This document discusses methods for low-cost housing construction in India. It begins by outlining the need for affordable housing options given that housing is unaffordable for many low-income individuals. It then discusses several strategies for reducing construction costs, including using locally available materials, modular planning based on standard dimensions, rectangular house shapes for efficiency, reducing room sizes where possible, and considering basic requirements like strength, comfort, and fire safety. Specific low-cost materials discussed include concrete hollow blocks, bamboo-based technologies, and asbestos cement sheeting. Economic measures to control costs and advantages/disadvantages of prefabricated housing elements are also summarized.