The difference between an UPREIT and a DownREIT comes down to how the partnership is built underneath the REIT. An UPREIT (Umbrella Partnership Real Estate Investment Trust) runs every contributed property through one master Operating Partnership, so your units represent a slice of the entire portfolio. A DownREIT creates a separate partnership for each deal or group of properties, so your units track only the assets inside that smaller pool. Both let you swap real estate for partnership units and defer capital gains tax under Section 721 of the Internal Revenue Code, but they split on diversification, administrative weight, and how much you can negotiate at the table.
The Core Structural Difference
An UPREIT puts one Operating Partnership at the center of everything. The publicly traded REIT sits on top as general partner and majority owner. Every property the REIT acquires flows into that single entity, which holds legal title to the whole portfolio. When you contribute a building, you hand the deed to the Operating Partnership and receive units representing your share of all the properties inside it.
A DownREIT inverts that picture. The REIT might own some buildings directly on its own balance sheet while holding interests in a dozen distinct downstream partnerships, each with its own operating agreement, its own partners, and its own terms. Contribute to a DownREIT and you enter one of those smaller partnerships, which holds your building and perhaps a few others, but not the REIT’s full portfolio.
What You Get in an UPREIT
UPREITs reward owners who want diversification and simplicity. Your units represent a slice of hundreds or thousands of properties across different markets and property types. If one building underperforms, the rest of the portfolio absorbs the hit. The Operating Partnership files one tax return, keeps one set of books, and applies a uniform set of management policies. That administrative efficiency is one reason UPREITs dominate the public REIT market.
The trade-off is uniformity. Your economic interest is tied to the performance of the whole portfolio, not just the property you contributed. The master partnership agreement governs everyone, so you negotiate inside a framework shaped by prior contributors rather than drafting bespoke terms from scratch. Side letters or supplemental agreements can carve out specific protections, but the baseline is a shared structure.
What You Get in a DownREIT
A DownREIT keeps your deal separate. If you own a high-performing asset and believe it will outpace the REIT’s broader portfolio, a DownREIT lets you keep that upside rather than averaging it into the pool. You also have more leverage over the partnership agreement because your deal stands alone. The REIT can offer you different economics, governance rights, or tax protections without touching anyone else’s deal.
REITs sometimes prefer the DownREIT model when they already own properties directly and want to add contributed assets without restructuring existing holdings. The cost on both sides is organizational overhead. Each partnership needs its own tax filings, bank accounts, and compliance work, which multiplies as the REIT adds more deals.
The Tax Deferral Both Structures Share
The core benefit in either structure comes from Section 721, which says no gain or loss is recognized when you contribute property to a partnership in exchange for a partnership interest.1Office of the Law Revision Counsel. 26 U.S. Code 721 – Nonrecognition of Gain or Loss on Contribution This is often called a 721 exchange. Unlike a Section 1031 like-kind exchange, there is no 45-day identification window and no 180-day completion deadline.2Office of the Law Revision Counsel. 26 U.S. Code 1031 – Exchange of Real Property Held for Productive Use or Investment You contribute the property, receive your units, and the deal closes.
Your new units carry a carryover basis equal to your original tax basis in the property you surrendered.3eCFR. 26 CFR Part 1 – Contributions to a Partnership Buy a building for $500,000, contribute it when it’s worth $3 million, and your units still have a $500,000 basis. The $2.5 million of built-in gain stays deferred. For high-income taxpayers, that deferred bill can reach 20 percent in federal capital gains tax plus 3.8 percent in net investment income tax.4Internal Revenue Service. Net Investment Income Tax The gain becomes taxable when you redeem or convert your units, or when the partnership sells the contributed property.
Where the Structures Diverge on Tax Mechanics
Two parts of the tax code behave differently depending on which structure you pick.
The first is debt allocation. Under Section 752, when the partnership assumes your mortgage, the reduction in your personal liabilities is treated as a cash distribution to you.5Office of the Law Revision Counsel. 26 U.S. Code 752 – Treatment of Certain Liabilities If that deemed distribution exceeds your basis in the partnership interest, you owe tax immediately, which wipes out the deferral. The fix is making sure you are allocated enough of the partnership’s total debt to offset the mortgage that shifted off your shoulders. In an UPREIT, with a large and heavily leveraged portfolio, there is plenty of debt to allocate. In a DownREIT, where your partnership holds fewer assets and carries less total debt, structuring that allocation is trickier.
