was very active in the 1960s and 1990s. During these years Lucien Kroll and his wife fought particularly hard against their designated enemy: modernism and its functionalist deviations. Kroll often referred to himself as an « anarchitect » because of his stated desire to embrace the complexities and contradictions of the communities his architecture served, rather than to serve the plans of governmental or economic powers. Kroll's architectural style involved the use of vernacular building materials and a juxtaposition of forms that gives rise to built environments that look more like they are the product of the incremental development of a village than that of a master-planned city. Kroll's success was followed by a long period where his architecture was decidedly out of fashion. Retrospectives organized in Nantes (2013), Paris (2015) and Brussels (2016) have helped to rekindle interest in their work.
The Oury House
The Oury House
• Illustration — View of the Oury House from the garden One of his first works is the Oury house, a single-family dwelling located at 137 Voie de Liège in Embourg. It was built between 1962 and 1963 for Mr. Oury, a former wood importer. Wood was also the material of choice for the house, but brick and concrete were used for the load-bearing walls, which form four regular spans. The L-shaped plan of the house opens to the south, while the staircase and the corridors which distribute the rooms are to the north. The balcony, as well as the overhanging roof, help to prevent overheating in the summer months.
La Mémé
La Mémé
• Illustration — Metro Alma station, part of the University of Louvain complex Kroll's most famous work is La Mémé—the building complex for the Medical Faculty at the University of Louvain, Belgium, built between 1970 and 1976. This project was born in the particular socio-political context of tensions between the Flemish- and French-speaking communities, which ultimately required the French-speaking university to leave Leuven. The relocated school of medicine was to be based in Woluwe-Saint-Lambert in Brussels. At the same time, the university felt the impact of the student uprisings of 1968, notably when the student body insisted that they be allowed to choose the architect for the Woluwe-Saint-Lambert campus. They chose Atelier Kroll. True to his philosophy, Kroll included the students (and others, including construction workers) in the development of the project, and, as always, based his architecture on listening to and taking their views into account. For this program, which covers nearly 4 hectares, the Kroll Atelier asked the landscape architect, Louis Le Roy, to develop the site, which is entirely pedestrian. The Mémé itself is highly idiosyncratic, involving a vast number of building materials (slate, brique, wood) and a complex, almost fragmented, facade. The buildings "aroused widespread controversy in the early 1970s (and even today) due to its their fragmented and improvisational appearance—the result of a deliberate participatory design process—in stark contrast to the adjacent massive and repetitive hospital, the embodiment of a centralized bureaucracy."
ZUP Perseigne
ZUP Perseigne
In 1978, Kroll was hired by the city government of Alençon, a French city in Normandy with a base population of 33,000 people. Kroll was to fill the role of consulting architect for the restructuring and renewal of the public spaces in the ZUP of Perseigne. ZUP is the French acronym for Priority Urbanisation Zone. The Perseigne ZUP was a very large, low income housing development built over the 1963–1969 period with units designed to house 6,500 inhabitants in 2300 dwellings. The Perseigne development was typical of many built during France's post-War housing construction drive.The inhabitants of the ZUP were initially rural families who had moved to the city and, later, immigrants from such countries as Algeria, Morocco, Portugal, Spain and Turkey. The site of the ZUP was adjacent to a household appliances factory (Moulinex) and employment tended to be either in blue collar jobs or in low paid office work. Prior to Kroll's involvement in the project the Brazilian sociologist, Arlindo Stefani spent 4 months embedded in the ZUP and helping its inhabitants to formulate their ideas on how to improve it. Later the urbanist, Jean-Jacques Argenson, who both lived and worked in the ZUP, continued consultations with inhabitants. This proved to be an essential input for Kroll, who was only present on the site two times per month. These consultations resulted in landscapes (planted buttes) that eased problems of speeding cars and parking lots designed to respect the principle of "two trees for one car". Kroll and others also rethought the pre-existing design for a middle school, siting it centrally within the ZUP (not in a separate site for schools), a change that enhanced foot traffic through the ZUP. Along with a new community center, the school also helped to form a central plaza where the weekly farmers' market was held. These changes helped to establish a community center for the ZUP. Kroll also built extensions on top of and next to existing buildings that drew inspiration from the design of regional dwellings.
Selected works
Selected works
• Illustration — Southern facade of the Oury House • Illustration — Détail of the southern facade of the Oury House
Identity
Identity
Lucien Kroll is recorded as architect, essayist and urban planner. Recognition and collections. Kroll received Brussels Architecture Prize Lifetime Achievement Award.
