The 721 exchange offers powerful benefits — diversification, liquidity, passive income, and estate planning — but it comes with a critical catch that every investor must understand before proceeding: it's generally a one-way door. Once you contribute your property to a REIT's operating partnership and receive OP units, you've left the world of direct real estate, and you generally can't get back in tax-free. Specifically, you lose 1031 eligibility — because OP units are a partnership interest (not like-kind real property), you can't do a 1031 exchange with them. This means the 721 exchange is a commitment to REIT ownership, not a reversible step. For the right investor (ready to commit), this is fine — even the intended outcome. But it's a consequence you must understand fully before contributing. This guide explains the one-way door: what it means, why it happens, what you can do after, the trade-off, and when it's acceptable.
What "one-way door" means
The 'one-way door' metaphor captures the essence of the 721 exchange's irreversibility: you can go through it (from direct property into REIT ownership), but you can't come back through tax-free. Once you contribute your property for OP units, you've entered REIT ownership, and the tax-deferred path back into direct real estate (via a 1031 exchange) is closed. So the 721 exchange is a one-directional transition — into REIT ownership, not back out (without triggering tax).
This contrasts sharply with the 1031 exchange, which keeps doors open. After a 1031, you hold real property, and you can do another 1031 with it (and another, and another), continuing to reposition among real estate indefinitely. The 1031 is a revolving door — you can keep moving among properties. The 721, by contrast, is a one-way door into REIT ownership, after which the 1031 option is gone.
The practical meaning is that doing a 721 exchange is a commitment. You're not making a reversible move or a temporary positioning; you're transitioning into REIT ownership as a (generally) permanent endpoint. You can still manage your OP units (hold, convert to shares, etc.), but you can't tax-free reverse back into direct real estate. What 'one-way door' means — the 721 exchange being a one-directional, generally irreversible transition into REIT ownership, after which the tax-free path back into direct real estate (1031) is closed — is the critical concept every 721 investor must grasp. Unlike the 1031's revolving door (keep exchanging real property), the 721 is a one-way door (into REIT ownership, no tax-free return). Understanding this metaphor sets up why it happens and what it means for your decision. The one-way nature is the defining caveat of the 721 exchange.
Why OP units can't be 1031'd
The reason you can't 1031 OP units comes down to what a 1031 exchange requires: like-kind real property. Section 1031 applies to exchanges of real property held for investment or productive use for other like-kind real property. OP units, however, are not real property — they're a partnership interest (an interest in the operating partnership). So OP units don't qualify as the kind of property that can be exchanged in a 1031.
This is reinforced by the fact that Section 1031 specifically excludes partnership interests from like-kind exchange treatment. The tax code provides that interests in a partnership don't qualify as like-kind property for Section 1031 purposes. So even setting aside the real-property requirement, partnership interests (like OP units) are explicitly outside 1031's scope. There's no way to structure a 1031 exchange of OP units.
The result is that once your property has become OP units (a partnership interest), it's no longer 1031-eligible — you can't exchange the units for real property (or anything else) under Section 1031. To get back into direct real estate, you'd have to dispose of the units in a taxable way (e.g., convert to shares and sell, triggering the gain), then buy real estate with the after-tax proceeds — not a tax-free 1031. Why OP units can't be 1031'd — because they're a partnership interest, not like-kind real property, and partnership interests are specifically excluded from Section 1031 — is the technical basis for the one-way door. The units simply aren't the kind of property a 1031 can exchange. Understanding why clarifies that the one-way nature isn't a quirk but a fundamental consequence of OP units being a partnership interest. This is why the 721 exchange closes the 1031 door.
OP units are a partnership interest, not like-kind real property — and Section 1031 specifically excludes partnership interests. So once your property becomes OP units, the 1031 door is closed.
What you can and can't do after
After a 721 exchange, understanding what you can and can't do clarifies your options. What you can do: hold the OP units (continuing the deferral, earning distributions), convert the units to REIT shares (often one-for-one, after a holding period, but triggering the deferred gain), redeem units for cash in some structures (also triggering the gain), and hold the units until death (when the step-up can erase the gain for your heirs). So you have meaningful options for managing your units — hold, convert, or pass to heirs.
