North Carolina is one of the few states where an airport authority — not just the legislature — has taken an active role in defining and enforcing aircraft noise disclosure obligations. The Raleigh-Durham Airport Authority’s noise disclosure program goes beyond what the state’s residential disclosure statute technically requires, creating a layered set of obligations that NC realtors need to understand clearly.
The Law: NC General Statute 47E and the RDU Noise Disclosure Program
North Carolina’s Residential Property Disclosure Act (N.C.G.S. § 47E) requires sellers to complete a standard Residential Property and Owners’ Association Disclosure Statement. The statute mandates disclosure of any “notice from any governmental agency affecting this real property” — and the Raleigh-Durham Airport Authority (RDU) has formally positioned itself as a governmental agency issuing such notice.
The RDU Program: The RDU has adopted a formal noise disclosure requirement for the resale of homes located within areas where the annual average daily sound level is 55 dB or higher as depicted on the RDU Composite Noise Contour Map. This 55 dB threshold is notably more protective than the FAA’s 65 dB administrative threshold — one of the lowest official disclosure triggers in the country.
For homes within the RDU 55 dB contour that are listed for resale:
- Noise disclosure must be included as part of the sales contract
- The RDU has notified property owners within noise-impacted areas by mail
- Recent homebuyers within the zone should have received notification from prior owners
NC Disclosure Statement: Sellers can select “no representation” for certain answers on the NC form, which is a neutral response — but it does not apply when a governmental agency (like RDU) has issued formal notice.
Key law references:
- N.C.G.S. § 47E — Residential Property Disclosure Act
- RDU Composite Noise Contour Map — Establishes 55 dB threshold for disclosure
- NC Real Estate Commission rules on material facts disclosure
The 55 dB Threshold — More Protective Than FAA, Still Missing Most Affected Properties
The RDU’s 55 dB disclosure threshold reflects a meaningful improvement over the FAA’s 65 dB administrative standard. At 55 dB DNL, the authority acknowledges that market pricing effects are real and buyers deserve notice.
But even the 55 dB line leaves a significant gap. The 2025 MIT/Tufts study documented that aircraft noise begins affecting property values at 40–50 dB DNL, and the Friedt & Cohen 2021 study found that 91% of total noise-related damages at a comparable airport fell on properties outside official contour boundaries.
Properties in the 40–54 dB DNL range around RDU are affected by the noise-pricing relationship — and currently receive no formal disclosure.
Beyond RDU: North Carolina’s other commercial airports — Charlotte Douglas (CLT), Piedmont Triad (GSO), and Wilmington (ILM) — do not have the same formalized noise disclosure programs as RDU. For transactions near those airports, the broader material facts obligation under N.C.G.S. § 47E and NAR Code of Ethics Article 2 applies.
Major North Carolina Airports
| Airport | Market | Key Consideration |
|---|---|---|
| CLT (Charlotte Douglas) | Charlotte metro | Major hub; 2008 Pope study documented 37% increase in implicit noise price after disclosure |
| RDU (Raleigh-Durham) | Triangle / Research Triangle | Formal 55 dB disclosure program; RDU mails affected homeowners directly |
| GSO (Piedmont Triad) | Greensboro / Winston-Salem / High Point | Triad metro; no formalized airport noise disclosure program like RDU |
| ILM (Wilmington International) | Coastal Wilmington | High-demand coastal market; retirement and second-home buyers unfamiliar with local airport traffic |
| AVL (Asheville Regional) | Asheville / Western NC | Growing market; mountain terrain affects flight paths and noise concentration |
The Charlotte Douglas Disclosure Study
A 2008 study by Jeffrey Pope (Journal of Urban Economics) examined what happened to home prices near Charlotte Douglas Airport when the airport published its first comprehensive noise exposure map. The result: the implicit price buyers paid per decibel of noise increased by 37% after disclosure. The noise discount was always there — disclosure made buyers able to see it and negotiate accordingly.
For Charlotte-area realtors, this finding has direct practical implications. CLT is one of the fastest-growing major hubs in the country. In markets without the kind of formalized disclosure program RDU runs, agents who proactively surface noise data are delivering measurably better service — and creating better-informed, more satisfied clients.
Practical Checklist for North Carolina Realtors
Before listing or making an offer within 15 miles of any North Carolina airport:
- RDU-area transactions: Check the RDU Composite Noise Contour Map. If the property is within the 55 dB contour, noise disclosure must be included in the sales contract. Confirm current map boundaries — they are updated periodically.
- Check for RDU notification history. Properties within the noise-impacted area should have received formal notification letters from RDU. Ask sellers if they received one. Its presence or absence is material.
- CLT-area transactions: Charlotte Douglas does not have RDU’s formalized disclosure program. Apply the broader N.C.G.S. § 47E material facts analysis: would a reasonable buyer consider aircraft noise significant? If yes, disclose.
- Pull FAA Noise Exposure Maps for CLT, GSO, ILM, and AVL at faa.gov/airports/environmental/airport_noise. Document the property’s estimated DNL level.
- NC Disclosure form “no representation” option: Do not use the “no representation” option when a governmental agency has issued formal noise notice for the property’s area. This response is appropriate for conditions the seller genuinely has no knowledge of — not for formal governmental designations.
- Use aircraftnoisereport.com to generate property-level noise data for any NC airport market — especially valuable for CLT, GSO, and ILM where no formalized airport disclosure program exists.
- Document your research in the transaction file — which airports are within relevant distance, what noise level data you found, what you communicated.
The Rapid Growth Context
The Research Triangle, Charlotte metro, and coastal NC markets are among the fastest-growing in the Southeast. Transplant buyers from low-airport-density markets frequently underestimate the noise environment around major hubs like CLT and RDU. Proactive disclosure and noise counseling isn’t just legal protection — it builds the kind of client trust that generates referrals.
Get a Property-Level Aircraft Noise Report
Before your next North Carolina transaction near an airport, run a report at aircraftnoisereport.com. Whether you’re working near RDU’s 55 dB program or in a market without formal noise disclosure infrastructure, property-level data is your best tool.
This post is for informational purposes only and does not constitute legal advice. Consult a licensed North Carolina real estate attorney for guidance on specific disclosure obligations.