Large-scale regeneration projects tend to attract a great deal of attention from the point of view of public policy. Most of the projects are expected to have significant neighbourhood effects in terms of physical and social changes in the surrounding areas. Naturally, planning documents tend to set fairly ambitious objectives to deliver positive change not only on the project site but also in surrounding areas. However, previous studies on neighbourhood effects have shown that such objectives on social changes are often unmet. This dissertation aims to fill some of this gap through examining both the physical and social changes using systematic data analysis, with a case study of the King’s Cross Central (KXC) project. The study is based on an analysis of the new planning application data sources over the period 2004-2015, and we aim to provide new insights to enrich the understanding of neighbourhood effects.