A 721 exchange lets a real estate investor contribute property to a real estate investment trust’s operating partnership in exchange for units of that partnership—without recognizing the built-in gain at the time of the contribution. The name comes from Section 721 of the Internal Revenue Code, which provides that no gain or loss is recognized when property is contributed to a partnership in exchange for a partnership interest.
In practice, the 721 exchange is how individual property owners convert a single building—or a fractional Delaware statutory trust interest—into a diversified, professionally managed REIT position while continuing to defer capital gains tax. The structure it relies on is called an UPREIT, and understanding the two together is the key to understanding when this tool makes sense and when it doesn’t.
How the UPREIT structure works
Most large REITs are organized as umbrella partnership REITs, or UPREITs. The REIT itself does not own its buildings directly. Instead, it serves as the general partner of an operating partnership (the “OP”), and the operating partnership owns the real estate. The REIT’s shareholders own shares of the REIT; the REIT owns a controlling interest in the OP.
This umbrella design exists largely because of Section 721. Because the OP is a partnership, property owners can contribute real estate to it in exchange for OP units without triggering gain. If they contributed property directly to the REIT—a corporation for tax purposes—the nonrecognition rules of Section 721 would not apply.
OP units are designed to be economically equivalent to REIT shares: they typically receive the same distributions and are convertible, one-for-one, into REIT common shares (or cash, at the REIT’s election). That conversion right is what eventually connects the investor to liquidity—but exercising it has tax consequences, covered below.
The two paths into a 721 exchange
Direct contribution. An owner of institutional-quality property negotiates directly with a REIT to contribute the asset to its operating partnership in exchange for OP units. This is how many REITs have historically acquired portfolios from private owners. It is generally available only for properties a REIT actually wants—size, asset class, and location all matter.
The DST-to-UPREIT path. This is the route most individual investors encounter. It works in stages:
- The investor completes a standard 1031 exchange into a DST sponsored by a firm affiliated with a REIT.
- The DST holds the property for a period of time.
- The REIT’s operating partnership later acquires the DST’s property, and investors receive OP units in exchange for their DST interests under Section 721.
The result: the investor has traveled from a directly owned building, through a DST, into a diversified REIT operating partnership—deferring gain at each step.
A caution that belongs in any honest description of this path: the tax analysis of the 1031-then-721 sequence depends on the investor’s intent to hold the DST interest as an investment, judged on facts and circumstances. No statute or ruling sets a minimum holding period between the 1031 exchange and the 721 contribution. Sponsors and tax advisers commonly build a seasoning period into these programs as a matter of prudence, but the appropriate length is a judgment call for a qualified tax adviser, not a bright-line rule. Any specific number you encounter in marketing materials is a convention, not law.
Tax treatment: what’s deferred, what’s triggered
At contribution. Under §721(a), no gain or loss is recognized when the property (or DST interest) is exchanged for OP units. The investor’s basis in the units generally carries over from the contributed property, preserving the deferred gain inside the units. Two exceptions worth knowing exist even at this stage:
- The investment company exception (§721(b)). Contributions to a partnership that would be treated as an investment company can trigger gain. REIT operating partnerships are structured with this in mind, but it is why these transactions are lawyer-reviewed rather than DIY.
- Disguised sale and debt-shift issues. Under §707 and its regulations, contributions paired with distributions can be recharacterized as sales. Similarly, if the partnership’s assumption of debt reduces the investor’s share of liabilities below their basis, gain can be recognized. Debt-financed properties require careful structuring.
While holding OP units. Distributions are reported on a Schedule K-1 (the OP is a partnership), not the Form 1099 a REIT shareholder receives. Unitholders continue to defer the built-in gain and may benefit from depreciation allocations, subject to the partnership’s allocation rules.
At conversion. Exchanging OP units for REIT shares or cash is generally a taxable event—the deferred gain comes due. This is the structural trade-off of the 721: liquidity exists, but using it ends the deferral. Investors can convert in stages to spread recognition across tax years.
At death. Like other appreciated assets, OP units held at death may receive a stepped-up basis under IRC §1014, potentially eliminating the deferred gain for heirs. For estate-planning-motivated investors, this is often the point of the whole structure: defer through life, step up at death.
