I used to spend 3 years on the emerald isle, aka Ireland, of which 2 in Belfast. Most of Belfast is, since the end of the political unstability, undergoing renovation and a lot of estates, malls, buildings are brand new. However, the one area that needs to be renovated is East Belfast, particularly the part near the old shipyards and near the Glentoran FC soccer stadium. In the streets neighbouring that ground, I believe only 1 house of the entire area is still populated, the others are either empty or squats (and they look very dirty and risky, I wouldn't like to walk at night again in that area -- silly me did it once though and was glad as soon as I entered the populated world again)
The Belgian town of Doel was meant to be wiped off the map for port expansion. In the end protests and mistakes in the government documents mean the town is still there but 80% of people left the town due to the insecure future... Those houses are now all populated by foreign, mainly Eastern European, squatters. They outnumber the few remaining Doel locals.
Opposite of where I work is a squat as well, although it oddly enough has electricity. No windows or proper door though. I think about 10 people live in there, nobody takes action against it.
As unclean and insecure as it may look, the world of squatting somehow fascinates me. Maybe it's because of my musical preferences. One of my favourite bands used to spend a year in a squat when they had no money and were waiting for a proper chance to release a record. In the end they spent a year in a room in a squat with no running water until they finally were offered a record deal and income allowing a normal form of housing. It somehow intriguates me how people deal with the insecurity and discomfort of a squat and nonetheless somehow make the most of it ... I don't think I'll try it myself though, but it does somewhat interest me.
And not all squats are dirty ...