Abstract
The aim of this article is to analyze urban decline considering emergence and agglomeration of vacant buildings and effect of empty space on commerce using a multi agent system for urban simulation. The system contains twenty by twenty cells representing land use lots where agents are located. The agents consist of empty space, industry, housing and commerce. These agents appear or disappear according to the potential or request value as the accumulation of spatial interaction and rent. Conversion costs, decrease of population and high rent at business districts are implemented. The results show that vacant buildings appear at surrounding area and that the effect of agglomerated vacant buildings accelerates urban decline. Combination of empty space and commerce causes sprawl decline.
