Air rights are not just a drone issue. They are a housing issue, a zoning issue, an infrastructure issue, and a market-design issue. Cities already work with vertical entitlements through zoning envelopes, floor-area ratios, transferable development rights, landmark air-rights transfers, and upzoning. Telecommunications regulators around the world also manage an invisible, multi-dimensional resource - spectrum - by defining use rights, interference rules, geographic boundaries, license terms, auctions, leasing, and secondary markets. None of these analogies prove that low-altitude airspace should be nationalized or privatized in some crude way. They show something more practical: scarce invisible resources can be governed by defining rights, recording them, allowing transfer, and respecting compensation. A homeowner-centered air-rights policy can unlock housing and aerial mobility while strengthening constitutional property rights, not undermining them.
I. Development air rights: the existing 3D city
Cities already operate in three dimensions, whether they talk about it that way or not. Zoning codes do not just say what may happen on the ground. They define height, bulk, setbacks, floor-area ratio, light, air, views, shadows, lot coverage, and transferable capacity. A parcel’s economic value often turns less on its square footage than on the volume of lawful building it carries.
Transferable development rights - TDRs - drive this point home. In a TDR program, one parcel’s unused development capacity can be moved to another parcel, usually subject to zoning rules and recordation. The sending site might be a landmark, a theater, a farm, a conservation area, or a low-density parcel. The receiving site might be better positioned for growth. The legal system treats development capacity as separable enough to be traded, even though it remains embedded in public planning.[1]
New York City puts this in concrete terms. Its Zoning Resolution allows transfers from listed theaters and landmark sites under defined procedures. The theater-transfer provisions identify granting and receiving sites, cap the amount of transferred floor area, require joint applications by owners, and call for legal instruments and notices of restrictions to be recorded. The landmark-transfer provisions likewise let the City Planning Commission approve transfers subject to findings about design, scale, light, air, and planning effects.[2]
Penn Central casts the constitutional shadow over this whole field. The Supreme Court upheld New York City’s landmark restrictions on Grand Central Terminal, partly while discussing the availability of transferable development rights. TDRs did not make every takings question disappear, and the dissent sharply questioned whether they were adequate. But the case demonstrates that development rights are legally and economically real enough to mitigate burdens and shape land-use policy.[3]
II. Upzoning as a property-rights tool
Upzoning is often framed as deregulation, but it is better understood as restoring or expanding an owner’s lawful vertical opportunity. A parcel that can host two homes instead of one, six stories instead of three, or accessory units instead of wasted setback space has gained a more valuable development envelope. Done well, upzoning can increase housing supply, expand family wealth, reduce exclusionary scarcity, and let owners decide what to do with their own land.
A homeowner-centered upzoning policy is a different animal from confiscatory planning. It does not announce that because the public wants housing, the owner must hand over property for free. It says the owner may use more of the parcel’s vertical potential, subject to clear externality rules. The political bargain is pro-growth and pro-owner at the same time: more homes, more value - not command-and-control extraction.
This is why air rights and upzoning belong in the same conversation. Both involve the legal definition of valuable vertical capacity. Both require attention to neighbors, infrastructure, light, air, safety, and public services. And both can be abused if governments extract access, easements, or money without constitutional discipline. The exaction cases - Nollan, Dolan, Koontz, and Sheetz - are therefore central to air-rights policy. If the government demands a vertical access right as the price of a permit, the demand ought to be tied and proportionate to the project’s actual impact.[4]
III. Applying TDR lessons to drone corridors
The first lesson from TDRs is that intangible land-use capacity can be made legible. A development right is not a brick. It is a legally defined entitlement to build within a volume. Once defined, it can be measured, restricted, transferred, recorded, taxed, financed, or retired. Low-altitude access rights work the same way in principle. A drone-access right is not ownership of air molecules. It is a permission to use a defined spatial and temporal corridor over land.
The second lesson is that rights have to be recorded and bound to something. TDR transfers function only because the sending and receiving sites are identified and instruments are recorded. A drone corridor should do the same - identify the burdened parcels, altitude band, route, time window, use case, sensor limits, compensation, duration, renewal rights, and termination conditions. Without a dynamic registry and functioning market, operators will face uncertainty, and owners will worry about invisible encumbrances they cannot track.
The third lesson is that markets need planning constraints wrapped around them. TDR programs do not allow any owner to shift any density anywhere; at the same time, they do not close off any option from being taken or issued. They identify sending and receiving areas and require public findings. Drone-access markets should follow that pattern. Some corridors run over public roads. Some sensitive parcels should be excluded. Some public-safety uses should have priority. Some commercial uses should pay. Some sensor types should be flatly prohibited absent specific consent.
