Objects rendered do not line up perfectly

In my scene I render an identical room north of a room when a door is opened. However, when I create the second room, it is slightly off and not lined up correctly. The coordinates for the new room is:

 structureVector = new Vector3(gameObject.transform.position.x, 10, gameObject.transform.position.z + 40);

The second room is in the direction of an increasing z coordinate, and when I create the second room, both rooms have identical x and y coordinates. Since they are created from the same prefab, they should line up correctly.

Here is a picture showing what the disconnect looks like and the coordinates of the rooms:

Picture

The room models were created in Cinema 4D by extruding segments from a cube.