This document provides an introduction to residential building planning and town planning principles. It discusses key considerations for residential building planning such as site selection, building bylaws, orientation, and functional requirements. It also covers principles of town planning like zoning, land use planning, and strategies for low cost housing construction. The main points are that residential building planning requires considering the site, materials, and functional needs of residents, while town planning principles like zoning and land use organize an area's development and allocate space for various purposes in a way that promotes health, convenience and beauty.