Most sellers meet this form late, on the day they are asked to sign it, and read it as a legal trap. It is the opposite. It is the one document in the file that protects a seller who tells the truth, and the only one that reliably sinks a seller who does not.
The short answer
Indiana requires a seller's residential real estate sales disclosure on most sales of homes with no more than four units, and the seller has to complete it and get it to the buyer before an offer is accepted. It is answered from what the seller actually knows. It is not a warranty and it does not replace an inspection.
When it is due
Before acceptance, not at closing. The rule sits in Indiana Code 32-21-5. In practice that means the form should be finished during listing preparation, while there is still time to look something up, rather than at nine at night with an offer on the table and a deadline in the morning. It applies to ordinary sales, to exchanges, to installment contracts and to a lease with an option to buy.
What it asks about
The condition of the systems and structure, in plain categories: foundation and structure, roof, the mechanical systems, plumbing, electrical, the water supply and the sewer or septic, and known hazards. For each one the honest answers are yes, no, or do not know, and do not know is a real answer when it is true.
What it is not
The statute says directly that the disclosure is not a warranty. Nothing on it guarantees that the furnace will last the winter. It also does not substitute for the buyer's own inspection, which is a separate exercise with a separate purpose, covered in the note on what a home inspection actually covers. A seller who fills it out carefully has not promised anything. A buyer who reads it instead of inspecting has not checked anything.
What a seller is actually liable for
Actual knowledge. Indiana does not hold a seller responsible for a defect that was genuinely unknown, or for information that came from a public agency or a licensed professional that the seller reasonably believed was accurate and passed along without carelessness. What creates exposure is knowing about the wet corner of the basement and answering no. That is not a paperwork error. That is the fact pattern behind almost every one of these disputes.
Who is excused from giving one
There is a short list of exempt transfers, and it is narrower than people expect. It covers things like a transfer out of an estate, a foreclosure, a bankruptcy, a transfer between people who already co-own the property, and a transfer to a spouse. Selling a house you never lived in is not on that list. Neither is selling as is. An as-is sale changes what the buyer can ask you to repair. It does not excuse the disclosure.
The uncomfortable part
Sellers hide things on this form to protect a price, and it is the most expensive small decision in the transaction. Disclosed problems get negotiated once, in daylight, usually for less than the seller feared. Undisclosed problems get discovered by the buyer's inspector, which costs the seller leverage, or by the buyer two years later, which costs the seller a lawyer. If a defect is significant enough that you are tempted to leave it off, it is significant enough that somebody will find it.
The part I will not answer
Whether a particular condition rises to a defect you are required to disclose is a legal question, and it belongs to a real estate attorney, before the form is signed rather than after. Whether a past repair was done to code belongs to the county or municipal building department that would have issued the permit. What a repair should cost belongs to the contractor who would do it, in writing.
If the house is not listed yet, the note on what to do before the photographer comes is the other half of preparing it, and the sellers page sets out the rest of the sequence.
This note is general. It is not legal advice, and whether a specific condition must be disclosed in your sale depends on facts only your attorney can assess.