Housing estate areas usually have around a 70% share of public space. A considerable amount of money is spent on the maintenance of these non-building areas. When maintenance efforts decrease, technical and visual aspects of the living environment also decrease. This paper presents a survey conducted in the Modřany housing estate in Prague evaluating current non-building areas and proposing three examples of model transformations. The costs used in the survey were taken from the Catalogue of Interventions in Housing Estates. Benefits presented in the survey are taken from a questionnaire determining residents’ preferences. The goal is to find the correct valuation of the money spent on development and management of public areas of housing estates and show it can bring great benefits for residents.