Not one main house and one "Hoouse next door" or other secret house, but two equal houses. It was successfully pulled off in Big Brother Australia in 2003. On day one the HMs were split between two house; The Round House and The Square House. On day 23 Big Brother removed the dividing walls creating one house.
We've seen planning permission documentation proving that the house is going to be completely renovated, and we haven't seen house pics just yet, so there's still hope that something this major could be happening.
I'd personally love to see it happen. Would you?
Below is the BBAU video for those of you who haven't seen it before.
If the video doesn't work, here is the link
https://www.youtube.com/watch?v=81-y...utu.be&t=6m30s