I received this request via email:
a question in revit vasari or you can get the orientation and exposure of a face of a mass or a wall
for example
classify all the walls to the north or the south-west?
put them in a schedule of the walls?

Vanilla Revit can’t do this. But perhaps someone would like to make a little add-in, macro or script that processes Walls, determines their ‘facing’ orientation, and then inputs this data into a Shared Parameter of Walls? Successful challenger will obviously get a mention on the blog.

Maybe something like this already exists out there… Feel free to comment!

Thanks to Amy Manning, who ‘reminded’ me that Case do have a tool that does exactly that 🙂

Its the aptly named “External Wall Facings”.  More info at this link.

Much of the legwork was done back in this 2010 post by Jeremy:
The Building Coder: South Facing Walls

Note:  I used my Revit Master Search, which led me to this post, which led me to Sort and Mark by tools4revit.  However, I don’t think this adds orientation relative to North – I’m pretty sure it just determines Flip/Mirror orentation?