If you look at this address on Google-Maps
you will see only a plain corrugated metal building.
I found no signature but liked the effect of the patterns
as a background, the black and white realism of the boy, and
the cartoon-like blue birds.
I think that the café terrace just opposite on this narrow,
dead end street has a much nicer view thanks to this artist.
Rue de l'Élysée de Ménilmontant
(au coin de la rue Julien Lacroix)