Introduction -- Self-built houses (SBH) and city of Dhaka -- Spontaneous Transformation (ST), an integral phenomenon of SBH -- Structural analysis of ST in SBH in Dhaka: The explicit physical patterns -- Embedded explicit reasons behind ST -- Implicit Values behind ST -- Conclusion. This book describes and analyzes the phenomenon of spontaneous transformation in self-built houses in the context of developing countries. After describing briefly the history of self-built houses and the phenomenon of transformation around the world, it focuses on its context, the city of Dhaka. Firstly it describes the physical patterns of spontaneous transformation. Then it explains the explicit reasons behind those transformations. Finally, it carefully unveils the implicit values that are hidden behind those explicit reasons. The entire book is an ethnographic journey, which not only expresses unique stories of living with transformation, but also captivates the reader throughout with its compelling way of qualitative judgment.