In 2013, a Gallatin County property owner named Carol Gerovac sued the county and the airport authority over her 170 acres on Frontage Road east of Bozeman Yellowstone International Airport. The airport had changed its flight patterns over her land, she argued, without ever acquiring an easement or paying her a dime for it. Her attorney called it an illegal taking. The airport had offered to buy her land back in 2003 for $2,700 an acre, a figure well below what it paid other landowners nearby that same year, some of whom received more than $50,000 an acre for comparable parcels.
Gerovac's case matters to anyone shopping for a home in Belgrade today, but not for the reason most people assume. It's not proof that airports run over property owners. It's proof of something more useful: whether a parcel near BZN has an avigation easement recorded against it determines whether future airport growth is something you get paid for, or something you already agreed to live with rent-free.
Most Belgrade buyers never ask which category their future home falls into. They should, especially now.
Two Houses, Two Very Different Deals with the Sky
An avigation easement is a permanent legal interest that gives an airport the right to fly aircraft over a specific piece of property at low altitude, generate the noise, vibration, dust, and vapor that come with it, and remove anything on that property, including trees, that grows into the flight path. Once it's signed and recorded, it runs with the land forever. It survives every future sale. The buyer who closes on that home in ten years inherits the same waiver the original owner signed.
Here's the part that catches people off guard: not every home near BZN has one. Whether it does depends almost entirely on when the subdivision was platted.
Belgrade planning records show the Gallatin Airport Authority has required avigation easements on new subdivisions inside the airport's influence area for roughly two decades. Airport Ranches, a 40-acre subdivision south of Airport Road, has one filed with its final plat. West Post Subdivision's later phases carry the same requirement. Older neighborhoods platted before the airport authority formalized this practice generally don't, which is exactly the position Gerovac's property was in when flight patterns shifted above it. No easement meant no prior agreement, and no prior agreement meant the airport owed her compensation, at least in theory. It took a lawsuit to test that theory in court.
So the asymmetry cuts in an odd direction. A newer Belgrade subdivision built under an avigation easement has already resolved the noise question, permanently, in the airport's favor. An older parcel without one is legally in a stronger position if operations change dramatically overhead, but that strength only means anything if the owner is willing to litigate to enforce it, the way Gerovac did.
Why the Airport Wants This Signed Before You Move In
The push for these easements has a documented history in Belgrade's own council records. In 2005, then-airport director Ted Mathis asked the Belgrade City Council and Gallatin County Commission to require the easement for every new development within five miles of the airfield, telling officials the authority needed protection as more subdivisions filled in around the runway. Two developments had already agreed to it: the 290-unit Las Campanas subdivision on Belgrade's southeast side accepted the full easement, including its building-height restrictions, while the nearby Spain Bridge Meadows subdivision negotiated a lighter covenant that waived residents' right to sue but left height limits out entirely.
That difference is worth sitting with. Two subdivisions built around the same time, a few miles apart, ended up with two different deals with the airport. One gave up more than the other. That's still true today: what's recorded against your specific lot is not a generic form, it's a negotiated document, and the only way to know its actual terms is to read it.
Not everyone at that 2005 meeting was comfortable with how far the airport's language reached. Bozeman attorney Susan Swimley pointed out that the proposed easement let the airport enter a property and cut down a tree that violated height restrictions without advance notice, something she said wasn't clearly limited even though airport officials promised they'd give notice in practice. County Commissioner Bill Murdock backed the airport's goals but called some of the wording "too wide open." Those objections shaped how later versions of the easement were written, but the underlying trade stayed the same: sign away your right to complain, and the airport doesn't have to negotiate with you every time it grows.
The Disclosure Form Won't Necessarily Catch It
Montana updated its seller disclosure law in 2023, requiring sellers of residential property to tell buyers about any adverse material fact they actually know about, covering everything from wastewater systems to structural issues to, more broadly, anything that could affect a reasonable buyer's decision. That's a real improvement over the state's old buyer-beware standard.
But actual knowledge is the operative phrase. A seller who has lived under a recorded avigation easement for fifteen years without incident may not think of it as an adverse fact worth flagging, especially if the flights have never bothered them personally. The easement itself lives in the title chain, not necessarily in the seller's head, and Montana's disclosure statute doesn't require anyone to go pull recorded documents to check. That's the buyer's job, done through a title search, not through the seller's disclosure form.
This is the detail worth remembering before writing an offer on any Belgrade property inside BZN's influence area: ask your title company directly whether an avigation easement is recorded against the parcel, and if one exists, request the actual document, not a summary of it. Read what it restricts. Height limits on structures and trees are common. Some versions include the broader right-of-entry language that worried Swimley in 2005. None of that will necessarily show up as a single line item on the standard disclosure form.
Why This Question Matters More in 2026 Than It Did Five Years Ago
BZN isn't a static neighbor. The airport authority has been mid-expansion for several years now, adding gates and reconfiguring the terminal to keep up with passenger growth that's outpaced projections. Official airport figures put 2024 passenger volume above 2.6 million, with more than 120,000 annual takeoffs and landings, numbers that have continued to climb since.
More consequential for anyone weighing a purchase near the runway: the airport spent earlier this year working through a federal environmental assessment for a second commercial runway, with the public comment window running from March 16 through April 24, 2026. Airport CEO Brian Sprenger said at the time that construction on that runway, if approved, could begin as soon as 2028. The assessment specifically examines noise impact alongside historical significance, wildlife, and traffic, which means the airport itself has been gathering the data that will determine whose flight exposure changes next.
The FAA uses a measure called Day-Night Average Sound Level, with 65 DNL set as the federal threshold for significant noise exposure. That's the baseline regulators and airport planners reference when deciding which parcels warrant an easement request or a noise mitigation conversation. As BZN's footprint grows, more Belgrade-area parcels move closer to that threshold than were there five years ago. A property that sat comfortably outside any noise conversation in 2020 may not be in the same position by the time a second runway opens.
What to Actually Do Before You Sign
If you're buying near BZN, ask your title company to search specifically for a recorded avigation easement, not just standard encumbrances. If one exists, get the full document and read the height restrictions and any right-of-entry language before you waive your inspection contingencies. If you're selling a home in a subdivision built after the mid-2000s, assume there's a good chance one is recorded against your title and be ready to hand over the actual document rather than a verbal description of it. And if you're weighing an older, unrestricted parcel closer to the runway, understand that the absence of an easement isn't automatically a benefit. It just means the compensation question hasn't been settled yet, and settling it, as Gerovac learned, can mean years in court.
None of this shows up on a portal listing. It shows up in county records, old council minutes, and the fine print of a document most buyers never think to ask for until it's too late to matter.
If you're evaluating a home near BZN or getting ready to list one, Kelley Schlauch can help you pull the right records before you're under contract, not after. Get your free home valuation and let's talk through what's actually recorded on the title before you make your next move.
Frequently Asked Questions
Does every home in Belgrade have an avigation easement? No. The requirement applies primarily to subdivisions platted within the airport's influence area since the mid-2000s. Older parcels and homes outside that boundary may not have one recorded at all.
Will my real estate agent automatically catch this during a transaction? An experienced local agent will know to ask, but the easement itself is a title issue, not something guaranteed to appear on the state disclosure form. A dedicated title search is the reliable way to confirm it.
Can an avigation easement lower what a home is worth? It can factor into value depending on the specific restrictions and how much they limit future building or landscaping, but its presence alone doesn't tell you the whole story. Reading the actual document is the only way to know what it restricts on a given lot.
