Did you report it? I would. Sounds out of the ordinary if there is generally no activity at that house.
Contemplating how best to do it, been trying to get plate numbers but from the basement not easy
BTW my SIL told me they just moved in recently and it still seems virtually abandoned, the women seem non-existent and the only activity is Sundays with a car, one car/one caravan are parked in driveway occasionally. When the white guy looking muslim drops them off he only goes to the door and I have yet to see any other male or the women driving either vehicle