What you can't do (tax-free): you can't 1031 the OP units into real property (they're not 1031-eligible), so you can't tax-free reverse back into direct real estate. You also can't avoid the tax if you want liquidity by converting to shares (conversion triggers the gain). So the things you can't do are the tax-free return to direct real estate and tax-free liquidity (beyond the deferral while holding).
The net picture is that your post-721 options are within the REIT-ownership world (hold units, convert to shares, pass to heirs) — you can't tax-free exit back to direct real estate. This is the consequence of the one-way door: your flexibility is now within REIT ownership, not back into direct property. What you can and can't do after a 721 exchange — you can hold, convert (taxable), redeem (taxable), or pass to heirs (step-up); you can't tax-free 1031 back into direct real estate — defines your post-721 options. Understanding these options shows that you retain meaningful choices (within REIT ownership) but lose the tax-free return to direct property. Knowing what you can and can't do helps you plan your post-721 strategy realistically, working within the REIT-ownership options the one-way door leaves you.
The trade-off: giving up 1031 flexibility
The one-way door represents a real trade-off: you give up 1031 flexibility in exchange for the 721's benefits. The 1031 flexibility you give up is significant — the ability to keep exchanging real property, repositioning among properties, deferring indefinitely while staying in direct real estate, and adapting your holdings as your goals change. This flexibility is valuable, and the 721 exchange forecloses it.
In exchange, you gain the 721's benefits: diversification (the REIT's portfolio), liquidity (convertible units), passive ownership (no management), and estate planning (the step-up and divisibility). So the trade-off is the 1031's flexibility (staying in direct real estate, able to keep exchanging) versus the 721's benefits (diversification, liquidity, passivity, estate planning). You're trading one set of advantages for another.
Whether this trade-off is worthwhile depends on what you value. If you value the flexibility to keep exchanging real property (staying an active direct investor), giving it up is a real cost. If you value the 721's benefits (and are ready to commit to REIT ownership as an endpoint), giving up the flexibility is acceptable — you don't need it anymore. So the trade-off's worth depends on your goals and stage. The trade-off — giving up the 1031's flexibility (continued exchanging in direct real estate) in exchange for the 721's benefits (diversification, liquidity, passivity, estate planning) — is the essence of the one-way door decision. Understanding the trade-off honestly (what you give up versus what you gain) is essential to deciding whether the 721 exchange is right for you. The one-way door isn't inherently good or bad; it's a trade-off whose value depends on whether you'd rather keep the 1031 flexibility or commit to the 721's benefits.
When the one-way move is acceptable
The one-way move is acceptable — even desirable — in specific situations where you're ready to commit to REIT ownership as your endpoint. The clearest is when you're transitioning out of active real estate for good — retiring from property management, wanting diversification and passivity, and not intending to return to direct real estate. For such an investor, the loss of 1031 flexibility is irrelevant (they don't want to keep exchanging), so the one-way door is fine.
It's also acceptable when the 721's benefits are exactly what you want and the 1031 flexibility isn't. An investor focused on estate planning (the step-up and divisibility), diversification (the REIT portfolio), and liquidity (convertible units) — who values these over the ability to keep trading real estate — finds the one-way move acceptable, because they're choosing the 721's benefits deliberately. The endpoint (REIT ownership) is their goal.
Conversely, the one-way move is not acceptable for investors who want to keep their options open — who may want to reposition in direct real estate, acquire specific properties, or retain control and flexibility. For them, giving up 1031 eligibility is too costly. So the one-way move suits those committing to REIT ownership, not those wanting continued direct-real-estate flexibility. When the one-way move is acceptable — for investors ready to commit to REIT ownership as their endpoint (retiring from active real estate, valuing the 721's benefits over 1031 flexibility) — versus when it's not (for those wanting continued direct-real-estate flexibility) — is the key judgment. Understanding when it's acceptable helps you assess whether the one-way door fits your situation. For the right investor (committing to REIT ownership), the one-way move is acceptable or even ideal; for others, it's a dealbreaker. Knowing which you are is essential.
