The purpose of this study is to measure and evaluate indoor air quality in small-scale apartment houses which are not included in construction standard of Clean-Healthy house in Korea. This study is measured the formaldehyde, acetaldehyde, benzene, toluene, ethylbenzene, xylene and styrene included in the indoor air quality guideline of Korea. As a result, high concentrations of formaldehyde and acetaldehyde were detected in some of the houses measured, and in particular, there were some homes that exceeded the guidelines of the World Health Organization by more than six times the guideline of acetaldehyde. Some of the measured houses were found to contain volatile organic compounds such as toluene, styrene, and xylene at a high concentration and exceeded the indoor air quality in Korea guidelines. Therefore, the construction standards of Clean-Healthy house should be applied not only to large-scale apartment of 1,000 or more, but also to single-family houses and small-scale apartment houses.