Reference, Part IV: The property requirement
The Like-Kind Standard
Having established what counts as real property, we reach the requirement that gives the provision its name. The exchanged properties must be of like kind.
Reviewed by Nicholas A. Henault, Esq. on October 23, 2026. This reference is general information about section 1031, not tax or legal advice for your transaction. Talk to your own tax adviser or attorney before you rely on it.
Prepared by the BlueLion 1031 exchange team
For personal property before 2018 this was a demanding test, administered through asset classes and product codes, and a taxpayer could fail it by exchanging a bus for a truck. For real property it is close to no test at all. The practical consequence is that a practitioner who has satisfied Chapters 12 through 14 has almost always satisfied this chapter as well, and the analytical energy belongs upstream. This chapter explains why that is so, and identifies the two places where the standard still bites.
15.1 Nature or character, not grade or quality
The regulation supplies the governing distinction in a single sentence. As used in section 1031(a), the words like kind "have reference to the nature or character of the property and not to its grade or quality."1
The sentence following it states the limiting principle: one kind or class of property may not be exchanged for property of a different kind or class.
Everything in the doctrine follows from separating those two ideas. Kind or class is a categorical question. Grade or quality is a question of degree. Differences of degree, however large, do not defeat like-kind treatment.
The regulation then applies the distinction to the case that most often worries taxpayers. The fact that any real estate involved is improved or unimproved "is not material, for that fact relates only to the grade or quality of the property and not to its kind or class."2 A vacant lot and a twenty-story office tower differ enormously in value, in use, in income, and in management burden. Every one of those differences is a difference of degree.
The same sentence, read alongside Chapter 12, does a second piece of work. It confirms that unproductive real estate held by one other than a dealer for future use or future realization of the increment in value is held for investment and not primarily for sale.3 Raw land is both like kind to improved property and independently eligible on the holding requirement.
15.2 The breadth of the standard among real property
The regulation's own examples establish how far the category reaches. Among exchanges solely in kind, it lists a taxpayer who is not a dealer in real estate who "exchanges city real estate for a ranch or farm, or exchanges a leasehold of a fee with 30 years or more to run for real estate, or exchanges improved real estate for unimproved real estate."4
Three propositions are established by that single example, and each is worth stating separately because each recurs.
Use is irrelevant. City real estate and a ranch differ in every functional respect. They are like kind because both are interests in land.
Form of interest is largely irrelevant. A long leasehold and a fee are like kind, notwithstanding that one is a term of years and the other is perpetual ownership. The thirty-year convention that makes this work is examined at 16.2.
Improvement is irrelevant, as 15.1 established.
The working generalization for practice is that all interests in real property located in the United States are like kind to one another, subject to the qualification examined at 15.3 and the categorical bar at 15.4. An apartment building may be exchanged for farmland, a warehouse for a retail strip, a parking lot for a self-storage facility, raw acreage for a medical office condominium. None of these presents a like-kind question.
That breadth explains an important allocation of professional attention. When an exchange fails, it fails because the property was not held for a qualifying purpose, because it was not real property, because a deadline was missed, or because the intermediary arrangement was defective. It rarely fails on like kind. A practitioner spending time on like-kind analysis for a domestic real property exchange is usually spending it in the wrong place.
15.3 Where the standard still operates
Two settings remain in which like kind does analytical work, and both are consequences of the definitional rules rather than of the like-kind standard itself.
The first is the boundary between real and non-real property. Because the standard operates only among properties that are already real property, the real question in a transaction involving fixtures, equipment, or intangibles is not whether the items are like kind but whether they are real property at all. That inquiry belongs to Chapter 14, and the residual treatment of non-real components transferred alongside real property belongs to Chapter 17. Practitioners frequently frame this as a like-kind problem and thereby analyze it under the wrong rules.
The second is the durational quality of an interest. A leasehold with thirty years or more to run is like kind to a fee; a shorter leasehold is not.5 This is genuinely a like-kind determination rather than a definitional one, because a short leasehold is still an interest in real property. It is simply not of like kind to a fee. The distinction and its consequences occupy 16.2.
A third setting deserves mention because taxpayers raise it and the answer is settled. Differences in the quality of title, in encumbrance, in tenancy, in condition, in location, and in income yield are all differences of grade or quality. None of them presents a like-kind question, however dramatic the disparity.
15.4 Domestic and foreign property as categorically unlike
The one hard categorical line within real property is geographic, and it is statutory rather than regulatory.
Section 1031(h) provides that real property located in the United States and real property located outside the United States are not property of a like kind.6 The bar is absolute. It is not a factor, and it is not overcome by showing that the properties are otherwise identical in every respect. A Baltimore apartment building and an otherwise indistinguishable apartment building in Toronto are categorically unlike.
Two points of application follow.
The test is the location of the property, not the residence, citizenship, or domicile of the taxpayer. A United States person exchanging two foreign properties is not caught by section 1031(h), because both sides are foreign and therefore like kind to one another. A foreign person exchanging two United States properties is likewise unaffected by this subsection, though the withholding rules of Chapter 48 will apply.
United States territories require attention rather than assumption. Their treatment is examined at 48.4, and the answer is not uniform across territories or across provisions.
The rule reflects a policy judgment that the continuity-of-investment rationale examined in Chapter 2 justifies deferral only where the reinvestment remains within the United States tax base. Whether that judgment is coherent is taken up at 65.1.
Plain-language guides that use this chapter
Ready to start an exchange?
Call (410) 863-1555 or open your exchange file online.
