The growth of the population worldwide has been increasing rapidly in this current century. Due to this, migration of rural population to the urban has been increasing as well. When urbanization takes place, all the centre of attraction, be it economy wise, entertainment wise or any other aspect, it is all centred in the urbanised area. Thus, the rural residents will start to move to the urbanized area in order to live a better life. According to Lamba and Solanki (1992) there are certain push and pull factors that oblige people to leave rural areas for the cities and towns. For instance, better job opportunities, access to better facilities in the urbanized area are among the pull factors. Whereas, for the push factor, it would be the less salary they get for the job in rural areas, or poor family condition which forces a person to leave the village to enhance their life and many more. This shows that the rural area residents see much opportunity mfor them, especially employment wise in the urbanized area. Migration of them to the cities has made the city to be over crowded and settlement problems start to arise. Though urbanization provides a lot of benefit to the public, it has its cons too.
When the cities and towns were crowded with people from the urban area, they had difficulties in resettling these people. Willis and Tipple (1991) found that the major challenge being faced in this decade in the urban areas is housing the poor, as the population is projected to keep growing in the urbanised area. Incoming of the rural residents to the cities were not stopped as they provided labour force in the urban area. At this stage, the urbanised area will face scarce of formal housing and at the same time it would be expensive for the rural migrants too. According to Willis and Tipple (1991) as this was the case, the rural migrants begun to built houses in squatter settlements on unused lands.
