Interior build-outs typically involve finishing a vacant space so a business can move in and begin operations. This often happens in new buildings or multi-tenant spaces such as retail centers or office parks, where the interior starts as an unfinished shell. It can also refer to brand new builds as well, on a vacant lot.
Commercial remodeling updates an existing, occupied space. Those projects must account for existing structures, operational schedules, and safety considerations while work is underway.