Component Building Components and Health-Promoting Facilities Influencing Decision-Making in Purchasing Detached Houses in Housing Projects in Bangkok Metropolitan Region

Abstract

This study aimed to investigate the applicability of incorporating elements from the WELL Building Standard v2 (2024) into the design of single-family houses in Thailand’s housing development projects, and to assess the potential impact on construction costs from the perspective of experts in residential wellness design. Data were collected through a questionnaire survey of five experts, covering 68 items across seven categories: air, water, light, thermal comfort, sound, mind, and community. Descriptive statistics, including mean and standard deviation, were used to analyze the level of interest in implementation, while the median was employed to assess the impact on construction costs.

The results revealed that the elements receiving the highest interest ratings included the provision and improvement of indoor air quality, installation of windows and shading devices, installation of heat-resistant roofs, and the implementation of security systems, with mean scores ranging from 4.8 to 5.0 and low standard deviations, reflecting high consensus among experts. Most elements were found to increase construction costs by 3–6 percent, which is considered acceptable in economic terms. In conclusion, integrating the WELL Building Standard v2 (2024) into single-family housing projects demonstrates strong potential to enhance residents' wellness and should be promoted as a guiding framework for future residential development in Thailand.