Tax strategy should support a good real estate decision, not rescue a weak one. Before choosing a structure, get clear about the result you actually need: continued income, less management, more diversification, greater liquidity, a different property, or simply a clean exit.

That distinction matters because the four strategies below solve different problems. A 1031 exchange and a Delaware Statutory Trust may be relevant when an investor wants to remain in real estate after a sale. Cost segregation concerns the timing of depreciation on property already acquired. An Opportunity Zone investment is a separate, longer-horizon investment structure whose rules are in transition during 2026.

None of them turns tax into a non-issue. Each changes the timing, form or risk of the decision.

Begin with the property decision

Before comparing tax strategies, assemble five facts:

  1. A realistic range for the property's current value.
  2. Estimated net proceeds after debt, transaction costs and any required work.
  3. Tax basis, depreciation history and an estimate of federal and California consequences under more than one sale scenario.
  4. The income, liquidity and management role you want after the transaction.
  5. Any deadline, family need, financing dependency or estate-planning issue that could limit your choices.

A strategy that preserves deferral but leaves you in the wrong asset, with too little liquidity or under an unrealistic deadline may not improve the overall result.

The four strategies are not interchangeable

1031 exchange

What it may help accomplish: Defer recognition of eligible gain while moving from qualifying investment or business real estate into other qualifying real estate Primary constraint: Strict structure and deadlines; the replacement property still has to make sense

Cost segregation

What it may help accomplish: Move eligible building costs into shorter depreciation recovery periods, potentially increasing near-term deductions Primary constraint: It changes the timing of deductions and can affect later sale consequences; study quality and property facts matter

Qualified Opportunity Fund

What it may help accomplish: Invest eligible gain through a specialized fund under federal Opportunity Zone rules Primary constraint: Long holding period, investment and sponsor risk, limited liquidity, and changing rules during the 2026–2027 transition

Delaware Statutory Trust

What it may help accomplish: Own a passive fractional interest in institutional-style real estate; some structures may serve as 1031 replacement property Primary constraint: Sponsor control, fees, debt, restricted liquidity and offering-specific securities risk

1031 exchanges: deferral with a fixed clock

Section 1031 generally applies to real property held for investment or productive use in a business. It does not apply to a primary residence simply because the owner would prefer to defer tax, and it does not apply to real property held primarily for sale. When the requirements are satisfied, the exchange generally defers recognition of eligible gain rather than eliminating it. The replacement property's basis carries the deferred tax history forward.

In a typical delayed exchange, the structure needs to be in place before the relinquished property closes. The seller should not receive or control the proceeds. A qualified intermediary ordinarily receives the sale proceeds and uses them to acquire the replacement property under the exchange agreement.

Two federal deadlines shape the process:

  • Replacement property generally must be identified in writing within 45 days after transfer of the relinquished property.
  • Replacement property generally must be received within 180 days after that transfer, or by the due date of the tax return for that year, including extensions, if earlier.

These periods run concurrently and are not ordinary offer deadlines that the parties can casually extend. That is why an investor should interview the qualified intermediary and tax adviser before accepting a sale timeline—not after the closing has already placed proceeds in the investor's hands.

Receiving cash, debt relief that is not properly replaced, nonqualifying property or other value can cause some gain to be recognized even when the rest of the exchange qualifies. Related-party transactions, entity ownership, vacation or personal use, partnership interests, seller financing and an intended quick resale can also change the analysis.

For California property exchanged into out-of-state property, there may be an ongoing state reporting obligation. The California Franchise Tax Board's current Form 3840 instructions generally require reporting for the year of the exchange and in later years until the California-source deferred gain or loss is recognized.

Useful question: If there were no tax deferral, would you still want to own the replacement property at its price, income, risk and management burden?

Cost segregation: accelerating deductions, not creating value

A building is not always treated as one undivided asset for federal depreciation. A properly prepared cost segregation study examines the property and supporting cost records to identify components that may belong in different tax classifications and recovery periods.

When meaningful costs qualify for shorter recovery periods, the owner may receive larger depreciation deductions earlier than under a building-only schedule. That can improve near-term after-tax cash flow, particularly when the owner has taxable income that can actually use the deductions under the applicable passive-activity, at-risk and other tax rules.

The tradeoff is timing. Accelerating depreciation does not change the property's rent, occupancy, condition or market value. It generally reduces tax basis more quickly, and a later sale can trigger depreciation recapture or other tax consequences. The result also depends on current law, placed-in-service dates, ownership structure and the quality of the underlying study.

A useful study should reconcile to the property's actual cost basis, explain its classifications and methodology, use credible property and construction information, and be reviewable by the owner's tax professional. A headline deduction estimate without that support is not enough.

