Street art allows neighborhoods to be more attractive and more dynamic. It attracts curious people and artists if the designs are done well. If they are poorly designed, the neighborhood can get a bad rap.
Some artists are well known for their street art, like Banksy. The districts which benefit from his art receive tourists from all over the world.
Tourists buy things in the neighborhoods, which makes them richer. Well-done drawings make the neighborhood known in the city / region / country ... So yes, street art can revitalize a neighborhood.
