The concept of the low-cost rental housing can be traced to a 1998 policy statement, but did not truly take off until 2006 due to limited funding and administrative problems. The provision of more affordable housing is one of the key components of China's Twelfth Five-year Plan, which targets the construction of 36 million homes by 2015. That program's costs will be split between the private and public sector and are estimated at five trillion yuan by China International Capital Corporation.