Cost segregation is most worth investigating when:

  • the depreciable building basis is large enough to justify the study and compliance cost;
  • the owner expects to hold the property long enough for the timing benefit to matter;
  • the property has eligible components that can be documented; and
  • the owner's tax adviser has modeled both the near-term benefit and the likely exit consequences.

Useful question: Does the projected after-tax benefit remain worthwhile after study cost, ownership horizon, deduction limitations and the eventual sale are included?

Opportunity Zones: a specialized investment during a rule transition

Qualified Opportunity Funds invest in businesses or property connected to designated Qualified Opportunity Zones. They are not simply another form of 1031 exchange. The investor typically invests eligible gain through a fund, and the fund, project, timing and holding requirements determine the available federal tax treatment.

The timing is unusually important in 2026. The original program's treatment continues to matter for qualifying investments made under the rules that apply through December 31, 2026. Legislation enacted in 2025 made the incentive permanent in revised form, with a new round of zone designations scheduled to take effect January 1, 2027 and recur every ten years. The IRS has issued transition guidance and has said further regulations are expected.

That means an article, pitch deck or projection using the pre-2027 rules should not be assumed to describe an investment made under the revised program. Before relying on a tax benefit, the investor's tax and securities professionals should confirm:

  • whether the gain and investment date are eligible;
  • which version of the law applies;
  • the inclusion, basis and holding-period rules for that version;
  • whether the fund and underlying project satisfy the applicable requirements; and
  • how the investment would be taxed by California and any other relevant state.

The investment itself still needs full underwriting. A tax benefit does not protect against construction risk, business failure, leverage, sponsor conflicts, fees, valuation uncertainty or the inability to sell. Many Qualified Opportunity Fund interests are private placements, which may offer less public information and far less liquidity than exchange-traded investments.

Useful question: Would the underlying project still meet your return, risk and liquidity standards without the most optimistic tax assumption?

Delaware Statutory Trusts: passive real estate with less control

A Delaware Statutory Trust can hold one or more properties while investors own beneficial interests in the trust. In the specific structure described in IRS Revenue Ruling 2004-86, the investors were treated as owning fractional interests in the real estate, allowing those interests to qualify as replacement property under Section 1031 when the other requirements were satisfied.

That ruling does not mean every investment carrying the letters “DST” qualifies. The trust's powers, documents and operation matter. Exchange eligibility should be confirmed for the specific offering by the investor's qualified intermediary, tax adviser and securities professionals before the investor relies on it.

DSTs may appeal to an owner who wants to remain invested in real estate without selecting, financing and managing a whole replacement property. They may also provide access to property types or sizes an individual would not buy alone.

The same structure limits control. Investors generally do not make ordinary property-level decisions, and the sponsor may control financing, leasing, reserves, sale timing and major responses within the trust's permitted powers. Offering and financing fees reduce the capital actually working in the asset. Distributions can change, the property can decline in value, debt creates risk, and an investor may have little ability to sell on demand.

DST interests are commonly offered as private-placement securities. The SEC warns that private placements can be highly illiquid, can provide more limited information than registered offerings and can expose the investor to a substantial or total loss. Review the private placement memorandum, property financials, appraisal, debt, reserves, sponsor history, conflicts, compensation and exit assumptions with professionals who are not relying solely on the transaction closing for their compensation.

Useful question: Is giving up control and liquidity an acceptable trade for passive ownership and possible exchange compatibility in this specific asset?

A better order of operations

  1. Model a taxable sale. Know the estimated federal and state tax range, net proceeds and what a clean exit would make possible.
  2. Define the post-sale objective. Income, growth, diversification, simplicity, liquidity and estate goals can point in different directions.
  3. Underwrite the real estate or fund. Tax treatment belongs in the model, but it should not substitute for property and sponsor analysis.
  4. Bring in the right professionals early. A tax adviser, qualified intermediary, attorney, lender and appropriately licensed securities professional have different roles.
  5. Map the deadlines before signing away flexibility. Closing dates, exchange identification, financing, family approvals and entity documents should appear on one calendar.
  6. Compare the downside. Ask what happens if income falls, the sale is delayed, replacement inventory is weak, rates change or the investment cannot be sold.

The right conclusion may be to exchange, to pay the tax and improve liquidity, to hold the existing property, or to use a different strategy entirely. The purpose of the review is not to force every owner into a tax structure. It is to understand the complete choice before an irreversible deadline makes it for you.

Professional boundary

This guide is educational decision guidance, not tax, legal, financial, investment or securities advice. Tax treatment, exchange eligibility, depreciation, basis, offering suitability and entity questions depend on the investor's facts and current law. Confirm them with appropriately qualified professionals before a sale closes or an investment is made. Westin can help organize the property facts, compare the real estate paths and coordinate the professional conversations.