Lake Nona Airport Noise Zones: What Buyers Should Check

By Nelson Cruz, P.A. | November 6, 2026

Land around Orlando International Airport is mapped into five aircraft noise zones, labeled A through E, running from the 75 DNL contour down to a composite 55 DNL line. Both the City of Orlando and Orange County regulate those zones, and which one applies to a Lake Nona address depends on whether the parcel sits inside city limits. The zone determines three things a buyer can check in public records: whether an avigation easement and waiver of claim were recorded against the lot, whether the recorded plat carries a printed aircraft noise note, and whether the house was built to a sound level reduction standard.

Where the five zones come from

The zones are not a local estimate of how loud a street feels. Section 333.03(2)(c), Florida Statutes, requires a political subdivision to prohibit incompatible uses inside the noise contours whenever the airport operator has completed a noise study under 14 C.F.R. part 150. The Greater Orlando Aviation Authority has done that work for Orlando International and Orlando Executive, and both local governments built their zone maps on those Part 150 contours.

Orange County Code section 9-603 and City of Orlando Land Development Code section 58.372 define the zones in identical terms:

• Zone A is the 75 DNL contour and above.
• Zone B is 70 to 75 DNL.
• Zone C is 65 to 70 DNL.
• Zone D is a composite of the 60 DNL contour and the 80 dBA single-event contour, out to the 65 DNL line.
• Zone E is a composite of the 55 DNL and 75 dBA contours, out to the Zone D limit.

DNL is a day-night average that models cumulative long-term exposure. The dBA metric is a single-event peak used to describe one flyover as it affects speech. Zones D and E merge the two because an area can average quietly and still be crossed by individual departures. The outer boundary of Zone E is the outer boundary of the whole overlay, so a parcel outside that line carries none of these controls. GOAA publishes the mapped contours as a downloadable MCO noise contour exhibit with a legend reading 75, 70, 65, 60 and 55 DNL for zones A through E.

Which government writes the rule for your address

This is the first question on a Lake Nona search, because the Lake Nona area spans both jurisdictions and the two codes are not identical. Orange County applies Chapter 9, Article XV through county development approvals and county building permits. Inside city limits the governing rule is the AN Aircraft Noise Overlay District, City of Orlando Land Development Code Chapter 58, Parts 2R and 2S, whose ordinance history records an amendment on April 6, 2026.

Three differences matter to a buyer:

The city route gives you a faster test. If a residential parcel is inside any of the five zones, the zoning designation itself is supposed to carry the AN suffix, so the zoning record answers the question without reading a map. In the county, the covenant notice does similar work, which means the declaration you request during the inspection period is the document to search. Sorting out which government regulates a parcel is the same exercise as checking a Winter Garden address against unincorporated county.

What the zone requires of new construction

City section 58.381 sets the controls for residential uses, including single-family, multifamily, mobile home and hotel or timeshare. Reading its published table from the outside in:

• Zone E: notification only.
• Zone D: waiver of claim, notification and a 25 dB sound level reduction.
• Zone C: avigation easement, waiver of claim, notification, and 35 SLR for single-family use or 30 SLR for multifamily.
• Zone B: avigation easement, waiver of claim, notification and 35 SLR.

Use is restricted at the inner end. Single-family, multifamily and mobile home uses are prohibited in zones A and B except where prior approvals or agreements grant the use, while hotel, motel and timeshare uses are permitted there with controls. Mobile homes are specifically prohibited in Zone C, and single-family and multifamily uses in Zone C are permitted but discouraged. Orange County section 9-604 sets out the same prohibitions for its territory.

Sound level reduction is a performance standard. Both codes allow it to be met by any suitable combination of building design, materials and construction details, applied to every occupied room with an exterior wall or ceiling. No building permit issues until the plans show conformance. Orange County goes further at the end of the job, requiring either a filed test by a qualified consultant or a certification of design criteria from a qualified acoustical consultant before a certificate of occupancy.

Why an existing home may carry none of this

The exemptions are broad and they are the reason two neighboring houses can sit in the same zone with different paperwork. Orange County section 9-604 does not apply the zone regulations to existing residential development, existing non-residential development, vacant land zoned for non-residential use, or vacant land zoned for residential use before the article was adopted. The city provision in section 58.380 reads the same way and adds commercial, industrial and office uses as noise-compatible. Neither code requires sound conditioning or alteration of a pre-existing structure, and neither interferes with a pre-existing nonconforming use.

So a 1980s house inside Zone C was very likely never built to 35 SLR and may have no avigation easement on title, while a lot platted after the ordinance in the same zone carries both. The zone tells you which file to pull, and the file tells you what the house actually carries.

