The International Sustainable Building Competition will be held at COP31 and will be open to participants from all countries, with the aim to promote energy-efficient, low-carbon, climate-resilient, and sustainable building practices, highlight best solutions, and support their global dissemination. Application Dates15 April 15 October 2026Announcement of WinnersCOP31 - Antalya*Winners will be awarded a certificate of honour. Competition Details and Applicationyesint.csb.gov.trTitle International Sustainable Building CompetitionType Competition Announcement (Built Projects & Masterplans)Website https://yesint.csb.gov.trOrganizers UNEP, GlobalABC and the Ministry of Environment, Urbanization and Climate Change of TürkiyeSubmission Deadline October 16, 2026 12:00 AMVenue TürkiyePrice Free