Construction and reforms of buildings and residential houses of free market and social character: multi-family, single-family and houses and flats; non-residential buildings: offices, schools, institutes, shops, supermarkets, hotels, residences, industrial buildings, leisure and restaurant venues; construction of roads, streets, urbanizations; construction of parks, gardens, walks; construction and repair of networks for fluids, electrical networks, pipelines, sanitation and lighting; deposits and water purification, libraries and social centers for young people and the elderly.