Continuity: In episode 1x04 "Hotel Inspector," Zack and Cody's mom takes away the rats to Zack and Cody's bedroom. She goes behind the sofa, but in the next shot of the door, she's not to be seen anymore.

Continuity: In episode 1.10 "Cody Goes to Camp", when London and Mr. Moseby crash through the wall with a car, there's a white betong-block on top of the car, but a few shots later, it's turned itself around a little bit more to the middle.

Deliberate "mistake": The top of the Tipton Hotel is animated. You can tell because in the opening of any episode showing the top of the hotel, there should be 3 visible peaks. You can see 2 peaks and if you look where the middle peak should be, you can see through the top of the hotel to the sky on the other side.