Polish property investor Echo Investment said on Monday that it had acquired a 34,000-m[sup]2[/sup] plot of land in central Warsaw from Polish investors BRJ Invest and BP Inwestycje for EUR17.7m. The land is currently undeveloped and Echo plans to build 50,000 m[sup]2[/sup] of lettable office and residential space. Work will commence in the second half of 2011.