Co-founder of 109 Architectes, Youssef Mallat was central to developing the firm’s project portfolio, reputation, and consultant network. He drives 109 Architectes’ growth in the Arab states, managing projects both locally and in the KSA and Dubai. Additionally, Youssef’s responsibilities run the spectrum of the firm’s activities, from design and development to client representation.

Youssef was Partner in Charge of several projects including Le Plan du Lion project, where he established a state of the art wood construction process in coordination with Swiss engineers and German suppliers. This chain of construction was introduced to Lebanon by 109 Architectes, and has since been adopted by several local firms.

Prior to founding 109 Architectes in 2002, Youssef was part of a private practice in Beirut. His work included design and project management of residential buildings, private residences, and offices.

From 1994 to 1996, he was an architect at Architecture Studio, Paris. Youssef contributed to the Jean Monet University in St. Etienne, France and the European Parliament in Strasburg. While at Architecture Studio, he gained experience in dealing with large-scale projects and prestigious multinational companies, which would prove essential at 109 Architectes.

Youssef holds a master's degree in Architecture from ALBA, Beirut (1993) an MBA from ESCP-EAP, Paris and Beirut (1999). He also attended two postgraduate programs at Harvard’s Graduate School of Design, titled Daylight Buildings and Master Planning: Moving Toward a Sustainable City.

Youssef Mallat
Founding Partner


1970: Baabda, Lebanon welcomes its newest resident

1993: The Académie libanaise des Beaux-Arts (ALBA) sends him off with a Masters Degree in Architecture

1994: Architecture Studio in Paris announces him as their newest team member

1999: École Supérieure des Affaires rewards him for two years of hard work with an MBA-ESCP

2002: 109 Architectes becomes a reality when he establishes the firm with Michel Georr and Ibrahim Berberi