I don't think there necessarily has to be an entry from garage to house, especially when there is a side door into the house immediately behind the garage.
Sorry ... my mistake. In looking at the two photos, the one where the officer is holding up the pants, and one where the white bins have been moved and officers are looking at the tools and walkie talkies, we know the photos are taken in the garage. In fact, the blurry white object is the car. The garage is attached, two walls are interior walls, one is the overhead door wall, and one exterior wall has two windows ... the same two windows that we see on the outside of the house next to the side door. We can see that there is no door along the South interior wall of the garage (where there are two window), so there cannot be a exterior door on the South wall of the garage. There must be another door for entering the garage from the house, and it's probably near the bottom of the stairs that lead up to the kitchen.