my family's house was built and then we bought it. there's been no other owners. there were other people living in the house my nonna lives in right now, but my nonno and my uncles and his friends built a lot of additions onto the house back in like the 70s i think, totally changed everything about it, basically. dunno about my dad's side.
as for history, on my mum's side, my nonni immigrated here from poor villages in Friuli, Italy, in the 50s. my nonno was a bricklayer. they lived in a small house in an Italian area of downtown Toronto for years before moving to North York, where the house i described above is, and which is now part of post-amalgamation Toronto. They had 7 kids. one of them passed away in childhood. one of them, my godfather, is a medical doctor now.
Back in Italy, their families eventually began to do quite well for themselves. I'm not entirely sure what my nonno's side do, but i think one of them is a bank manager. On my nonna's side, her village formed a cooperative (Cooperativa) to produce and sell grape plants for growing wine, and it's quite a lucrative business.
i know a lot less about my dad's side. my grandpa is of Iriish descent, and his family had been here for several generations already. He remembers when Scarborough was basically all farmland, and worked as a coal miner up near Collingwood. He and my grandma had a lucrative business running a GM dealership i think, but that folded, and he started a much more cautious, less lucrative but more stable business doing... a bunch of stuff with trucks and buses? i think it's mostly retrofitting and... stuff. he was apparently quietly doing the environmentally friendly thing long before it was cool, or so i've heard from other people. my grandma is british. i know basically nothing about her family, but they haven't been here as long as my grandpa's side.
oh, and all sides of my family are Roman Catholic, to greater and lesser degrees. the grandparents (except for my nonno, who didn't like religion much) are all staunchly religious. their kids are all reasonably religious i think, to greater and lesser degrees. and the third generation, which includes me, vary from quietly agnostic (me), ambivalent about it (most, i think) and religious (one or two).