Life and career
Dated record
Life and career
The full dated record · 2 entries
1927
Lucien Kroll born at Brussels metropolitan area.
2022
Lucien Kroll died at Brussels.
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
Brussels metropolitan area.
Birth place
Brussels.
Death place
Philosophy of architecture
Critical of the authoritarian relationship between architect and user, Kroll developed a unique approach to the practice of architecture. Throughout his career, Kroll opposed the industrialization of housing and promoted an architecture that is adapted as closely as possible to the self-expressed needs of the inhabitants, even when there were contradictions and difficulties of communication. He is thus against "disciplinary alignment" and sought to liberate architecture by means of consultative, immersive and inter-disciplinary methods. The architecture produced can therefore only be collective and participatory. This participatory concept focuses on the human in the projects and casts the architect not as decision-maker, but as a mediator. This involved direct contacts with the future users of the project with a view to determining their wants and concerns. In applying the methods of participatory architecture, called "incrementalism" by Kroll, architects are to consult, bring together, immerse themselves in neighborhoods and rely on the expertise of psychologists, sociologists, ethnologists and pedagogues.
Primary material
Documents and archives
scholarly publication
- Kroll, Lucien, The Visual Dictionary of Interior Architecture and Design, 2009
Scholarly · Crossref registry · 2009
- Lucien Kroll, Maison Médicale, Modern Architecture Through Case Studies 1945 to 1990, 2012
Scholarly · Crossref registry · 2012
- Simone & Lucien Kroll : ordre et désordres, une architecture habitée (textes & dessins) + Simone & Lucien Kroll : soixante et une architectures manifestes + Architectures de Simone et Lucien Kroll par Yves Bélorgey (tableaux et dessins), Critique d’art, 2015
Scholarly · Crossref registry · 2015
Institutional database
- Wikidata, structured authority record Q2439897: Lucien Kroll
Scholarly · Wikimedia Foundation
reference work
- “Lucien Kroll”, English Wikipedia, consulted as further reading
Reputable secondary · Wikipedia
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.La mort de Lucien Kroll, architecte écologiste et libertaire. Le Monde.fr. 2022-08-04.
- 2.Charles Vandenhove. Fondation Jeanne Charles Vandenhove.
- 3.Histoire. Fondation Jeanne Charles Vandenhove.
- 4.RÉSURRECTION DU VIEUX LYON. Le Monde.fr. 1962-08-30.
- 5.Bouchain, Patrick. Lucien et Simone Kroll: Une Architecture Habitée. Actes Sud. 2013. 978-2-330-02145-0.
- 6.Lucien et Simone Kroll. Brussels Architecture Prize.
- 7.Schuman, Tony. PARTICIPATION, EMPOWERMENT, AND URBANISM: Design and Politics in the Revitalization of French Social Housing. Journal of Architectural and Planning Research. 4. 349–359. 1987. 0738-0895.
- 8.CIVA Brussels
- 9.Zuerich, ETH-Bibliothek. Lucien Kroll, architecte incrémental. E-Periodica. 139. 7. 25. 2013. 10.5169/seals-323112.
- 10.Habitation à Embourg: architecte: Lucien Kroll. La Maison. 378–380. 1966.
- 11.Charlier, Sébastien. Guide architecture moderne et contemporaine 1895-2014 Liège. 327. 2014. 978-2-8047-0192-5.
- 12.Site de la Mémé à Woluwe-Saint-Lambert — Patrimoine – Erfgoed. patrimoine.brussels.
- 13.Hill, Jonathan. The Use of Architects. Urban Studies. 38. 2. 351–365. 2001. 0042-0980.
- 14.Kroll, Lucien. An Architecture of Complexity. MIT Press. 1987. 0-262-61047-7.
Bibliography printed in the source article · 1
- Muriel Emmanuel, Contemporary Architects. New York: St. Martin's Press, 1980.
References
Citations
References
Each reference names the institution holding it, so a reader may go to the document itself.
scholarly publication
Institutional witnessscholarly publication
Lucien Kroll, Maison Médicale, Modern Architecture Through Case Studies 1945 to 1990, 2012Crossref registry
Institutional witnessscholarly publication
Institutional witnessInstitutional database
Wikidata, structured authority record Q2439897: Lucien KrollWikimedia Foundation
Institutional witnessreference work
Secondary witness
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
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