The article summarizes research on the impact of selected characteristics of new apartments on the timing of their sale. The analysis covered properties built between 2014 and 2022 by a single developer in Szczecin. The study was based on data on a housing estate with consistent development, divided into four construction stages. Duration analysis and hedonic regression methods were used. Key findings of the study are as follows: window exposure: apartments with south- or west-facing windows sold faster; view from the window: a positive view (e.g., of green areas) accelerated sales, while a negative view (e.g., a railroad embankment) delayed them; location: apartments on the top floors sold faster; construction stage: the fastest sales took place in Stage 2, and the slowest in Stage 1, which was explained by the unattractive surroundings of the construction site; number of rooms: the fastest sales were two-room apartments, which were more affordable and attractive for investment. The survey indicates that the key factors for buyers are the comfort of the apartments, the view from the window, sunshine and the orderliness of the development's surroundings. The results provide valuable guidance to developers and designers, making it easier to tailor new developments to customer preferences.