The online lease feature is currently in beta in Illinois. The lease template is written to comply with Illinois legal requirements, but it doesn’t currently cover specific requirements in Cook County (Chicago) and shouldn’t be used for properties located in that county.
In addition, Trulia isn’t responsible for any custom rules or other materials added to the lease, or anything added to the lease after it’s downloaded. If your property has specific requirements beyond the options offered by Trulia, you should review the lease with an attorney to understand whether it complies with the legal requirements applicable to your property.