The ongoing expansion of mass transit system in Bangkok and surrounding provinces is one of the metropolitan’s essential moves towards urbanization that promote massive development and provide linkage between urban and suburban zones. The extensive infrastructure has resulted in major changes in a number of neighborhoods even before the construction was actually set off. While the high potential of the locations attracts new investments, commercial and financial values of the land along transit routes multiply. Multi-dimensional transformations of neighborhoods in the proximity of mass transit stations have become more obvious as the projects continue. Among critical issues is the existence of small and medium-scale communities that are subject to welcome the constructions of not only local stations of elevated or underground railway, but also emerging projects and much wider groups of populations unfamiliar to the old community. Changes can be easily predicted in the near and far future; however, with traditional values, sensitive qualities and elements of original urban forms, it is questionable what and how much positive and negative impacts urban growth and interventions will cause to the existing contexts.