Assessing the Impact of Post-Occupancy Modifications on Energy Efficiency on Low-Income Housing Estates

Abstract

This study examines the impact of post-occupancy modifications on energy efficiency in low-income housing estates in Nigeria. Using data collected from 100 households, the research explores key demographic factors, types of modifications undertaken, motivations for these changes, and their subsequent effects on energy usage and satisfaction levels. The findings reveal that households primarily engage in modifications aimed at improving energy efficiency, such as installing energy-efficient appliances, enhancing insulation, and replacing windows and doors. Motivations for these changes include reducing energy costs, enhancing comfort, and addressing space constraints. The analysis shows a significant reduction in energy consumption after modifications, with most households reporting monthly energy cost savings of 20% to 40%. These savings are most pronounced in households that adopted solar panels or upgraded to energy-efficient appliances. Despite the financial and energy-saving benefits, satisfaction with energy efficiency varied among respondents, influenced by factors such as modification type and income level.  This study highlights the critical role of post-occupancy modifications in promoting energy efficiency and reducing energy costs for low-income households. It underscores the need for policy incentives to support energy-efficient upgrades, educational programs to raise awareness, and the integration of energy-efficient designs in future housing projects. By addressing these areas, stakeholders can enhance the quality of life for residents while promoting sustainable energy use. The research contributes to the growing body of literature on sustainable housing and energy efficiency in developing countries.