The process of real property valuation by usage of income approaches is significantly affected by capitalization rate. This article deals with problematic of the capitalization rate determination in the real estate segment of apartments in the Ostrava city. It primarily aims to calculate the level of gross capitalization rate according to different urban localities of Ostrava, for various sizes of apartments, as well depending on the type of apartment ownership. The analysis of the real estate market is an important part of the research. It is focused on the offer of apartments from the perspective of market apartments for sale and also of market apartments for rent. The analyzed and calculated spatial values distributions are consequently processed into cartographic outputs.