This year seems an “easy” one, at least regarding architects’ signatures.
Among the architects we find A. Courtens. He built several art-déco houses in Brussels. He also designed one of the earliest art-déco buildings in Québec, namely the “Centre commercial du Domaine-de-l’Estérel” .
Another interesting signature is the one that reads “EDITHBERGA RD 1931”. I was intrigued by this name. Crawling through the net I found that in the Dutch city of Maastricht there is a house with a plaque reading “EDITHBERGA ANNO 1916”. Here is the link. In fact the website containing the picture of the latter plaque includes a whole inventory of plaques and decorative elements in façades in Maastricht.
Readers will also notice that two pictures include the names of the “entrepreneurs” (the construction contractors) who built the houses.
I also want to draw the reader’s attention to the fact that one of the architects featured in this post, G. KNIPPERBERG, also appears in my post on 1911
Finally we have pictures from two “guest” cities: Ottawa (the picture showing the year of reconstruction of St. Joseph’s church) and León in Spain (the pictures shows a façade with in the pinnacle the name of a printing company and the year 1931 in Roman numerals)
Brussels in years, years in Brussels 
