This document provides a comparative analysis of Petaling Street in Kuala Lumpur, Malaysia (Site A) and South of Market in San Francisco, USA (Site B). Both areas have similarities such as grid street patterns, multifunctional complexes, religious buildings, and public transportation access that create high intensities of social contact. They also have markets and vendors in narrow paths. Differences include Site B having a public park and various museums, while Site A lacks these amenities. Additionally, street conditions are better maintained in Site B than Site A. The analysis recommends Site A improve by adding a public park, history museum, and addressing hygiene and pedestrian access issues.