Lease decisions become more expensive when they are discovered late. A forward calendar should identify expiration, renewal and extension options, termination rights, rent adjustments, operating-expense reconciliations, insurance renewals, inspections, maintenance obligations, security changes, guarantees, and any notice delivery requirements.

Each entry should include the contractual date, the internal decision date, responsible person, required documents, delivery method, dependencies, and status. Owners can use the calendar to plan retention, marketing, capital work, and vacancy exposure. Occupants can use it to compare renewal, relocation, expansion, contraction, assignment, or sublease alternatives.

The calendar supports decisions but does not replace review of the signed lease and amendments. Legal counsel should interpret rights and notice requirements when a deadline or obligation is material.