What I am saying is that there was a blacksmith shop there and the foundations could be stables or really any sort of outbuilding, such as livestock holding pens. Here's a quote that I found.
"Historian Brian Cuthbertson offers a reasonable alternate explanation for the foundations and presence of iron tools. Cuthbertson, in "Voyages to North America Before John Cabot: Separating Fact from Fiction," asserts that the Harris property was once the site of a blacksmith shop, which handily explains both the stone ruins and the iron implements found there (1944: 136). In the spring of 1817, a letter from Charles Morris, Surveyor General of Nova Scotia, requested that Lieutenant Ross find a suitable location for Daniel McKay, blacksmith (Cuthbertson 1994: 143). The 1860 survey map by John Lawson shows a property allotted to a Daniel McKay, one property up from the cross roads, in approximately the same location as the present day property (Lawson 1860). The presence of blacksmithing at the site could also offer an explanation for the charcoal/ash pit found by both the Harris and Keddy/Dickie excavations (Hope 1997:80 and Finnan 1999:15)."
In addition you assert that the Templars lived in this settlement for many years. They would have had to be provisioned. Here's a link to a NS government page that explains the difficulty that Captain Ross and his settlers had in New Ross. Even with government support very few of the original inhabitants stayed because of the extreme conditions. But yet we are to believe that in 1408 this settlement would thrive.
https://museum.novascotia.ca/resources/nova-scotia-and-war-1812/new-ross