The man with the marble driveway

There is a very fancy barrel-chested man who lives just two houses down from us.  It's a big white house with an enormous intricate cast-iron balcony that wraps all around the upper half.  Also, it has a huge marble driveway, like nothing I've ever seen, and he stands outside watching it being polished every day.
He often talks to us as we pass by.  He says he also has a house in Vancouver (Canada), and another one in London--  and a son or daughter in each city to watch over these various places while he's away.  With a thick British accent he always calls out to Tyler "Yes, hello there, sir!  And how are you doing today?" and he waves to Violet who gives him, appropriately, the queen's wave.  The three of us keep hoping to be asked over for tea (which is what they do here).  We are curious to see the inside of this house that is surrounded on the outside by a moat of silver and black marble.