This is the 12259th most frequent Polish word.
mieszkalne
"Mieszkalne" means "residential" or "habitable."
In this sentence, 'mieszkalne' describes 'budynki' (buildings) as being used for residential purposes, indicating they are habitations or living quarters.
Budynki mieszkalne stanowią większość infrastruktury w tej okolicy.
Residential buildings constitute the majority of the infrastructure in this area.
Here, 'mieszkalnych' as a form of 'mieszkalne' is used to describe 'celów' (purposes) in a context indicating that these purposes are related to living or habitation.
Do celów mieszkalnych przygotowano osobną część domu.
For residential purposes, a separate part of the house was prepared.
In this context, 'mieszkalną' defines 'dzielnicę' (neighborhood) explicitly as being intended for residential use, emphasizing its function as a place for living quarters.