The fourth lesson is that compensation is what creates legitimacy. Causby and Griggs show that when recurring aerial uses burden private land, the law may characterize the burden as an easement.[5] TDRs show that vertical entitlements can be monetized. Rule’s sharing-economy proposal shows that landowners can license low-altitude airspace to drone operators.[6] Skorup’s road-airspace and aerial-law work shows how public corridors and state/local property rules can reduce private conflicts.[7] Taken together, these sources support a practical model: start with public corridors and supplement with a voluntary private air-rights market.
IV. Spectrum as the worldwide analogy
Radio spectrum is the most instructive non-real-estate analogy. Spectrum is invisible, scarce, multi-dimensional, and useful only if users avoid harmful interference. Modern spectrum policy increasingly relies on auctions, flexible-use licenses, secondary markets, trading, leasing, sharing, and interference rules.
The Cato Institute’s Dale Hatfield and Phil Weiser describe the property-rights movement in spectrum as guided by Ronald Coase’s insight that marketable rights can allocate scarce resources more efficiently than command-and-control assignment. They also warn that defining spectrum rights is hard because spectrum is multi-dimensional: frequency, geography, power, time, interference, antenna characteristics, and adjacent-channel spillovers all matter.[8]
The U.S. FCC’s auctions illustrate what market design looks like in practice. Congress authorized the FCC in 1993 to use competitive bidding for commercial spectrum licenses, and the FCC describes auctions as more efficient than comparative hearings or lotteries for handing out licenses.[9] Other regulators have moved in similar directions. Ofcom in the United Kingdom allows eligible spectrum to be re-licensed to another licensee under spectrum-trading rules. Australia’s ACMA allows spectrum licenses to be traded, including in whole or in part, with recognition through the license register. Ireland’s ComReg materials describe secondary-market trading and leasing of spectrum usage rights.[10] At the international level, the ITU-R coordinates the global radio-frequency spectrum and satellite orbit framework to prevent harmful interference across borders.[11]
The analogy to airspace is imperfect. Spectrum licenses are usually government-created use rights, not fee-simple title. Airspace over land starts from a stronger private-property baseline in the lower reaches. But the design lessons carry real weight. The resource can be invisible and still be governed. Rights can be limited and still be valuable. Boundaries can be technical and still be enforceable. Markets can run with public oversight. Secondary trading can push rights toward higher-value uses. Interference rules can coexist with transferability.[12]
Airspace, like spectrum, is multi-dimensional. The relevant dimensions include latitude, longitude, altitude, time, speed, noise, light, privacy, sensor payload, risk, emergency priority, weather, and landing contingency. A blunt rule like “drones may fly anywhere below 400 feet” is roughly equivalent to saying “radios may transmit anywhere below a certain frequency.” It ignores interference, context, and rights. A better rule defines corridors, rights, obligations, and remedies.[13]
V. A homeowner-centered air-rights market
A serious air-rights regime should weave together zoning, property records, digital registries, and aviation interfaces into something workable. Start with a 3D digital property ledger. The ledger would not replace county land records but would supplement them with machine-readable information about development rights, TDRs, avigation easements, drone-access licenses, height restrictions, view easements, solar easements, and public corridor rights. The owner should be able to see, sell, license, or refuse burdens on the parcel’s vertical estate.
Second, align upzoning with owner value. Local governments should identify where additional vertical development makes sense and make that entitlement available to owners - not only to large developers. Small-lot upzoning, accessory dwelling units, missing-middle housing, and transferable air rights can all let homeowners participate in growth. If public goals require burdening a parcel, the system should compensate rather than quietly downzone or appropriate.
Third, create standardized low-altitude access instruments. A route license should be straightforward to understand and cheap to execute. A recorded easement should be available for long-term or high-frequency use. Digital permissions should be revocable unless intentionally recorded. Compensation should be transparent enough that a market price can actually form.
Fourth, auction or lease public corridors before burdening private ones. Streets and public rights-of-way are already corridors of public infrastructure. Cities can define aerial lanes above them, subject to FAA safety constraints, and lease access to qualified operators. Revenues can fund public safety, broadband, sidewalks, or affordable housing. Private corridors can fill gaps where owners voluntarily opt in.
Fifth, use community benefit rules. A neighborhood that hosts recurring drone corridors should receive compensation, transparency, and enforceable limits. This matters especially for drone-first response and delivery services. Low-income communities should not end up as the default overflight zones simply because they have less political power.
