House building activities of the informal sector constitutes the acquisition, consolidation and use of building materials and labor that may contravene existing standards, but affords them a coping mechanism to a dynamic urban environment. Studies show that the informal housing sector is largely responsible for most of the housing stock catering for the low-income families. / The research aims at understanding the house building activities of the informal sector and is limited to identifying and describing the building materials and building methods employed, together with its underlying networks. / The case study in the informal community of Sitio Pugad Lawin, Las Pinas City, Philippines, found that, the houses were built by its owners with friends and relatives or by small contractors. They used simple timber framing methods, and combinations of indigenous, conventional and non-conventional building materials for the housing elements.

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