Comment Re:Doesn't need a whole building (Score 1) 71
If anything, a building still otherwise in use would be superior, more noise to hide the power draw in.
The BBC's version of the article stated abandoned buildings.
But sure. Find a room not being used at the end of some hall. Create some means of covert entry into the space from outside like a new hatch cut behind a bush, or whatever. Quietly frame up new walls inside the building during some holiday while everyone is gone and nobody's looking.. Fresh coat of paint to match surroundings, coat rack, or old spare fridge stuck in its place, so the hallway is just blocked or obscured and ends early. Space likely to be forgotten and available for nefarious uses forever, then.