Sixth, include takings safeguards. Any statute should state plainly that it does not grant nonconsensual private low-altitude access without compensation and does not preempt common-law trespass, nuisance, privacy, or constitutional claims except where federal law clearly requires it. That kind of language reduces the risk that an air-rights framework becomes an inadvertent confiscation.[14]
VI. Counterarguments and answers
Airspace should remain a public commons. At high altitudes, that argument has real force because national aviation depends on a public transit system. But the lower air column over a home is not comparable to jet routes above the clouds. It is bound up with privacy, noise, safety, repose, and everyday use. Treating it as ownerless would socialize the benefits of drone commerce while dumping the burdens onto surface owners.
Markets in air rights will over-commodify the city. But the city is already a market in land, leases, easements, development rights, mineral rights, conservation rights, and utility corridors. The real question is not whether rights will exist; it is whether those rights will be visible, tradable, and compensated - or hidden inside regulatory privileges that favor whoever has the most political connections. Tyler v. Hennepin County is a pointed reminder that government cannot simply pocket surplus value from private property because some public process happened to exist.[15]
National uniformity. Drones and aircraft cross jurisdictional lines, and the FAA has to preserve safety and navigability. True enough. But uniformity does not require erasing local property rights. Spectrum supplies the answer: technical standards can be national or international, while licenses, boundaries, auctions, and secondary markets define who may use what resource and where. FAA safety rules can coexist with state property rights if both are drafted with care.[16]
Private rights will block socially beneficial uses. Sometimes they will. That is why the Constitution permits eminent domain for public use with just compensation. The discipline of compensation forces governments and operators to ask whether the corridor is actually worth what it costs. That is a feature, not a defect. It keeps the political system from treating homeowners as free infrastructure.
Administrative complexity. A 3D property ledger, digital consent registry, recorded easements, drone APIs, and public corridor auctions may sound like a lot of moving parts. But the alternative is worse: millions of unrecorded overflights, inconsistent local pushback, uncertain tort law, preemption litigation, privacy disputes, and public distrust. Complexity should be managed through standardization, not dodged by pretending rights do not exist. The technology already exists, with the capacity to generate new revenue streams for local communities without being captured.
Conclusion
Upzoning, TDRs, and spectrum policy all converge on the same insight. Scarce invisible resources can be made useful when law defines rights, permits transfer, guards against interference, and respects compensation. The lower sky over private land deserves that same seriousness. A homeowner-centered air-rights market can support housing, infrastructure, public safety, and drones without abandoning the constitutional core of property. The future city will be three-dimensional. The legal question is whether ordinary owners get to participate in that value or whether their vertical estate gets treated as a free input for everyone else. A property-rights approach chooses participation, consent, and compensation.
Notes
[1] Penn Central Transportation Co. v. City of New York, 438 U.S. 104 (1978).
[2] New York City Zoning Resolution § 81-744; New York City Zoning Resolution § 74-79.
[3] Penn Central, 438 U.S. at 137; id. at 150 (Rehnquist, J., dissenting).
[4] Nollan v. California Coastal Commission, 483 U.S. 825 (1987); Dolan v. City of Tigard, 512 U.S. 374 (1994); Koontz v. St. Johns River Water Management District, 570 U.S. 595 (2013); Sheetz v. County of El Dorado, 601 U.S. 267 (2024).
[5] United States v. Causby, 328 U.S. 256 (1946); Griggs v. Allegheny County, 369 U.S. 84 (1962).
[6] Troy A. Rule, Drones, Airspace, and the Sharing Economy, 84 Ohio St. L.J. 157 (2023).
[7] Brent Skorup, Drone Technology, Airspace Design, and Aerial Law in States and Cities (Mercatus Center, Dec. 2020); Brent Skorup, Aerial Law in States and Cities, 55 Akron L. Rev. 157 (2022).
[8] Dale Hatfield & Phil Weiser, Toward Property Rights in Spectrum: The Difficult Policy Choices Ahead, Cato Institute Policy Analysis No. 575 (Aug. 17, 2006).
[9] Federal Communications Commission, About Auctions (2023); Congressional Research Service, History of the FCC’s Spectrum Auction Authority: 1993-2025 (2026).
[10] Ofcom, Spectrum trades; Australian Communications and Media Authority, Trade your spectrum licence; ComReg, Spectrum leases in Ireland (2017).
[11] International Telecommunication Union, ITU-R: Managing the Radio-Frequency Spectrum for the World.
[12] Ronald H. Coase, The Federal Communications Commission, 2 J.L. & Econ. 1 (1959).
[13] Hatfield & Weiser, supra note 8.
[14] Cedar Point Nursery v. Hassid, 594 U.S. 139 (2021); Kaiser Aetna v. United States, 444 U.S. 164 (1979).
[15] Tyler v. Hennepin County, 598 U.S. 631 (2023).
[16] FAA & U.S. Department of Transportation, State and Local Regulation of Unmanned Aircraft Systems (UAS) Fact Sheet (updated July 2023).