21 INVENTORIES

EUR 1,000 31 Dec 2013 31 Dec 2012
Materials and supplies 38,304 46,099
Building plots and real estate 126,362 159,949
Housing under construction 171,350 90,645
Commercial property under construction 11,072 46,780
Other work in progress 33,496 21,387
Advance payments 13,985 5,170
Completed apartments 55,393 81,276
Completed commercial property 21,588 6,075
Products and goods 32,834 37,005
504,385 494,388



Collateral notes for uncompleted properties included in inventories are used as collateral security for the debts of companies included in inventories to the value of EUR 119.3 million (EUR 73.1 mill.).

In 2013, the company recognised inventory impairment losses of EUR 19.3 million, of which EUR 14.7 million was related to the company’s Building Construction segment’s commercial buildings. The impairments of commercial buildings in the inventory are a result of the slowdown in commercial markets outside the Helsinki metropolitan area.