This study demonstrates a simulation experiment results regarding a flexible approach to solving facilities layout problem on a regular grid. In this paper approach we model objects with different dimensions and various shapes. We have implemented our version of the simulated annealing algorithm (Kirkpatrick et al., 1983) and analyzed how the number of cycles (100, 200, 300), objects types (uniform, diverse) affect average goal function values, mean concentration degrees, and the number of disintegrated objects. The formal statistical analysis was conducted separately for two sizes of regular grids, i.e. 66 and 1010. The outcomes generally showed a significant influence of the studied effects on the analyzed dependent variables.