I have been taking a look at the revit file (it is indeed Revit 2015). It is a bit of a mess. Maybe somebody was bit in over his head?
After opeining the file I get this view (screenshot)
Basically it is an area plan. These area plans are imported dwg files. To the right you seem layouts of a house and some side views
Further you notice that two of (more or less) the same area plans are overlapping with an offset.
In the left bottom corner you see basically a same area plan with the layouts (still dwg) but at a much smaller scale.
Zooming in to that area:
Indeed the same area plans with layouts of a house
Next to the two layouts you see a square box. This is the Revit model of a building.
If I create a 3D View I see this (hid the roof to be able to look inside)
So this buiilding does not look like anything on the other layouts.
This building also looks far from complete and a lot seems to be missing.
It seems that this revit file has been 'cleaned'. Most of the views are gone, many families seems to be missing and also no sheets are present.
From the above screenshot what is it (if any) that you want to have converted to autocad?
If I personally look at this Revit Project I think your new architect will find it much easier to start with a clean slate
Louis
Please mention Revit version, especially when uploading Revit files.