Understanding the rise and fall of streets necessitates an in-depth comprehension
of culture and economy, which are the key factors shaping and developing a
street’s identity. The purpose of this research is to investigate the cultural-economic
aspects of the historic Lalehzar Street in the metropolis of Tehran and to present
an architectural model to prevent the increasing erosion of the rich heritage of this
street and its increasing stagnation during certain hours of the night through an
architectural model based on the Culture-Economic Factor (CEF) which is carried
out through the Adaptive Reuse (AR) strategy. Data collection involved qualitative
methods, starting with face-to-face questionnaires distributed to 120 local business
owners, complemented by in-depth observations from three case studies. The
questionnaire responses were analyzed using descriptive statistics and frequency
analysis, while the observational data were compared to Jane Jacobs’ diversity
theory. Results indicate that 1) cinema-store, theater-store, and cafe-store models can
significantly alleviate the nighttime street stagnation by attracting crowds from 8:00
PM to 12:00 AM. 2) The Argo Building demonstrates this success, drawing 160 to 180
visitors at all hours, benefiting local businesses through mixed-use combinations.
This pattern was acknowledged by Laleh-Zar’s businessmen. This study proposes
an innovative architectural model based on diversity theory and AR strategies to
combat urban stagnation without previous examples, offering a unique method
for integrating cultural and economic functions. It serves as a valuable resource for
architects and urban planners, and can aid municipalities in urban regeneration,
especially in historic areas like the centre of Tehran.