Purpose - The purpose of this article is to develop a quantitative building accessibility assessment model for the construction industry. Design/methodology/approach - The building accessibility assessment criteria are incorporated in a hierarchy structure based on the relevant building regulations and British standards. The analytic hierarchy process (AHP) is employed to determine the priority of the accessibility criteria. A review of the application of AHP is included in the paper. Finally, a case scenario is used to illustrate the method. Findings - This paper provides a methodology to prioritize the building accessibility criteria and to indicate how well a building design meets accessibility requirements quantitatively. Practical limitations/implications - A model is advocated for use by accessibility consultants and building designers to establish a quantitative assessment for building accessibility. It can also be used in the development of accessibility assessment software. Originality/value - This paper presents a novel quantitative building accessibility assessment model.