I am the one people warn you about.
Lord of Dorkness
Are you placing upper floors during the first round? Only the very first building tile placed by the very first player must be a first floor building. After that, you can start building upwards. Remember that building upper levels does not require a bidding chip for tile placement. Also remember that you cannot place a first floor tile unless you have at least one bidding chip in one of the zones to be covered. You will likely run out of legal first floor places to build well before the building tiles are exhausted in a round.
We thought you had to bid for all buildings. Awesome, thanks for the help.