Affordable housing is defined as housing which meets adequate quality requirements, is not located too far from workplaces and schools and the price is not too high that households would not be able to fulfil other basic needs. In essence, the quality, build-up and location is as important as the financial affordability of a house. McKinsey Global Institute, in its 2014 report titled Tackling the World’s Affordable Housing Challenge, predicted that by 2025 as many 1.6 billion people worldwide would face problems securing affordable homes (Dobbs et al., 2014). They estimated that 330 million urban households globally live in substandard housing or are financially stretched by housing costs. Some 200 million households in the developing world live in slums; in the United States, the European Union, Japan, and Australia, more than 60 million households are financially stretched by housing costs.

An affordable housing was one of the main deliverables in the development of low-income and middle-income housing structure.  The  Malaysian government has a Plan  to increase the quality of affordable housing with a slightly increase in cost of construction. The government of Malaysia aims to resolve this issue by initiating various affordable housing program and presents the Industrialized Building System which is  the best solution in terms of building method and technology in order to build a large number of affordable housing at the quality and cost. The United Nations Universal Declaration of Human Rights recognize that access to decent, affordable housing is fundamental to the health and wellbeing of people. An affordable housing  may defined as housing that meets adequate quality and requirements which is not located too far away from workplaces and the price is not too high that households would not be able to fulfil other basic needs.