An owner who has deferred capital gains and depreciation recapture through a lifetime of 1031 exchanges eventually faces a question that has nothing to do with tax rates: what happens to that deferred gain when the owner dies. Under Section 1014, an heir who inherits appreciated property generally receives a basis equal to the property's fair market value at the date of death, which can eliminate the built-in gain and recapture the original owner deferred for decades. This is often called the step-up in basis, and it is one reason some owners keep exchanging into larger properties rather than ever selling outright.
A Section 721 contribution to a REIT's operating partnership does not remove that planning option. OP units received in exchange for contributed property are themselves a capital asset, and units held until the owner's death generally receive the same basis step-up treatment as directly owned real estate would. What changes is what the heir actually receives afterward: not a specific, tangible property they can occupy, lease, or sell on their own terms, but an illiquid partnership interest tied to the performance and redemption rules of the operating partnership.
The estate planning question is not whether to defer gain during life, since both a 1031 exchange and a 721 contribution accomplish that. It is what asset the heirs end up holding, and whether that asset fits what the heirs are prepared to manage.
When an owner holds real property, including property acquired through a chain of 1031 exchanges, until death, the property's basis in the hands of the heir is generally reset to fair market value as of the date of death under the rules described in IRS Publication 551. Any capital gain and depreciation recapture that had been deferred through the owner's lifetime exchanges is effectively eliminated for federal income tax purposes; the heir does not inherit the original low basis, only the property itself.
That heir then owns real property directly, with full control over whether to keep it, sell it, or exchange it again, subject to their own tax situation going forward. The step-up does not depend on how many times the property was exchanged during the original owner's life, only on the basis and value at the date of death.
An owner who contributed property to an operating partnership under Section 721 during life holds OP units rather than real property at death. Those units, like other capital assets, are generally eligible for a basis step-up to their fair market value at death under the same Section 1014 framework, which means the gain deferred at the time of contribution can also be eliminated for the heir, similar in effect to the treatment of directly held real estate.
The difference is in what the heir inherits. Instead of a building with a lease roll and a maintenance history the heir can inspect, the heir inherits units in a partnership whose value depends on the REIT's ongoing management and whose conversion or redemption is governed by the partnership's own terms, not by the heir's preferences. The tax benefit transfers; the practical asset does not resemble the original property.
An owner deciding between continuing 1031 exchanges into ever-larger properties and contributing property to an operating partnership should weigh what the eventual heirs are equipped to handle. Heirs who are not interested in property management, live far from the property, or would rather have a liquid or semi-liquid financial asset may be better served by inheriting OP units, even accounting for the units' own illiquidity and holding-period restrictions, than by inheriting a commercial building they have no interest in operating.
Heirs who want to continue direct real estate ownership, or who have the interest and capacity to manage property themselves, may be better served by inheriting real estate directly, since that preserves their ability to keep the property, exchange it themselves, or sell it on the open market without going through a partnership's redemption process.
Converting property to OP units during life does not create liquidity for the estate the way a cash sale would, since OP units are not publicly traded and typically carry redemption or holding-period restrictions. An estate that needs cash to pay estate tax or settle other obligations cannot necessarily liquidate OP units on the same timeline a sale of real property might allow, and the operating partnership's own rules govern any redemption request.
A contribution also does not by itself address estate tax exposure, probate structure, or how units should be divided among multiple heirs; those are separate planning questions that depend on the size of the estate and the number of beneficiaries, and they apply whether the underlying asset is real property or OP units.
An owner who values both diversification during life and a clean step-up for heirs can generally pursue a 721 contribution without giving up the step-up benefit, since the OP units themselves carry the deferred gain forward rather than requiring the owner to sell outright. The decision of when to contribute, and how much of a portfolio to convert into units versus keep as direct real estate, is a separate question from whether the step-up will apply at death.
What deserves attention before a contribution is how the operating partnership's units are actually transferred and valued at death, and what documentation heirs will need to establish the stepped-up basis, since that process differs from the title transfer and appraisal process heirs go through with directly owned real property.