Within a period of a decade, Baan Mankong Programme (BMP) has been a critical topic of discourse as for urban poor housing scenario in Thailand. This paper unveils the contribution of Income Generation Space (IGS) on the BMP, tools to get IGS, clarifies the categorization of IGS in the BMP as well as pinpoints the imperative factors which help for the IGS enhancement strategy. IGS houses are clarified and made categorizations to unveil the contribution of IGS and trends of spatial utilization of a practical urban poor housing case, Tawanmai community in Khon Kaen, Thailand. The imperative factors for IGS enhancement strategy consist of chronological change, dwellers keenness, dwellers occupation, gender implication, household maneuver system, dwellers education level, as well as transportation issue.