Complete Form PTAX-203-B, Illinois Real Estate Transfer Declaration Supplemental Form B. 11 Full actual consideration. Forms are state specific because real estate laws vary significantly from state to state.A OneTime Showing Agreement form is a legally binding agreement between the buyer's broker and the homeowner listing the property for sale. Contract To Purchase Commercial Real Estate One Time Showing Agreement to Show Property. MLS Participants must include the disclosure in the listing agreement, if the listing agreement is not a government-specified form. To successfully register a virtual office, please utilize the following checklist: 1. Outlined in the Illinois Real Estate License Act of. You can obtain the Residential Real Property Disclosure Report form from the Illinois General Assembly website. That is the form that you fill out when you are under contract. 1) Existing Agreements.