The Cost and Affordability Paradox of Transit-Oriented Development: A Comparison of Housing and Transportation Costs Across Transit-Oriented Development,Hybrid and Transit-Adjacent Development Station Typologies

Abstract

This study presents a comparison of housing and transportation costs (H+T) in 4,399 fixed-route transit station areas across the United States. Each station area is classified as a transit-oriented development (TOD), hybrid, or transit-adjacent development (TAD) based on walkability and housing density targets. Station areas with a Walk Score of 70 or greater and a gross housing density of 8 units per acre or more are classified as TOD. Station areas that meet just one of these criteria are classified as hybrids, and those that do not meet either of these criteria are categorized as TAD. The findings reveal a paradox that whereas TOD are more expensive places to buy and rent housing, they are more affordable than hybrids and TAD because the lower cost of transportation offsets housing costs. We argue that policies to increase the density and walkability of hybrid and TAD station areas, which account for two thirds of all station areas across the United States, should be a top priority for both housing and transportation officials.     

Urban sustainability and the emergence of new （old） concepts： Analysis of the sustainable communities concept through the component of transportation

In this paper, I propose to analyze the sustainable communities concept through the perspective of transportation and connectivity. Sustainable communities concept gives more importance to the social dimension that is the centre of the concern, and spatially to the neighbourhood and the complex structure of interactions, activities, fluxes that characterize the urban environment. To understand the concept, I will focus on the principles that underline this concept including the seven components that were defined by Egan （2004）. There will be an approach through the evolution of transportation in cities, a contextualization of the present problems associated with this topic, the explanation of the differences between sustainable transportation and ＂common＂ transportation. The relation between land use patterns and transportation will also be addressed on how sustainable transportation can promote the sense of community in a place. In the final remarks, there will be some proposed measures associated with the concept of sustainable communities.