I recognize that building, I too found it interesting. From time to time in Paris one sees older buildings with that distinctive style of plasterwork on the exterior. There must be a name for it. It's near the top of Pere Lachaise on the North side. It appears to be a small apartment building. When I saw it in this thread, I was surprised because this isn't a neighborhood in Paris one often sees in K's reports.
I should mention that the great majority of my photos come from the 10th, 11th, 12th, 18th, 19th and 20th arrondissements because those are the closest to where I live. I also spend quite a bit of time in the 1st, 2nd and 3rd arrondissements.
What is generally missing from my photos is most of the left bank, 13th arrondissement excluded.
There is a lot of 'fake wood' in Père Lachaise, too, dating from the same period. Since that building was built as a day care centre for the children of Père Lachaise employees, it was probably normal to carry over the same style.
I cannot make out the name of the street which shows the metal stabilizers holding the brickwork in place. I know about these rods of steel as I have an old house which necessitates them...not the one I live in. I do think the church , which I suspect is Saint-Trinite` on Place d'Estienne d'Orves, looks very commanding in your photo Kerouac.