Housing estate areas usually have around 70% share of public space. Considerable amount of money is spent on 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 Modřany housing estate in Prague evaluating current non-building areas and proposing three model example transformations. Costs used in the survey were taken from the Catalog of Interventions in Housing Estates. Benefits presented in the survey are taken from a questionnaire determining residents' preferences. The goal is to find 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.