What would NOT be included in the Rentable Area?

The correct answer identifies major vertical penetrations as something not included in the Rentable Area calculation. The Rentable Area typically encompasses all areas that a tenant could use or benefit from—this includes usable areas of individual tenant spaces, building common spaces such as lobbies and hallways, and even incidental spaces that may be allocated to tenants.

However, major vertical penetrations, such as stairwells, elevator shafts, and other features that span multiple floors, are not considered part of the Rentable Area because they do not provide direct useable space for tenants. Instead, these penetrations are structural elements that facilitate movement within the building but do not contribute to the calculated area that can be rented out or occupied by tenants.

Understanding this distinction is critical for accurate space planning and financial calculations in commercial real estate, as it helps delineate what tenants are actually paying for versus what is part of the building's infrastructure.