721 vs. 1031: the real comparison
| 1031 exchange | 721 exchange | |
|---|---|---|
| What you end up owning | Real property (or a DST interest treated as real property) | OP units — a security, not real estate |
| Can you exchange again later? | Yes — 1031s can be chained indefinitely | No — OP units are not 1031-eligible |
| Diversification | One property (or one DST portfolio) per exchange | Interest in the REIT’s entire portfolio |
| Liquidity | Illiquid until the property/DST sells | Convertible to REIT shares — but conversion is taxable |
| Ongoing management burden | None in a DST; substantial if direct | None |
| Income reporting | Direct: rental schedules. DST: generally grantor-trust reporting | Schedule K-1 |
| Deadlines | 45-day identification / 180-day closing | None — negotiated transaction |
The single most important line in that table is the second one. A 1031 keeps the deferral engine running: the investor can exchange again and again, and each exchange resets nothing—the gain rides along until death. A 721 ends the chain. It trades future exchange flexibility for diversification and eventual liquidity. For an investor who intends to hold until death anyway, that trade is often attractive. For an investor who may want to redeploy into other real estate later, it is usually the wrong tool.
Where the risks actually live
You become a REIT investor. After the 721, returns depend on the REIT’s portfolio, management, leverage, and fee structure—not on the building you used to own. Evaluating the REIT is the diligence; the exchange mechanics are secondary.
Valuation of the contribution. The number of OP units received depends on the negotiated or program-determined value of the contributed property or DST interest. In sponsored DST-to-UPREIT programs, the sponsor sits on both sides of that transaction, which is a structural conflict of interest disclosed in offering documents and worth reading closely.
The conversion tax is real. Investors sometimes discover the deferral-ending nature of conversion only when they want cash. The plan for eventual liquidity—partial conversions, timing, estate strategy—should exist before the 721, not after.
Program terms vary. Lock-up periods, conversion mechanics, distribution policies, and the REIT’s right to deliver cash instead of shares all live in the partnership agreement and the offering documents. There is no standard 721; there is only the one in front of you.
Who this structure tends to fit
The 721 exchange is generally aimed at investors who have finished actively investing in real estate: owners who want to stop managing property, diversify a concentrated position, keep deferring gain, and set up a clean estate outcome. It fits poorly for investors who want to stay in the exchange game, who need near-term liquidity without a tax bill, or who are uncomfortable holding a security whose value moves with a REIT’s fortunes rather than a specific building’s.
As with everything in this corner of the tax code, the structure is unforgiving of improvisation. The investors who do well with 721 exchanges are the ones who involve a qualified tax adviser before the preceding 1031, not after the OP units arrive.
This guide is educational and is not tax or investment advice. Consult a qualified tax professional before undertaking any exchange.
Frequently Asked Questions
Is a 721 exchange the same as a 1031 exchange?
No. A 1031 exchange defers gain by swapping real property for other real property. A 721 exchange defers gain by contributing property to a partnership—typically a REIT’s operating partnership—in exchange for partnership units. After a 721, the investor holds securities, not real estate, and cannot do another 1031 with that position.
Can you do a 1031 exchange after a 721 exchange?
No. Operating partnership units are not real property, so they are not eligible for a subsequent 1031 exchange. The 721 is generally the last stop in a tax-deferral chain.
Is converting OP units to REIT shares taxable?
Yes, generally. Exchanging or redeeming OP units for REIT common shares (or cash) is typically a recognition event for the deferred gain. Many investors hold OP units until death, when heirs may receive a stepped-up basis under IRC §1014.
How long must you hold a DST before a 721 rollup?
No statute sets a fixed holding period. The tax analysis turns on facts and circumstances, including intent at the time of the exchange. Sponsors and tax advisers commonly build in a seasoning period, but the length is a matter of professional judgment, not a bright-line rule.
Sources
- IRC §721(a) — nonrecognition on contribution of property to a partnership in exchange for a partnership interest
- IRC §721(b) — investment company exception
- IRC §707 and Treas. Reg. §1.707-3 — disguised sale rules
- IRC §1031 — like-kind exchanges (real property only after the Tax Cuts and Jobs Act of 2017)
- IRC §1014 — basis of property acquired from a decedent
- Rev. Rul. 2004-86 — treatment of Delaware statutory trust interests
