Indiana Code Title 32. Property § 32-21-5-10

Sec. 10. (a) An owner must complete and sign a disclosure form and submit the form to a prospective buyer before an offer for the sale of the residential real estate is accepted.

(b) An appraiser retained to appraise the residential real estate for which the disclosure form has been prepared shall be given a copy of the form upon request.  This subsection applies only to appraisals made for the buyer or an entity from which the buyer is seeking financing.

(c) Before closing, an accepted offer is not enforceable against the buyer until the owner and the prospective buyer have signed the disclosure form.  After closing, the failure of the owner to deliver a disclosure statement form to the buyer does not by itself invalidate a real estate transaction.  A buyer may not invalidate a real estate transaction or a contract to purchase real estate due to the buyer's failure to sign a seller's disclosure form that has been received or acknowledged by the buyer.