- The 721 exchange is generally a one-way door — once you hold OP units, you lose 1031 eligibility and can't tax-free return to direct real estate.
- OP units can't be 1031'd because they're a partnership interest (not like-kind real property), which Section 1031 specifically excludes.
- After a 721, you can hold, convert to shares (taxable), or pass to heirs (step-up) — but can't tax-free reverse into direct property.
- The trade-off (giving up 1031 flexibility for the 721's benefits) is acceptable for investors committing to REIT ownership, not for those wanting continued flexibility.
Planning around the one-way nature
Given the one-way nature, planning before a 721 exchange is essential to ensure it's the right move. The first planning principle is to be certain before committing — because the move is generally irreversible (tax-free), you should be confident that REIT ownership is your intended endpoint, not a tentative or temporary position. This certainty comes from carefully assessing your goals (diversification, liquidity, passivity, estate planning) against the loss of flexibility.
A second planning consideration is to potentially stage your transition or keep some assets in direct real estate. You don't have to put all your real estate into a 721 exchange — you could 721 some assets (committing those to REIT ownership) while keeping others in direct real estate (retaining 1031 flexibility for those). This partial approach lets you gain some 721 benefits while keeping some direct-real-estate flexibility, hedging the one-way commitment.
A third consideration is to understand and use the options the 721 leaves you (holding, converting, the step-up) to manage your REIT ownership effectively, since you can't return to direct real estate. Planning your liquidity (gradual conversion), income (holding for distributions), and estate strategy (holding for the step-up) within REIT ownership maximizes the benefits. Planning around the one-way nature — being certain before committing, potentially staging the transition or keeping some assets in direct real estate, and planning to use the REIT-ownership options effectively — helps you approach the 721 exchange wisely given its irreversibility. Because the move is generally permanent, thoughtful planning (certainty, possible partial transition, and optimizing your REIT ownership) ensures the one-way door leads where you want. Understanding how to plan around the one-way nature lets you make the 721 exchange a deliberate, well-considered transition rather than an irreversible mistake.
How Baker 1031 helps you navigate the one-way door
Baker 1031 Investments helps investors navigate the 721 exchange's one-way door — ensuring you fully understand that it's a generally irreversible commitment to REIT ownership (with the loss of 1031 eligibility) before you proceed, and assessing whether that commitment fits your goals. We help you weigh the trade-off (1031 flexibility versus the 721's benefits) honestly, and consider planning approaches (like keeping some assets in direct real estate) to balance the commitment.
REIT units and related securities are offered through the broker-dealer, Aurora Securities, Inc. (member FINRA/SIPC), and any recommendation follows a suitability review — the 721 exchange involves securities (OP units), and the one-way commitment is part of the suitability assessment. We coordinate with your CPA and advisors to ensure you understand the consequences. Our role is to help you make the 721 exchange decision with full understanding of the one-way door — so if you proceed, you're deliberately committing to REIT ownership (which suits the right investor), not stumbling into an irreversible move you didn't intend. We ensure you cross the one-way door knowingly and only if it's right for you.
Frequently Asked Questions
Why is the 721 exchange called a 'one-way door'?
Because it's generally a one-directional, irreversible transition: you can go through it (from direct property into REIT ownership), but you can't come back through tax-free (into direct real estate). Once you contribute your property for OP units, you lose 1031 eligibility — you can't tax-free exchange the units back into real property. Unlike the 1031's revolving door (keep exchanging real property), the 721 is a one-way door into REIT ownership. It's a commitment, not a reversible move, which every investor must understand before proceeding.
Why can't I do a 1031 exchange with OP units?
