Fill the frame and all that... what got me was the length of the shadows from the roof vents (and then I was thinking how I could play with it using Silver Efex).
This is an interesting take, @Gary R. Smith. Light does the work that only light can do. The framing is harmonious. The squadron of the roof vents is a significant presence, I can't tell now what it reminds me of, but it is something.
Thanks Gianluca! What prompted the shot was the fact that the angle of the sun matched the angle of the roof and the roof vent shadows went from the vent all the way down to the gutter.