Since the last decade, the Egyptian government has established several social housing projects to meet the growing demand for real estate and solve the housing problem nationwide (Saftawy 2019). Among these housing projects is the "Housing and Development Bank" project in New Damietta, which targets the middle and low-income social housing category. The existing residential units are currently fully finished and ready for use, and all electrical installations and internal and external lamps are almost uniform and pre-installed for all residential units. This study examines the performance of the design of external lighting and its health impact on some residents of residential units within it in the case of the study and also examines the performance of interior lighting design (new 2022). During the past years, the importance of hygienic design of buildings has emerged after the increasing phenomenon of sick building syndrome (Ashour 2014), which led to a decline in the productivity of users and affected their physical and mental performance. Because of the design of the buildings in which they work/reside. In the beginning the interest was It focuses on administrative and office buildings because the productivity of employees was translated directly into profits for employers, but later the importance of healthy design of residential buildings appeared, as the productivity of the employee is affected by the factors that affect the quality of his sleep and life in the hours spent at home also before arriving at work, hence the need for an approved evaluation standard that evaluates the performance of buildings in terms of health and its impact on the health, performance and psychology of users. The WELL Rating System, launched by IWBI (International WELL Building Institute) in 2017 (IWBI Delos Living LLC 2016), and the research measurement tool "WELL v2 Rating System", released in 2020, are released as the second version of WELL Building Standard TM. The research problem lies in the architects' disregard for the question of the effect of night outdoor lighting on the interior spaces of the rooms facing them when studying and designing residential projects (Bunjongjit and Ngaopitakkul 2018) social in the study area. The problem also came in the failure to evaluate the lighting design with the WELL classification system
INTERNATIONAL JOURNAL OF ARCHITECTURAL ENGINEERING AND URBAN RESEARCH PRINT