Looks like a small house for a collection like that. Crazy idea, more money then you know what to do with
Judging from the look of the house, I'd say this is London (or at least some western eurpoean city) and thus not so big house still = big $. Since space is at a premium for parking, he engineered quite a clever solution to house 4 cars in the space for just 2.
Do they have ******* home owners associations in the UK like we have here? A lot of HOAs limit the # of cars you can park in the street... Around here (SoCal) if you want to live in a nice area and not on the outskirts/sticks you get small home plus a HOA to deal with.