Ocena wybranych baz danych prywatnych i publicznych wykorzystywanych do sporządzania w latach 2006-2012 raportów rynkowych dotyczących transakcji sprzedaży lokali mieszkalnych: na przykładzie Katowic

The growing importance of real estate in the economy has resulted in an increased demand for reliable market information. In response to this, public and private entities have been preparing a variety of analytical studies. In case of public entities, investors are provided with information through periodic market reports, and some private entities also make fragmentary information available to the public. The topic for this paper was inspired by the promising results of a pilot study conducted in 2011 which involved a critical assessment of all adopted system solutions concerning the organization of public registers recording sales transactions in the real estate market. Another inspiration came from the results of a 2009 study of the commercial real estate market which revealed incorrectness of the evaluation of its basic parameters. The aim of this study is to assess the completeness and methodology of data collection on residential real estate sales transactions by the Central Statistical Office of Poland (GUS), the National Bank of Poland (NBP), the Polish Banks Association (AMRON) and the local database of real estate appraisers (Baza RM). The detailed results of the study refer to the Katowice market. The paper presents supplemented and corrected results of the author's own research from 2009 and 2011 on the residential real estate market, which is the most frequently analyzed market by both public and private entities and is highly active, as well as relatively homogeneous and stable in terms of its operating conditions.