Stephanie and DJ knock down all of the clothes in Danny's closet, then with the pole that held up his clothes, they knocked a hole in the wall. In the next scene, when they attempt to fix the hole, all of Danny's clothes have been picked off the floor, leaving that entire aspect fixed. Getting a clothing rack back up in a closet is hard to do, and it is very hard to fool Danny.
Danny picks up Michelle and carries her up the kitchen stairs. However, in the next shot, he is clearly coming up the staircase that comes from the living room.
There is no way the attic and Danny's bathroom are on the same circuit.
When working on the switch for the Murphy bed Jesse touches the two wires together. In reality doing this would case the breaker to trip shutting off the power.
DJ and Steph punch a hole in Danny's bedroom wall with the closet rod. Immediately after this happens, the hole looks like a pretty clean punch all the way through the sheet rock. The next time the camera cuts to the hole, it looks as though either the sheet rock paper was somehow torn, or, there is already Spackle smeared on the edge of the hole...neither scenario would make sense 10 seconds after it happened.
When Joey is in the attic helping Jesse with the renovation, he feeds Jesse a bite of tuna fish sandwich. In the next shot, when Joey sets the sandwich down on the table, the sandwich is still whole.
When Jesse gets stuck inside the wall and Joey messes up his hair, John Stamos is having a very hard time keeping a straight face.