**1. Introduction**

Present housing design faces various environmental issues, including climate change. In 2014, the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) said, "without additional efforts to reduce greenhouse gas emissions beyond those in place today, global warming in 2100 ranges from 3.7°C to 4.8°C above the average for 1850-1900" [1]. The Paris Agreement of 2015 has aimed to limit global warming to well below 2°C, preferably to 1.5°C, compared to pre-industrial levels [2]. In order to curb global warming, the building sector must reduce CO2 emissions drastically [3]. Meanwhile, no matter whether the Paris Agreement is fulfilled or not, the global mean temperature will inevitably rise from the present level. Accordingly, today's housing also needs to prepare for more severe extreme weather events caused by climate change [1].

On the other hand, changing social and economic situations also urge housing design to be altered. For example, aging population, which is remarkably progressing in this century [4], increases the proportion of people with disabilities in the population and households [5]. Thus, houses should adopt fundamental accessible and universal design features [5, 6]. Meanwhile, along with the development of information technology and network, the number of people who work at home or from home has been increasing [7, 8]. Currently, homes need to be recognized as significant places for working and economic activities [9].

Dealing with environmental, social, and economic issues and pursuing sustainability is a target-oriented challenge. The science of system control can be used for all target-oriented tasks [10]. Besides, that science has brought fruitful results in many fields, including engineering [10]. Therefore, applying system control, we have been progressing in research on sustainable design.

Our finished study results include the "control system for promoting sustainable housing design" and the "process of producing and revising the sustainable design guidelines." Utilizing these methods, we have already developed and revised sustainable housing design guidelines, mainly for use in Japan. Based on these accomplished results, this chapter shows how to design sustainable homes. First, the next section briefly illustrates the methods. After that, the main section demonstrates a concrete process of creating sustainable housing design guidelines.