The second is depreciation. Section 704(c) requires the partnership to allocate income, gain, loss, and deductions so the built-in gain stays with you rather than shifting to other partners.6Office of the Law Revision Counsel. 26 U.S. Code 704 – Partner’s Distributive Share You receive less depreciation on the contributed property than other partners would on a dollar-for-dollar basis, because the code treats you as already having taken some of that benefit through your low basis. In a DownREIT, these allocations stay cleaner because each partnership holds fewer properties and fewer partners. In an UPREIT, dozens of contributors with varying basis-to-value gaps sit inside one entity, and the 704(c) math gets significantly more complex.
Tax Protection Agreements in Each Structure
Because your deferred gain becomes taxable if the partnership sells the contributed property, contributors negotiate tax protection agreements that restrict disposal of the asset for a set period. These agreements typically run five to ten years and may also require the partnership to maintain enough allocated debt to prevent a deemed distribution that triggers gain.7U.S. Securities and Exchange Commission. Tax Protection Agreement If the REIT breaks the agreement and sells early, the partnership owes you an indemnity payment to cover the resulting tax bill.
In a DownREIT, those terms are written into each individual partnership agreement, so the REIT can offer different protection periods to different contributors. In an UPREIT, the Operating Partnership’s agreement governs everyone, and contributor-specific protections live in side letters attached to the master deal. Contributors with higher-value properties or more built-in gain tend to have more leverage either way.
Liquidity and Voting Trade-Offs
Partnership units are not publicly traded in either structure. Liquidity comes from a redemption right in the partnership agreement. After a lock-up period (commonly around 12 months, though negotiable), you can request that the partnership redeem your units. The REIT then decides whether to pay cash based on the current market value of its shares, or to swap your units for REIT common shares on a one-for-one basis. Either path triggers the deferred capital gain, so the tax bill comes due the moment you redeem, regardless of what you do with the shares afterward.
Distributions differ by structure. In an UPREIT, each common unit is designed to mirror a REIT common share economically, so you receive distributions matching the dividends declared on the corresponding REIT shares. In a DownREIT, distributions flow from the specific partnership you belong to, so your payout depends on that partnership’s cash flow. Some DownREIT contributors negotiate a minimum distribution floor as part of their deal terms.
Voting rights are where contributors feel the loss of control most. As a limited partner, you have no vote at the REIT level and very limited voting rights at the partnership level. Your consent is generally required only for amendments that would materially hurt your economic interests, such as changes to distribution formulas or redemption rights. In a merger or sale, most partnership agreements do not give you a separate veto so long as you receive the same per-unit value that REIT shareholders receive per share.
The Estate Planning Payoff
The strongest reason to use either structure shows up at death. Under Section 1014, property acquired from a decedent receives a basis equal to its fair market value at the date of death.8Office of the Law Revision Counsel. 26 U.S. Code 1014 – Basis of Property Acquired From a Decedent When your heirs inherit your partnership units, their basis resets to whatever the units are worth at that moment. The built-in gain you deferred when you contributed the property, potentially decades of appreciation, vanishes permanently.
That outcome is the same under either structure. You defer the gain during your lifetime, collect distributions, enjoy diversification in an UPREIT or concentrated upside in a DownREIT, and your heirs receive the units free of the embedded tax liability. Selling for cash instead means paying up to 23.8 percent in combined federal capital gains and net investment income tax, investing what’s left, and leaving your heirs a smaller pot.
Which One Fits Your Situation
Pick an UPREIT if you want broad exposure, simpler administration, and a well-worn path to liquidity. Your single building becomes a slice of a diversified portfolio, and the REIT handles everything on uniform terms. This is the structure most large publicly traded REITs use.
Pick a DownREIT if you want to preserve your connection to the specific property, negotiate bespoke terms, or avoid the messy depreciation allocations that arise when a high-value, low-basis property enters a large partnership. DownREITs are more common in private or smaller REIT transactions where deal-by-deal flexibility matters more than scale.
Whichever you choose, the tax deferral, the debt allocation rules, and the estate planning endgame work the same way. The differences are about organizational plumbing, not tax law. Get the partnership agreement right, negotiate a strong tax protection period, and understand that your units are illiquid until the lock-up expires.