Yeah just wondering because I am working at a house with 3 floors and a basement. The basement is half used and half it is blocked up with only 1 small hatch to get into it. The part that isnt used is also broken up into 2 and you would never know the other part existed because the entrace could be easily hidden. I only found it because I was relocating pipes down there. I just thought at the time it must be one of the best places to grow because the walls are very thick there is absolutely no reason to go down there, even if someone got into the hatch it would be so easy to cover up the opening to the secret part. It is about 8 foot long 5 wide and atleast 5 foot high.

It is just perfect I really want the house lol. I mentioned it to my mate on the job who had been down there he had the same idea lol.