Over the years, cities, due to various factors, undergo many transformations. This is not uncommon because of technological advances (e.g. inventions such as steam machine, car, etc.), then these urbanized spaces become more functional. In other cases, in turn, they cause their degradation (uncontrolled buildings at the expense of greenery). Today, modern cities are facing many challenges, including with climate change, the development of technical achievements. In Poland, the modern problem is the slowly noticeable urban deurbanization resulting, among others, from suburbanization, possible due to the development of communication connections, as well as resulting from the search for a better quality of life (reduction of air pollution, access to natural resources, etc.). One of the elements that can help cities in the process of restoring their attractiveness are green areas within multi-family housing. They constitute on average from a few to several percent of the total area of the city. This consideration applies in particular to green areas as part of downtown tenement houses, which according to the author constitute untapped potentia.