- Cold/gray shell — a bare building: structure, exterior, roof, maybe stubbed utilities. No interior.
- Vanilla shell / vanilla box — a shell with basic interior: finished walls, basic HVAC, lighting, restrooms, ready for a tenant's finish-out.
- Tenant improvement / tenant finish-out (TI) — building out the interior of a leased space for a specific tenant (the bulk of medical/dental/office/retail interior work).
- Ground-up — building the entire structure new from the dirt.
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