Housing has an essential role in the economic development of the country. The need for housing is not only a basic human need but also an indication of the standard of living of the population. Thus, some of the factors that have led to the increasing population in Machakos County are due to rural to urban migration and congestion in cities.

In the recent past, NEMA has shut down a number of abattoirs around the country. This is mainly as a result of non-compliance with Environment Management and Co-ordination act (1999). The most recent case was in 30 January 2022 when NEMA ordered for the permanent closure of all 15 slaughterhouses in Kiamaiko. The authority wanted them to relocate to the newly built multimillion shilling slaughterhouse in Lucky Summer, Njiru. This was mainly because the slaughterhouses at Kiamaiko were polluting the Nairobi River and the authority wanted to put this to a halt.

The problem in the study is that climate change is of concern to all humans, all over the world. Climate change is directly linked to release of greenhouse gasses (CO2). Kenya is a developing country which relies mostly on green energy, thus most of the emissions that occur are due to development of the majorly rural areas into urban centres. This development necessitates the use of concrete, as it is cheap, readily available, and easy to work with. However, it has a huge impact on the environment because of the release of greenhouse gasses and exploitation of our natural resources.