Jerome,
I finally got a moment to return here and pay homage to the talent of this French Photographer, Matthieu Venot. As you point out his pictures have in common a use of pastel colors. To some extent, he seeks them out but I suspect he is bringing the diverse pictures to a common color palette in post-processing, akin to videographer's and film use of colorist software.
Most of the pictures shown have a cloudless and uniform, structureless sky, as if it had been printed with a single light blue-cyan ink. The two main elements he chooses are wall and roof shapes that have well defined and uncomplicated shapes of buildings or their parts mostly in off white hues. Generally, buildings are devoid of wires, visible fixtures, drain pipes, garbage cans, flower pots lying around and, as one might expect from the description so far, not a speck of trash anywhere, dog, cat or stay bird!
Likely as not, Matthieu simplified each shot, but that's my guess, as outside of Zurich, one General finds all sorts of trash or mats to walls and ground everywhere.
The effect one gets is that one is looking at something approaching a printed lithograph, where all blocks of color are uniform. In fact these photographs are one adjustment short of being prints from the atelier of
Gemini G.E.L. in Los Angeles.
Thanks for adding another photographer with both vision and style to follow!
Asher