Indiana Code Title 6. Taxation § 6-1.1-4-19.5

(1) a fixed date by which the professional appraiser or appraisal firm shall have completed all responsibilities under the contract;

(2) a penalty clause under which the amount to be paid for appraisal services is decreased for failure to complete specified services within the specified time;

(3) a provision requiring the appraiser, or appraisal firm, to make periodic reports to the county assessor;

(4) a provision stipulating the manner in which, and the time intervals at which, the periodic reports referred to in subdivision (3) of this subsection are to be made;

(5) a precise stipulation of what service or services are to be provided and what class or classes of property are to be appraised;

(6) a provision stipulating that the contractor will generate complete parcel characteristics and parcel assessment data in a manner and format acceptable to the legislative services agency and the department of local government finance;

(7) a provision stipulating that the department of local government finance has unrestricted access to the contractor's work product under the contract;  and

(8) a provision stating that the contract is void and unenforceable if the appraiser is not certified by the department of local government finance on the date that the contract is executed or the department of local government finance subsequently revokes the professional appraiser's certification under IC 6-1.1-31.7-4 after the contract is executed.

(1) one (1) or more model contracts;

(2) one (1) contract with alternate provisions;  or

(3) any combination of subdivisions (1) and (2).