In regard to greening, the solutions consist of an analysis and selection of indigenous and sustainable plant species, the application of appropriate green wall system on exterior facades with a total area of 400 m2, creation of a 300 m2 sustainable green roof through a novel system of pots or containers of simple integration on roofs, the implementation of sustainable and efficient green surfaces on sidewalks and common areas of buildings. The other green surfaces consist of deployment of 100 m2 green parklets in combination with 240 m2 of water permeable surfaces and bioswales. Rainwater collection, filtration and reuse will be based on creating 700 m2 rain gardens integration of the previously mentioned 240 m2 water permeable cover on sidewalks and bioswales that divide the road and the sidewalk. The rain gardens will become green oases in the otherwise stony area in order to relieve the sewerage system in this densely built-up area.