Green structures play a crucial role in urban planning to promote both human well-being and ecological sustainability. This case study examines two fictional residential blocks to identify which nature-based solutions can be implemented to best deliver ecosystem services over time, while also being easy to maintain and manage. The study also investigates the role of a green area factor (GYF) requirement, and whether this requirement can realistically be met in the planning of residential areas and if it creates a balance between different types of ecosystem services. The study was conducted using a qualitative method in the form of semi-structured interviews with six professional respondents, an ecologist, a consultant, a planning architect, and three property managers, selected through subjective sampling. The results show that certain green structures, such as trees and meadows, are considered particularly beneficial from several perspectives. At the same time, the study shows that a GYF requirement serves as a guiding value in planning but does not automatically lead to a balanced or strategic distribution of ecosystem services. The conclusion is that local context, the right type of solution, and a holistic perspective on multifunctionality are crucial for the successful implementation of nature-based solutions in urban development.