Indiana is one of a small group of states that requires sellers to disclose whether a property is within proximity to an airport in the standard residential disclosure form. For Indiana realtors — particularly those working near Indianapolis International, Fort Wayne, or the state’s growing regional airports — understanding how this obligation works, and how it interacts with broader professional disclosure duties, is essential to a sound practice.
The Law: Indiana Code § 32-21-5-7(4)
Indiana’s Residential Real Estate Sales Disclosure Act requires sellers to complete a state-prescribed Sales Disclosure Form before or at the time of accepting a purchase offer. The disclosure statute at Indiana Code § 32-21-5-7(4) requires disclosure of the proximity of the property to an airport.
Like Michigan, Indiana’s statute creates a direct, item-specific airport proximity obligation rather than relying solely on a general material facts clause.
What the statute does not define: Indiana law does not establish a specific distance threshold or sound level that defines when a property is “in proximity” to an airport. This gives sellers and agents some discretion — but it also means the obligation tracks reasonable knowledge. If an agent knows a property is near an airport, and knows that airport generates noise that affects property values, failing to disclose that proximity is legally and professionally risky.
The Indiana Real Estate Commission administers licensing rules that impose broader disclosure obligations on licensees beyond the minimum statutory form. Agents have independent professional duties to disclose material facts — including noise impacts — that a reasonable buyer would consider significant.
Key statute references:
- Indiana Code § 32-21-5-7(4) — Airport proximity disclosure in Sales Disclosure Form
- Indiana Real Estate Commission Rules — Broader licensee disclosure obligations
The Indianapolis Airport — A Market-Specific Consideration
Indianapolis International Airport (IND) is a major UPS and FedEx hub, which means a significant share of its operations occur overnight. For residential properties near IND, the overnight flight concentration can produce DNL impacts that exceed what daytime-focused buyers might expect — the DNL metric penalizes nighttime noise by 10 dB, meaning a neighborhood with heavy overnight cargo traffic can register a higher DNL than casual daytime observation would suggest.
This is the kind of operational context that goes beyond a statutory proximity checkbox — and exactly the kind of material fact that professional disclosure duties require agents to surface.
Why the Proximity Checkbox Isn’t Enough
The peer-reviewed research is unambiguous: aircraft noise affects home values at levels well below any official noise map threshold. The 2025 MIT/Tufts study found that price effects begin emerging at 40–50 dB DNL — and the average noise depreciation runs 0.6%–1.0% per decibel.
Indiana’s statute gets buyers to the fact that an airport exists nearby. Professional practice requires agents to help buyers understand what that proximity actually means for the property’s value and their long-term equity.
The 2021 Friedt & Cohen study at Minneapolis-St. Paul found that 91% of total noise-related property damages fell on properties outside official FAA noise maps. Indiana’s disclosure framework — like most states’ — is calibrated to official map thresholds that miss the majority of noise-affected properties.
Major Indiana Airports
| Airport | Market | Key Consideration |
|---|---|---|
| IND (Indianapolis International) | Greater Indianapolis | Major cargo hub (UPS, FedEx); significant overnight operations; high DNL from nighttime freight |
| FWA (Fort Wayne International) | Fort Wayne / Allen County | Regional hub; mixed commercial/cargo/military National Guard |
| SBN (South Bend International) | South Bend / Michiana | Regional commercial; Notre Dame-driven demand in surrounding residential market |
| EVV (Evansville Regional) | Evansville | Southwest Indiana hub |
| LAF (Purdue University) | Lafayette | University-adjacent aviation; research flight operations |
Practical Checklist for Indiana Realtors
Before listing or making an offer within 15 miles of any Indiana airport:
- Complete the Sales Disclosure Form accurately. Indiana Code § 32-21-5-7(4) requires airport proximity disclosure. Disclose based on your actual knowledge — don’t limit your answer to properties inside official noise contours.
- IND-area transactions: Check Indianapolis Airport Authority noise exposure maps and note whether the property falls within any Part 150 noise program area. Overnight cargo operations create DNL impacts that deserve specific discussion with buyers.
- Pull FAA Noise Exposure Maps at faa.gov/airports/environmental/airport_noise for the relevant airport. Document the property’s estimated DNL level in your file.
- Fort Wayne National Guard operations: FWA hosts Indiana Air National Guard operations. Military aircraft generate different noise profiles than commercial aviation — single-event levels can be significant even for properties not in a continuous noise zone.
- NextGen / PBN check: Use SkyVector or FlightAware to verify whether recent flight path changes have affected the property’s noise exposure. NextGen PBN updates can shift concentrated corridors without any public notification to affected neighborhoods.
- Use aircraftnoisereport.com to generate property-level noise data — helps translate the proximity disclosure into something buyers can actually evaluate.
- First-time buyer counseling: Indiana’s relatively affordable home prices mean noise discounts can represent a meaningful fraction of buyer equity. Entry-level buyers are the most financially exposed to noise-related value impacts and deserve an explicit conversation.
- Document your disclosure process in the transaction file — maps reviewed, data found, what you communicated.
The Professional Standard Beyond the Form
Indiana’s Sales Disclosure Form gives buyers a “yes/no” on airport proximity. But the Indiana Real Estate Commission’s licensee obligations require agents to disclose all material facts they are aware of. Courts in other states have found agents liable for failure to direct buyers to publicly available noise data even when the statute didn’t explicitly require it.
The question isn’t “did I check the box?” It’s “did I give my client the information they needed to make an informed decision?”
Get a Property-Level Aircraft Noise Report
Before your next Indiana transaction near an airport, run a report at aircraftnoisereport.com. Go beyond the proximity checkbox — give your clients actual noise exposure data.
This post is for informational purposes only and does not constitute legal advice. Consult a licensed Indiana real estate attorney for guidance on specific disclosure obligations.