This small house (below) was demolished on Verdun street in Verdun, near De L'Eglise. The Volkswagen building next to it (post here) was demolished and it seems the house was included in the process. As in the two bottom photos show, the foundation is made of stone which means the small house was an old structure. To give you an idea how old it might be, the duplex I live in was built in 1929 and the foundation is made of cement.
(image above: google streetview)