I finally found "Ares Studios" on Google Maps: 28757 Industry Drive, Valencia, CA 91355
It's the end of a five-segment row-building. OfficeSpace dot com lists it as 15,756 square feet, leased as of July 2015 at $7.08 per square-foot per year, or $111,552 per year, or $9,296 per month. Now, I'm not entirely sure if that 15,756 SqFt is just for the one segment or for the entire row, in which case the numbers would be one-fifth of what's listed.
I cannot find out who actually owns the building, but considering that it's not a stand-alone "warehouse", I doubt that anyone from the Axanar staff bought it to lease back to the "studio". Until now, I wasn't so sure about that ......