Indoor Air Quality (IAQ) is important to occupant health because it affects the health and comfort. Many health care providers are concerned with the role environmental exposures play in the development of respiratory disease. While most individuals understand that outdoor air quality is important to their health status, many are unaware of the detrimental effects of Indoor Air Pollution (IAP) can potentially have on them. According to the Environmental Protection Act (EPA), indoor levels of pollutants may be up to 100 times higher than outdoor pollutant levels and have been ranked among the top 5 environmental risks to the public. There has been a strong correlation between air quality and health, which is why it is crucial to obtain a complete environmental exposure history from occupants. The present study focuses based on the gap analysis using experimental data with the following parameters of Radon gas, CO, CO2, VOCs and particulates of PM 2.5 and PM 10. Specifically, address the effects of IAQ has on the respiratory system and other vital organs of the body. These parameters are common agents that may lead to hazardous impacts among individuals whose exposed. It is very imperative to avoid health effects on the occupants by providing proper design of buildings and using appropriate building materials in construction etc., is of major concern to have a look on conventional buildings to green buildings.