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An Umbrella Partnership Real Estate Investment Trust, called an UPREIT, is a structure that allows a property owner to transfer appreciated real estate into a Real Estate Investment Trust's operating partnership in exchange for operating partnership units, called OP units, without triggering an immediate capital gains tax. You contribute the property to the partnership under Section 721 of the Internal Revenue Code, receive OP units equal in value to the property's fair market value, and defer the capital gains tax until you sell or convert those units. The UPREIT structure was first used by Taubman Centers in its 1992 IPO and has been a cornerstone of the public REIT industry ever since.
Think of an UPREIT contribution as a like-kind exchange on steroids: you swap a single property for a diversified ownership stake in a professionally managed portfolio while deferring the tax.
In an UPREIT, the public REIT serves as the sole general partner of an operating partnership. The operating partnership owns all the real estate assets. When a property owner contributes a building to the operating partnership, they receive limited partnership units rather than REIT shares. Those OP units receive the same quarterly distributions as REIT shareholders, but the owner does not pay capital gains tax on the contribution because a Section 721 exchange of property for a partnership interest is not a taxable event.
After a holding period specified in the operating partnership agreement, typically one to two years, the OP unit holder can convert those units into publicly traded REIT shares. The conversion is a taxable event at that time, but the owner controls the timing. This flexibility allows owners to convert gradually over multiple tax years, managing the annual capital gains liability through tax-loss harvesting or charitable gifting strategies.
| UPREIT (Section 721) | 1031 Exchange | |
|---|---|---|
| Tax Deferral | Yes, deferred until OP unit sale or conversion | Yes, deferred until replacement property is sold |
| Replacement Property | No; you receive partnership units | Yes; must acquire like-kind property within strict deadlines |
| Management Burden | REIT manages the portfolio | Owner retains management unless a DST is used |
| Diversification | Immediate; units represent a diversified REIT portfolio | Limited to specific replacement properties identified |
| Liquidity | Convertible to publicly traded REIT shares | Illiquid until the replacement property is sold |
From the REIT's perspective, OP units give it a competitive advantage over all-cash buyers when acquiring properties. A REIT can offer a property owner OP units worth the same dollar value as a cash purchase, but the owner receives the additional benefit of tax deferral. This makes an OP unit offer more valuable to a highly appreciated property owner than a cash offer of the same nominal amount, because the after-tax proceeds from the cash sale would be meaningfully less.
As of the end of 2025, there were 155 equity REITs publicly traded in the United States with a combined market capitalization of approximately $1.4 trillion. Most of the largest publicly traded REITs, including Prologis, Realty Income, and Equity Residential, use the UPREIT structure.
If you hold OP units until death rather than converting them, your heirs may receive a stepped-up basis on the units under current federal tax law, eliminating the embedded capital gain entirely. This makes the UPREIT a powerful estate planning tool for owners of highly appreciated real estate who do not need immediate liquidity but want to divest active management responsibilities while preserving all the embedded appreciation for their heirs.
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