Abstract
The Register of Real Estate Prices and Values (RREPV) is among the sources of information used in the process of real estate value estimation. Pursuant to § 74 of the Regulation on the Land and Property Register, the register is kept by the head of the county. Currently there are 380 counties in Poland, including 66 city counties. Such a big number of administrative units within the country, combined with different information and communication system providers, results in a great diversity of software used for keeping RREPV nationwide. The purpose of the article is to present the spatial distribution of information and communication systems in which RREPV is kept. The article describes parameters that characterize the market share of specific programs existing on the market with regard to the number of implementations, estimated number of transactions entered in the system, the coverage area of the specific system and the population handled by the specific system.