Because OP units are a partnership interest, not like-kind real property — and Section 1031 requires real property and specifically excludes partnership interests from like-kind exchange treatment. So OP units simply aren't the kind of property a 1031 can exchange. Once your property has become OP units (a partnership interest), it's no longer 1031-eligible. To get back into direct real estate, you'd have to dispose of the units taxably (e.g., convert to shares and sell, triggering the gain), not do a tax-free 1031. The units' nature closes the 1031 door.
What can I do after a 721 exchange?
You can hold the OP units (continuing the deferral, earning distributions), convert them to REIT shares (often one-for-one after a holding period, but triggering the deferred gain), redeem units for cash in some structures (also triggering the gain), or hold the units until death (when the step-up can erase the gain for heirs). So you have meaningful options within REIT ownership — hold, convert, redeem, or pass to heirs. What you can't do is tax-free reverse back into direct real estate via a 1031. Your flexibility is within REIT ownership.
Can I ever get back into direct real estate after a 721?
Not tax-free — to return to direct real estate, you'd have to dispose of your OP units in a taxable way (convert to REIT shares and sell, or redeem for cash, triggering the deferred gain), then buy real estate with the after-tax proceeds. So returning to direct real estate is possible but not tax-free (you'd recognize the deferred gain). There's no 1031 path back, since OP units aren't 1031-eligible. This is why the 721 is a one-way door — the return to direct real estate requires triggering the tax you'd been deferring.
What's the trade-off of the one-way door?
You give up the 1031's flexibility (the ability to keep exchanging real property, repositioning among properties, staying in direct real estate) in exchange for the 721's benefits (diversification, liquidity, passive ownership, estate planning). So it's a trade-off: continued direct-real-estate flexibility versus the 721's benefits. Whether it's worthwhile depends on what you value — if you want the 721's benefits and are ready to commit to REIT ownership, giving up the flexibility is acceptable; if you value continued exchanging flexibility, the trade-off may not be worth it.
When is the one-way move acceptable?
When you're ready to commit to REIT ownership as your endpoint — retiring from active real estate, valuing diversification, liquidity, passivity, and estate planning over continued exchanging flexibility, and not intending to return to direct real estate. For such an investor, the loss of 1031 flexibility is irrelevant (they don't want to keep exchanging), so the one-way door is fine or even ideal. It's not acceptable for investors who want to keep their options open for continued direct-real-estate repositioning and control.
Do I have to put all my property into a 721 exchange?
No — you can do a partial transition, putting some assets into a 721 exchange (committing those to REIT ownership) while keeping others in direct real estate (retaining 1031 flexibility for those). This lets you gain some 721 benefits (diversification, passivity for the contributed assets) while keeping some direct-real-estate flexibility. So you don't have to commit everything; a partial approach can balance the one-way commitment with retained flexibility. This is one way to plan around the one-way nature — hedge by keeping some assets in direct real estate.
Is the one-way door a reason not to do a 721 exchange?
Not necessarily — it's a reason to be sure the 721 exchange fits your goals before committing. For investors ready to transition into REIT ownership (and not needing continued 1031 flexibility), the one-way door is acceptable or even the intended outcome. For investors wanting to keep exchanging real property, it's a dealbreaker. So the one-way door isn't inherently disqualifying; it's a critical consideration that determines whether the 721 fits you. Understanding it helps you decide — it's a reason for careful consideration, not automatic avoidance.
Can I convert OP units to shares and then 1031?
No — converting OP units to REIT shares gives you REIT shares (a security), not real property, and it triggers the deferred gain (taxable). REIT shares aren't 1031-eligible either (they're a security, not real property). So converting doesn't open a 1031 path; it just triggers the tax and gives you shares. To get into direct real estate, you'd sell the shares (after paying the tax on conversion) and buy real estate with the proceeds — not a 1031. There's no route from OP units back to a 1031 exchange.
How should I plan around the one-way nature?
