Mumbai is the financial capital of India and it attracts many migrants from various part of India because of its business opportunities. Extensive development has already taken place which contributed little availability of land recourses in the prime location of the city. Therefore, most of the builders are concentrating on vertical development rather than horizontal ones. This has led to concept of high rise developments. But these high rises are developed without taking into account the environmental degradation caused by them. One of the factors is shadow effect from high rises on its neighboring structures. This paper highlights probable effect of shadow on neighborhood structures from a proposed high rise building in Mumbai, India. Not much of difference was observed in terms of shadow effect after the development of proposed high rise. A solar or sunlight rating was developed for neighborhood structures in and around the proposed high rise. Finally this paper provides recommendations that must be considered in order to curb shadow effect from high rise buildings on neighborhood structures.