Whenever the exterior shot of the front of the Baxter house is shown, the ford f100 is seen outside the garage. But, in the very next scene, it's seen inside the garage.
When they show an actual exterior shot of the Baxter home, the walk path from the stairs makes a 90 degree turn running over to the driveway. When the front of the house is shown from the sound stage set, the walkway from the stairs goes straight to the street.
The ages of Mandy, Kristin, Boyd and, to a lesser degree, Eve. And, the obvious: Mandy's height change with the recasting.
Sometimes they treat the fireplace like it was a wood burning fireplace and sometimes a gas burning log system..
While using his amateur radio, the radio displayed a 14mhz frequency. Tim Allen's FCC license, that can be located on the FCC's wireless website, shows that he only holds a Technician license. The 14 MHz frequency is only eligible for General class licenses and above.
When the front of the house is shown in an actual scene the front door is in a deep alcove with a window to the left of the door. When the exterior of the house is shown from the street (typically between scenes) the front door is almost flush with the front of the house and no window to the left.
Most episodes end with Mike in an online video. While it is playing the "play" button is visible, but the "pause" button should be shown as a video plays.
After the show was revived by Fox, Boyd suddenly disappears without any explanation to where he is. He's also never mentioned, as if he never existed.
Under the American flag above the Outdoor Man store is a California state flag. However, the show is set in Denver, Colorado.