Are two owner duplexes common?
I have been watching Holmes on Homes. I know his reputation. He seems about the same a Bob Villa in the states. Decades before was a decent contractor now is a TV personality.
But anyway there seem to be several episodes where people own 1/2 a house and some random person owns the other half. In the States I have never heard of anyone owning 1/2 a duplex. One person owns it and they rent half and live in half or they rent out both halves.