Things You'll Need
Instructions
Enter into the apartment lot you'd like to change the lot classification for. Bring up the cheat code box by pressing Control, Shift and C at the same time. There will now be a box in the left hand corner of the screen.
Check the lot classification first. Type "printLotClass" (without quotations) and in the exact case. This will print the lot classification as is. If it is the desired classification, leave it as is. If the classification is different, change it using the following step.
Enter "changeLotClassification" in exact case, followed by "low," "medium" or "high" (without quotations or commas). This will effectively change the lot classification to the particular class.
Save and exit to the neighborhood screen. Enter the lot again to apply and see the NPCs with the correct class level move in.