What part of a lease specifies the landlord's obligations regarding tenant improvements?

The correct answer highlights the significance of the Work Letter in a lease agreement, particularly regarding the landlord's obligations for tenant improvements. A Work Letter is a specific document or section within a lease that details the scope of work that the landlord will undertake to prepare the leased space for the tenant's use. This includes specifications about renovations, alterations, or any build-outs that the landlord is obligated to complete before the tenant occupies the space.

The Work Letter provides clarity on various aspects, such as timelines, the quality and type of materials used, and the responsibilities for costs associated with the improvements. It ensures both parties have a mutual understanding of what is expected in terms of the physical space's condition upon lease commencement.

In contrast, the other choices serve different purposes. A Sub Lease involves a tenant leasing the property to another party and does not pertain to the landlord's obligations. Net Lease and Gross Lease refer to different rental pricing structures regarding expenses associated with property maintenance, taxes, and insurance, but they do not specifically address tenant improvements or the landlord's responsibilities regarding them. Thus, the Work Letter is the key document that outlines how landlords should fulfill their obligations concerning tenant improvements within a lease.