Deadline for expressions of interest in the Living Steel competition is 1 December this year.
According to the competition brief, solutions should be 'flexible, sustainable and cost-effective' and are sought for sites in Poland and India.
Winners will receive a prize of Eu50,000 (£34,000) and see their submission developed for construction in mid-2006.
The jury, approved by the UIA, consists of 2002 Pritzker Prize winner Glenn Murcutt; widely acclaimed housing architect Charles Correa; Andrew Ogorzalek, founding partner of UK-based PCKO Architects; past UIA president Jaime Lerner and James Berry, design director of Skanska.
Once all expressions of interest have been received, a shortlist of 10 practices will be drawn up for each of the two sites, with architects receiving the detailed competition brief by 13 January 2006.
Each shortlisted firm will be paid an honorarium of Eu10,000 (£7,000). For more information, go to www.livingsteel.org