An operating partnership (OP) is the limited partnership through which a REIT structured as an UPREIT actually holds and operates its assets — the REIT itself owning a controlling interest in the OP rather than the properties directly. OP units, the partnership’s ownership interests, are the currency that makes tax-deferred property contributions possible.
Why the OP layer exists
The UPREIT architecture — REIT on top, OP below, properties inside the OP — exists for one dominant reason: Section 721. Contributing appreciated property to a partnership is tax-deferred, while selling it (or contributing directly to a corporation-taxed REIT) is not; so property owners can exchange real estate for OP units without triggering gain — the 721 exchange — receiving interests economically equivalent to REIT shares (matching distributions, typically convertible 1:1 into shares or cash after a holding period, with conversion as the taxable moment). The structure powers the acquisition currency of the listed REIT industry and the DST-to-REIT pipeline in the 1031 market. OP-level mechanics worth knowing: unitholders are partners receiving K-1s (unlike REIT shareholders’ 1099s), tax-protection agreements often restrict the REIT from selling contributed properties for negotiated periods (guarding contributors’ deferred gains — and occasionally constraining portfolio management), and the REIT’s public financials consolidate the OP, with noncontrolling OP interests as the visible trace of the structure. For advisors, the OP is mostly encountered as the destination of a client’s 721 transaction — the point where direct property ownership converts into diversified, professionally managed, but no-longer-1031-exchangeable form.
Related terms
UPREIT · 721 Exchange · REIT · Delaware Statutory Trust (DST) · Schedule K-1
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