Global economic expansion and increasing concentration of people in the large cities, especially in developing countries leads to some environmental issues such as air pollution. Relocation of the firms as a great air pollutant can be an appropriate alternative for diminishing these pollutions. Yet, there is a lack of research about factors precluding firm relocation with respect to decision making factors when determining whether or not to relocate. Thus, the purpose of this case study is to examine firm relocation decision-making factors and to apprehend the role of environment issues in making them using a combination of SWOT matrix and Analytic Hierarchy Process (AHP). The combination yields analytically determined priority factors and makes them commensurable. The results indicated that decision makers at this firm consider weaknesses, more importantly than strengths, opportunities and threats. Specifically, eradicating from a large market is the most significant factor for decision makers and notably diminishing air pollution as a governmental concern ranked third. (C) 2013 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.