The aim of the study is to estimate the impact of the direction of window exposure on the unit price of an apartment using econometric methods. The data from the secondary market concerning transactions involving dwellings in G-15 buildings constructed using prefabricated technology in the 1960-70s were used. The study was conducted on data from 2015-2024 from 58 similar buildings located in Szczecin (Poland), where the exposure of the windows of the apartments was to the east or west. The results of the study are intended to capture certain regularities that will give insight into how the exposure of the apartment's windows to a given direction of the world influenced prices. The survey can help determine whether, given a choice between east-facing or west-facing windows of an apartment, one side of the world is better perceived by real estate market participants. The research hypothesis that east-facing windows increase the unit price of apartments is verified based on the observation of the secondary market for two-room apartments in buildings with exposure to two sides of the world (east and west). Differences between east and west exposure were tested. The research doesn’t confirm that eastern exposure is associated with higher dwelling prices.