The exterior shots of the house identify it as having the address 501, but when they show a close-up over the front door it says 358.
The front porch shown in the exterior shots doesn't match up with the one that is used for interior filming.
On most of the exterior shots of the Duncan house, you can clearly see the shadow of a palm tree. Palm trees do not grow in Denver.
The family has 6 people in it but the table in the kitchen has only got 4 chairs.