From Traditional to Postmodern: Architectural Evolution and Implications for Cultural Preservation on Tha Phae Road, Chiang Mai, Thailand

This study examines the architectural heritage of Tha Phae Road in Chiang Mai, Thailand, which reflects the city’s cultural and economic development. The preservation of its historic character and cultural significance is of utmost importance as rapid urbanization and development threaten its potential loss. Using Grounded Theory, the study analyzes non-numerical data, including photographs and site investigations, to identify the area’s four main architectural styles: Modern, Postmodern, Traditional, and Traditional-Colonial, with Modern being the most prevalent. The Compound Annual Growth Rate (CAGR) is used to examine the distribution of styles over an 11-year period, revealing a decline in Traditional and Modern styles and a positive growth rate of Postmodern architecture. To preserve and enhance the area’s visual quality while allowing for new development, the study proposes a Façade Control Guideline and zoning regulations. These guidelines consider criteria such as the history and importance of Tha Phae Road, ensuring that any changes made to the area respect the overall scale and character of the street. This study’s findings have important implications for the development and preservation of Tha Phae Road’s identity and highlight the value of preserving the cultural heritage and visual quality of the area.