The second largest sector is the Construction industry, forming around 18% of the total GDP sector. The development of the number of construction businesses in the Riau Islands fluctuated considerably during the period 2008–2010. In 2010 the number of construction companies in the province was 1,570, with the value of construction completed (revenue) of Rp 5,483 billion. Number of National Labor Force Survey Results show that the number of residents working in the construction sector has fluctuated from time to time. As many as 43,232 people were recorded in February 2009, then decreased in February 2010 to 29,932 people, again increased in August 2010 to 50,833 people, then decreased in February 2011 to 58,211 and again increased in August 2011 to 59,755 people. Because the Riau Islands is a new developing province and almost half of the existing human resources come from outside the Riau Islands, this has caused housing needs in the Riau Islands to be out of proportion to their availability. This condition also seems to have caused housing costs to rise in the Riau Islands relatively faster than in other regions. The results of the National Socio-Economic Survey show that on average the expenditure per capita of the population for rental costs/housing contracts is the highest type of expenditure for non-food commodities, and the figure tends to increase every year. This fact is in line with the increasing frequency of commodity rental prices in the Riau Islands.