Hi Blockaholics If you want to see a leak of one of the Block Rooms keep reading. I have put 2 and 2 together and figured this out. In one of the new commercials it revealed the location of the challenge house, 85 Caroline Street South Yarra. I looked up the address and found this http://www.realestate.com.au/property-apartment-vic-south+yarra-118655903 a leaked room from one of the couples. Until next time keep renovating Blockheads