Now Available: The Opportunity Zones Playbook
What is Qualified Opportunity Zone Business Property (QOZBP)?
Qualified Opportunity Zone Business Property (QOZBP) is one of three categories of Qualified Opportunity Zone Property (QOZP) — the universe of assets a Qualified Opportunity Fund (QOF) must hold to satisfy its 90% investment requirement. QOZBP is the most detailed and most commonly encountered of the three categories, representing the tangible property through which QOFs and Qualified Opportunity Zone Businesses (QOZBs) deploy capital directly into designated zones. Understanding what qualifies is essential for both fund managers and investors.

The Statutory Definition
QOZBP is defined under IRC §1400Z-2(d)(2)(D). Under the statute, tangible property qualifies as QOZBP if it meets three requirements:
- It was acquired by purchase after December 31, 2017. The property must have been purchased — not contributed, inherited, or otherwise transferred — and the purchase must have occurred after the OZ program was enacted.
- Original use commences with the QOF or QOZB, or the property is substantially improved. Either the property must be put to use in the OZ for the first time by the QOF or QOZB, or the QOF or QOZB must substantially improve it after acquisition.
- Substantially all of the use of the property was in a qualified opportunity zone during substantially all of the QOF’s holding period. The property must remain actively deployed within the OZ throughout the holding period, not merely acquired and held there nominally.
All three requirements must be satisfied for property to qualify as QOZBP.
The Treasury Regulations
The final Treasury regulations at 26 CFR §1.1400Z2(d)-2 provide the detailed operational framework for applying the statutory definition. Key rules include:
Purchase Requirement
The term “purchase” is defined by reference to IRC §179(d)(2). This means the property must be acquired in a transaction where the QOF or QOZB’s basis is not determined by the transferor’s basis (i.e., not a carryover basis transaction) and is not acquired from a related party.
Related Party Restrictions
Property acquired from a related party does not qualify. Relatedness is determined using a 20% threshold under IRC §§267(b) and 707(b)(1). This is a stricter standard than the 50% threshold used in many other tax contexts, and fund managers should pay close attention to potential related party issues when structuring acquisitions.
Original Use vs. Substantial Improvement
There are two pathways to satisfying the second statutory requirement:
- Original use: The property’s first use in the qualified opportunity zone must commence with the QOF or QOZB. This pathway is most relevant for new construction, newly manufactured equipment, or property that has not previously been used within the OZ.
- Substantial improvement: If the property has been previously used in the OZ, the QOF or QOZB must substantially improve it. Substantial improvement requires that additions to the basis of the property during any 30-month period after acquisition exceed the adjusted basis of the property at the beginning of that period (excluding land for real property).
The 70% Use Test
For QOZBs (as opposed to QOFs holding property directly), at least 70% of the tangible property owned or leased by the business must qualify as QOZBP. This is sometimes referred to as the 70% tangible property test and is one of the key compliance requirements a QOZB must satisfy.
Property Manufactured, Constructed, or Produced
Special rules apply to property that a QOF or QOZB manufactures, constructs, or produces itself. Such property can qualify as QOZBP provided that the manufacturing, construction, or production process begins after December 31, 2017, and the other statutory requirements are met.
Leased Property
QOZBP is not limited to owned property. The regulations provide that tangible property leased by a QOF or QOZB can also qualify as QOZBP, subject to specific rules regarding the lease terms, related party restrictions, and the requirement that the property is used in the OZ during substantially all of the lease term.
Why QOZBP Matters
QOZBP is the building block of the entire OZ investment structure. As one of the three categories of Qualified Opportunity Zone Property (QOZP), it is the asset that ultimately sits at the bottom of every compliant QOF structure — whether held directly by the QOF or through an intervening QOZB.
For a QOF to satisfy the 90% asset test, at least 90% of its assets must consist of QOZP, which includes QOZBP held directly as well as stock or partnership interests in QOZBs that themselves hold QOZBP. For a QOZB to maintain its qualified status, at least 70% of its tangible property must be QOZBP.
Bottom Line
Understanding what qualifies as QOZBP — and what doesn’t — is fundamental to structuring a compliant OZ investment. The purchase requirement, related party restrictions, original use and substantial improvement pathways, and the 70% use test all require careful attention. Fund managers and investors should work with qualified tax counsel to ensure their investments satisfy the requirements of IRC §1400Z-2(d)(2)(D) and the applicable Treasury regulations.
