I remember only seeing a couple posts wanting this, do most not care for this, or think it's a bad idea? if so, I'll move along. If not, I think it'd be a good idea. There is a 'below' layer under Sosaria, been there, Old Magincia, yew, Buc's Den, New Haven even has a fishing area in theirs. I think it'd have to be directly under houses for coding and practicality I might like to rent mine out, make a Bed & Breakfast or something, or sell, or lease it, so it might need a separate title. Since we aren't gonna get a second house, I'd settle for a basement I bought or leased from someone. Similar to a house under a house. Maybe later they could make catacombs out of the space left with entrances here and there.