“…Furthermore, there are several aspects to discuss about housing improvements such as: (1) Low building quality and slow construction evolution in the process of self-built houses (Kowaltowski, 1998;Bredenoord and Lindert, 2010;Abbot, 2002a;Abbot, 2002b;Ferguson and Smets, 2010;Shiferaw, 1998;Al-Naim and Mahmud, 2007;Kigochie, 2001;Sullivan and Ward, 2012;Tipple, 2004), (2) The ability and motivation of households to consolidate their housing situation for self-help settlements (Kellett and Granham, 1995;Ghafur, 2002;Gough and Kellett, 2001;Mukhija, 2001), (3) The symbiotic connection between house and economy, such as HBEs (Onyebueke, 2001;Sinai, 1998;Coen, Ross, et al, 2008). Laquian (1993) says that for the people who live in slum areas, the house is not just for home-life, but it is a place of production, marketing, entertainment, and financial institutions.…”