Stepbystep guide on how to write contracts for leases, business partnerships, and employment contracts. A sample lease for tenants and landlords that you can use to create your own version.An Illinois commercial lease agreement defines the terms and conditions of a rental arrangement in which commercial property is leased to a tenant. Attached as Exhibit C is an example of the State's lease template, which includes the standard terms and conditions included in lease contracts with the State. Filling out this lease agreement is straightforward. Illinois court process. In Illinois, courts don't like disclaimers of implied warranties. How to fill out the Illinois Commercial Lease Agreement Template PDF? Our Illinois lease agreement template helps landlords and tenants create clear, compliant rental agreements, covering key terms like rent and security deposits. Notice to terminate must be given at least four months before the end of the term.