During the past few years, there have been tremendous changes on customer preferences on the architectures and design perspectives. There are many cases where there are big differences between what originally a plan is designed for and what it comes in final stage. Obviously, this may create significant amount of rework, waste and it can increase the cost of building a house, significantly. This paper presents an empirical investigation on factors influencing change in architecture of buildings. The proposed study designs a questionnaire in Likert scale and distributes it among some experts at difference universities in Iran. The study categorizes different factors in terms of “factors reducing change in clients’ request”, “methods on predicting clients’ request”, “methods on presenting plans for clients”, “Effective parameters on change in plan” and finally “Important actions on change prevention”. Using experts’ insight, the study ranks various factors in each category.