Building Age Estimation: A New Multi-Modal Benchmark Dataset and Community Challenge. - Nikolaos Dionelis; Nicolas Longépé; Alessandra Feliciotti; Mattia Marconcini; Devis Peressutti; Nika Oman Kadunc; JaeWan Park; Hagai Raja Sinulingga; Steve Andreas Immanuel; Ba Tran; Caroline Arnold (CoRR, 2025)