squatters' rights

The house over the road has squatters in. It's been for let, but empty for a while, possibly months, maybe more. Not sure how long the squatters have been in. We noticed them last weekend. The police know they're there and apparently it's up to the owners of the building, who don't seem in much of a hurry to do anything. In lots of ways you can see their point. The house is completely empty, someone might as well make use of it. The new inhabitants seem to be just a couple of guys. I think now they know people know they're there, they're being less cautious about being seen in the house and walking around with the lights blazing. No-one seems very bothered and there's not much to be done. It all adds interest to the neighbourhood.