In today's episode of "this social housing project in Paris looks better than most market-rate housing elsewhere," we're looking at a recently completed boarding house in the 17e by CQFD Architecture.
The project has 6 storeys, a total area of 690 m2, 19 units, and a hard cost budget that was approximately €2.6 million (excluding tax). At this number, their hard costs work out to ~€3,768 per m2, ~€350 per ft2, or ~C$563 per ft2. So this was not a cheap build. Here's what it looks like:

When I first saw the project, I thought the total area would be larger than it is. At 690 m2, it's basically the size of a multiplex project here in Toronto. Except here in Paris, they've gone vertical and they've managed to fit 19 studio apartments, plus amenity space.
All of this is possible when you consider the efficiency of each floor plate. The typical floor includes 4 apartments, one stair, one elevator, and a short corridor. Add in a second exit stair and all of this blows up.

Also interesting is the efficiency of the ground floor. There's an entrance hall, management office, bike room, recreation room, outdoor garden, and a teeny tiny garbage room ("local O.M." on the plan). As I understand it, this is all that's required for refuse because of how frequently it's picked up.
If this were in Toronto, we'd probably need a dozen bins, meaning that the bike room and/or recreation room would need to shrink down.

I love dissecting plans and dimensions from different cities because it shows you the invisible hand of building codes, planning policies, and cultural norms. We get accustomed to certain conventions and then we assume that it's simply the way that things must be done.
But the rules we have are simply the rules that somebody decided to create. As Steve Jobs once said, "Everything around you that you call life was made up by people that were no smarter than you." This implies that everything can be questioned and ultimately changed when there's a better solution.
Photos from CQFD Architecture
Floor plans from Metalocus