What to pull before the inspection period ends

• The jurisdiction. Confirm whether the parcel is inside Orlando city limits or unincorporated Orange County, because the easement and notice rules differ at Zone E.
• The zoning record. Inside the city, look for the AN suffix on the zoning designation.
• The recorded plat. In zones C, D and E the plat should carry the printed sentence that the properties delineated on it are subject to aircraft noise that may be objectionable.
• The declaration of covenants. In the county, zones C, D and E require a bold-face notice of airport noise in the covenant and restriction documents.
• The title commitment. Look for a recorded avigation easement or waiver of claim running to the Greater Orlando Aviation Authority. Orange County defines that instrument as the assignment to an airport proprietor of a right to the total benefits of ownership of real property together with a waiver of all aircraft noise related claims. It runs with the land and does not expire at closing.
• A boundary determination, if the line crosses the lot. On a platted lot under one acre, both codes apply the more stringent zone to the whole parcel. Above one acre more than one zone can apply, and the county zoning manager or the city makes the call. A county determination is appealable to the board of zoning adjustment; a city determination is appealable to the Municipal Planning Board and City Council.

What the map does not capture

GOAA states plainly that there are off-airport areas affected by aircraft operations that carry no site-specific notification. Much of what a buyer hears on a second visit comes from the flight path overhead rather than the contour the parcel sits in. GOAA describes voluntary measures in place at Orlando International since the late 1970s and early 1980s, including preferential runway use favoring south flow operations on 18L/R and 17L/R, assigned headings on departures to the north, nighttime noise abatement headings and designated engine run-up areas. During north flow, departing aircraft between 11:00 p.m. and 7:00 a.m. are turned east on climb-out.

Operations also change. At the FAA’s request, GOAA has published notice that new GPS-based arrival procedures, Established on Required Navigation Performance, began at Orlando International on July 15, 2026, continuing historically established flight paths with performance-based navigation. The FAA, not the airport, controls routing, and GOAA confirms the airport cannot restrict overflight of a specific neighborhood or reduce its hours. Anyone can watch current tracks and file a complaint through GOAA’s Orlando Flight Tracker, and the Aviation Noise Abatement Committee meets quarterly.

Frequently Asked Questions

Does an avigation easement on my lot reduce what I can do with the property?

It is an interest in your real property held by the airport proprietor, and the waiver of claim gives up aircraft noise related claims. Orange County section 9-607 and City of Orlando section 58.384 both state that adopting the current ordinance does not invalidate or modify easements and waivers already recorded, so an older instrument stays in force on its own terms. Read the recorded document rather than the summary on the title commitment, because the scope is set by its own language, and ask a real estate attorney about anything in it you intend to rely on.

If the seller does not mention aircraft noise, is that a disclosure problem?

Both codes require public disclosure to future purchasers through the mechanisms the ordinances name, primarily published notice by GOAA, maps available for public inspection, plat notes and the covenant notice or zoning suffix. Those are duties placed on the airport authority and the local government, not a seller disclosure form. A seller’s own obligations run through Florida law on known material defects, which we cover in our guide to what Florida sellers must disclose on an AS IS sale. Verify the zone from the public record instead of waiting for it to appear in a disclosure.

Can I rely on the zone map alone to compare two Lake Nona homes?

Use it to narrow the question, then confirm the parcel. The maps are available for public inspection at the City of Orlando Planning and Development Department, at the county’s planning and zoning divisions, at the Orlando Public Library and from GOAA, and GOAA is directed to make the information available to brokers and title companies. Where a zone line crosses a lot the determination belongs to the city or the county zoning manager, and the governing instruments for a specific address are the plat, the declaration and the title commitment. Reviewing the declaration is part of the same document request described in our guide to HOA disclosure, documents and estoppel.

Shopping the Lake Nona corridor

Proximity to the airport is part of why this corridor exists, and it is a records question before it is a preference question. We can pull the plat, the declaration and the zoning record for a specific address and tell you which zone and which jurisdiction govern it before your inspection period runs. For the wider corridor picture see the full corridor guide at Live Move Orlando’s Lake Nona guide, or our Lake Nona community page. To work through it with our team, book a strategy session at mvphomegroup.com/nelsoncruz. This is general information about land use and permitting requirements, not legal advice, and not a determination about any particular property or parcel.

Featured image: AI-generated editorial illustration of an unmarked white commercial airliner on final approach above the rooftops of a suburban Central Florida neighborhood in late-afternoon light. No readable text or markings. Not a particular property or listing.