Found the perfect house for us BUT I think the next door neighbour(s) is a HMO property. There were multiple men standing outside chatting then they all went back inside, not sure if they were just visitors but it also has a large driveway with multiple cars. We have young children so the last thing I want is to be living next to a HMO. Other than knocking on their door is there any way I can find out for sure? Would be gutted if it is because the house is perfect.