Those make me wonder how many ugly buildings were renovated like that, and how many still hide interesting details. The ones with new masonry walls don't seem likely to have their old facades, but often siding can just be taken off.
There's a similar example in Halifax. Look closely at the front facade and the side wall of the fourth house on the left side; it has a plain 50's-era brick front, but the side is clearly Victorian-era brick with a mansard roof.
This one's got metal siding:
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