1. A commercial or residential building with a finished exterior facade and landscaping and unfinished interior units, to allow for tenant improvements (TI) and the installation of furniture, fixtures, and equipment (FFE).
"Base shell" and "grey shell" refer to a more or less unfinished interior. "Vanilla shell" refers to a minimally
finished interior, usually with ceilings, lighting, plumbing, heating and cooling (HVAC,), interior walls (painted
or unpainted), electrical outlets, rest rooms, and a concrete floor.
2. The completeness of a building at a specific stage of construction; usually refers to a completely finished exterior and a minimally finished or unfinished interior.