i would think you would only need to tell them about your flat or part of house i live in a flat in a house at moment as this is indipendent from others in property they will only need your info you can state you share a house or its a flat as long as its ok for more than one to live in and not over crowding look at it this way if you lived in a block of flats you woudnt know every one and so you woudnt need to give there info