Be certain REIT ownership is your intended endpoint before committing (since it's generally irreversible tax-free), consider staging your transition or keeping some assets in direct real estate (to retain some 1031 flexibility), and plan to use the REIT-ownership options (holding, converting, the step-up) effectively. Because the move is generally permanent, thoughtful planning ensures the one-way door leads where you want. Approach the 721 exchange as a deliberate, well-considered commitment, not a tentative move, given its irreversibility.
Does the step-up at death still apply despite the one-way nature?
Yes — the one-way nature (no 1031 out) doesn't affect the step-up: if you hold your OP units until death, your heirs generally receive a stepped-up basis that can erase the deferred gain. So even though you can't 1031 out, you can still reach the ultimate tax benefit (the step-up) by holding until death. In fact, holding until death is a common 721 strategy — you commit to REIT ownership (one-way), hold the units for life (deferral, income), and pass them to heirs with the step-up. The one-way nature and the step-up coexist.
Is a 1031 better than a 721 because it's not one-way?
Not necessarily — the 1031's continued flexibility is an advantage for investors who want to keep exchanging real property, but the 721's benefits (diversification, liquidity, passivity, estate planning) are advantages the 1031 doesn't offer. So neither is universally better; they suit different goals. The 1031's non-one-way nature is better for those wanting flexibility; the 721's benefits are better for those ready to commit to REIT ownership. The one-way door is a trade-off, not simply a disadvantage — it depends on whether you value flexibility or the 721's benefits.
Glossary
- One-Way Door
- The 721 exchange's generally irreversible transition into REIT ownership.
- 1031 Eligibility
- The ability to do a 1031 exchange, lost once you hold OP units.
- Partnership Interest
- What OP units are — excluded from 1031 like-kind treatment.
- Like-Kind Real Property
- What a 1031 requires; OP units don't qualify.
- Irreversible
- The generally permanent (tax-free) nature of the 721 move.
- Revolving Door (1031)
- The 1031's ability to keep exchanging real property.
- Conversion
- Exchanging OP units for shares, taxable and not a 1031.
- REIT Shares
- A security (not real property), also not 1031-eligible.
- Endpoint
- REIT ownership as the 721's generally permanent destination.
- Partial Transition
- 721-ing some assets while keeping others in direct real estate.
- Flexibility Trade-Off
- Giving up 1031 flexibility for the 721's benefits.
- Step-Up in Basis
- The death-time reset, still available despite the one-way nature.
- Direct Real Estate
- Property ownership you can't tax-free return to after a 721.
- Commitment
- The deliberate, generally permanent choice of REIT ownership.
- Suitability Review
- The assessment including the one-way commitment's fit for you.
- Built-In Gain
- The deferred gain triggered if you exit the units taxably.
Sources & References
- Cornell Legal Information Institute. 26 U.S. Code § 1031 — (excludes partnership interests)
- Cornell Legal Information Institute. 26 U.S. Code § 721 — Nonrecognition of gain or loss on contribution
- IRS. Like-Kind Exchanges Under IRC Section 1031 (FS-2008-18)
- U.S. Securities and Exchange Commission. Investor.gov — Real Estate Investment Trusts (REITs)
Disclosures
This article is published by Baker 1031 Investments, LLC for general educational purposes for accredited investors and is not an offer to sell or a solicitation of an offer to buy any security, nor is it tax, legal, accounting, or investment advice or a recommendation. Any securities offering is made solely through a sponsor’s private placement memorandum (PPM) following a suitability determination. Securities offered through Aurora Securities, Inc. (ASI), member FINRA / SIPC; Baker 1031 Investments is independent of ASI.
Oil & gas mineral and royalty interests and DST programs are speculative, illiquid securities sold only to verified accredited investors and involve substantial risk, including possible loss of principal, commodity-price and production-decline risk, lack of control, and the risk that an intended 1031 exchange fails to qualify for tax deferral. Whether a particular interest qualifies as like-kind real property is a fact-specific legal determination that varies by state and by the terms of the instrument. Tax results depend on your individual circumstances. Consult your own CPA and attorney before acting. Past performance does not guarantee future results.
