From the Charleston Magazine article:
https://charlestonmag.com/high_life
“A striking angular condo in the sky, built atop a circa-1858 structure at 301 King Street that houses an Apple Store on the ground floor and Blue Ion’s offices on the second level.
Yessian worked closely with architect Kevan Hoertdoerfer, who also oversaw the renovation of Blue Ion’s office space, and general contracting firm Renew Urban to conjure the glass, steel, and fiberglass structure smack dab in the middle of historic downtown.”