The Optihouse Project Aimed to Model, Design and Test Housing And/or Housing Refurbishments for Low-Income Populations That Optimize the Fulfilment of Health Protection Needs and Environmental Sustainability in the Context of Climate Change and Growing Energy Insecurity. Energy Use in Homes and for Residential Construction Accounts for Sizable Green House Gas (Ghg) Emissions and Risks Due to Climate Change. a Transdisciplinary Research Collaboration Between Cure With Various Development Practitioners, Urban Planners, Civil Engineers, Architects, Field Facilitators; the University College of London (Ucl) With Environmental Design, Engineering, Science, and Social Science Experts and Architects; and Lshtm With Public Health, Epidemiology Experts Was Undertaken. the Housing Investigated Was in the Resettlement Colony, Savda Ghevra, Located on the North West Edge of Delhi With Self-Built Incremental Housing of Varying Quality. in a Three Stage Methodology, Problems Were Identified, a Dwelling and Occupant Survey Was Undertaken and Indoor Environmental Quality Monitoring Was Initiated. Stakeholder Meetings, Focus Groups and Design Workshops Were Used for Simulation Modelling and Health Impact Modelling. Construction of 10 New Houses, 10 Roof Repairs and 10 Retrofits Was Supported by Participants and Stakeholders, Followed by Ieq Monitoring. the Research Estimated Energy Use, Assessed Health Impacts and Discussed Pathways for Implementation. the Project Had Positive Impacts on Perception of Housing, Construction Practices, Housing Materials and Economics for Better Indoor Air Quality. Following the Initial Building Phase, There Was an Increased Demand in New the Housing Design. There Was Also a Huge Impact on Knowledge Creation Through Capacity Building for Contractors, Field Staff and Households.

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