The Urban Land Institute (ULI) Europe has appointed Louis Lallouette, senior analyst at Greystar, as the new chair of the ULI Europe Young Leaders Group.
Lallouette (pictured) succeeds Ariana Maass, who has served as chair since 2024. He has been a ULI member since 2022 and has been a highly active contributor to the ULI UK Young Leaders committee for three years co-leading the mentorship programme, championing the PropTech Innovation Challenge, and serving as vice-chair before becoming chair of ULI UK Young Leaders.
At Greystar, Lallouette has worked in the UK investment team since 2022 and since January 2026, in EMEA capital raising. Prior to Greystar, he held international development roles at Adagio Aparthotels.
Simon Durkin, CEO of ULI Europe, said: “Louis is an outstanding appointment as chair of the ULI Europe Young Leaders Group. His energy, dedication and track record in our UK Young Leaders community make him ideally placed to build on the strong foundations Ariana has established. We are delighted to welcome him into this role at such an exciting moment for the group. I also want to express my sincere thanks to Ariana Maass for her exceptional leadership and commitment. She has been instrumental in growing the Young Leaders into the vibrant, pan-European community it is today, and we wish her every success in her next chapter.”
Maass added: “Leading the ULI Europe Young Leaders Group has been a tremendous honour and I am proud of what we have achieved together particularly through our leadership education initiative and the continued growth of our membership across the continent. Louis and I have worked closely together over the past years, building a strong bond between the national and international Young Leaders communities, and I could not be more proud and excited to hand over the baton into his hands.
“Together with Louis and the team, we have already laid the groundwork this year to transform the Young Leaders Retreat into the Young Leaders Lab, an initiative I look forward to seeing flourish in the years ahead. I also want to extend my heartfelt thanks to the ULI European executive committee, Lisette van Doorn, Simon Durkin, Anne Kavanagh, the Young Leaders executive committee and the ULI team for their vision and tireless support in investing in the Young Leaders and in the future of the real estate industry.”
Lallouette said: “Real estate is a lifelong journey, from high school to senior leadership, and Young Leaders sits right at the heart of it. Our mission is to bridge every transition along that path, connecting, inspiring and leading across Europe. Within the UK committee, I always say: ‘We don’t own the platform; we are just passengers. Let’s leave it better than we found it.’
“Thank you to Ariana Maass for her outstanding leadership and the foundation she has built at the European level – big shoes to fill, but the opportunity to extend it further is exciting. In a world where AI concentrates value and geopolitics fragments it, our collective intelligence has never mattered more.”


