There is a hidden room to the right of the entrance, opened by a button under the desk. If one retrieves the key from the safe next to Mayor McDonough's desk prior to the related quest, there will be no button under the desk.
- Kellogg's house can function as a convenient temporary player home before acquiring the Home Plate. It has two beds and ten storage containers.
- The beds can be used as a save point in Survival mode if Home Plate has not been unlocked.
- Lockpicking the door will not cause any of the residents of Diamond City to become hostile, as the door is not marked as owned.
- Entering Kellogg's house before rescuing Nick Valentine will prevent the button under the desk from spawning.
Kellogg's house appears only in Fallout 4.