Significant transformation processes have been taking place on rural areas, especially those close to big cities. Some communes, which are still described as rural ones, can be a part of functional metropolitan regions. The aim of the study was to verify if such a situation takes place in the case of the Warsaw Metropolitan Area. The study showed that there are some rural communes, according to the DEGURBA methodology, included in the Warsaw Metropolitan Area; some of them also joined a mechanism of the Warsaw Integrated Territorial Investment. Participation in this mechanism will allow them to develop their potential in a way coherent with the development path of the whole Warsaw metropolitan region.