I was curious to find out what is currently the most expensive house in the world. Turns out, you would only need to buy a house for more than 70million pounds to be the owner of the most expensive house in the world. That’s not too bad, aye? Pocket change as far as I’m concerned. However, i’ve checked through various sources and apparently 2 houses in the UK sold for a rumoured 70million pounds, so I guess there are 2 houses that can be considered the most expensive house in the world.