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Improvement 1031 Exchanges: Build a Plan That Can Close

By Jerry Baker

An improvement 1031 exchange can let you receive replacement real estate with construction or renovation work included in the exchange. The work must form part of the real estate you receive on time; prepaid work done after you take title does not count the same way. Plan the ownership, building schedule, and funding before the replacement purchase closes. [1]

What an improvement exchange is meant to accomplish

You may find a property that suits your needs but needs work. Perhaps an industrial building needs a new roof, a retail space needs a buildout, or land needs a building. The price alone may be below the replacement value needed for your exchange. You would like the improvements to form part of what you acquire.

An improvement exchange can address that goal. It is also called a construction or build-to-suit exchange. The idea is to acquire improved real property through the exchange, rather than buy a property first and later spend exchange cash fixing your own asset.

Those two paths may look similar on a project budget. They are not the same for Section 1031. The deferred-exchange rule lets you identify property that is still being built. But work done after you receive it is a service. It is not more like-kind property received in the exchange. [1]

Start by separating the investment decision from the exchange mechanics. Would you want this property with this work at this total cost? Then ask whether enough of the work can be in place while the required ownership structure and deadlines are still satisfied.

The ownership plan comes before the building plan

In a common structure, an exchange accommodation titleholder, or EAT, parks the replacement property while work is done. You receive the property after the agreed work is in place, within the required time. The titleholder and exchange team arrange the transfers and funding under written agreements.

The IRS parking safe harbor is the qualified exchange accommodation arrangement, or QEAA. It permits certain arrangements in which you fund, guarantee debt, manage the property, supervise improvements, or act as a builder. You can have those rights while the EAT is still the federal tax owner. They also do not excuse the other exchange rules. [2]

The details matter. Who signs the building contract? Who owns the site? Who approves draws? Which party is insured? Who is responsible for unpaid bills? Ask counsel, the EAT, lender, and title company to agree on those answers before work begins.

A seller or builder may also deliver a property with agreed work in place. That delivery must be part of a properly structured exchange. The right plan depends on who owns the site and what the contracts say. Do not assume every improvement exchange must follow one identical closing script.

Do not start with land you already own

A common misunderstanding is that selling one property lets you use the exchange money to construct a building on another property you already own. That does not, by itself, exchange your old real estate for new like-kind property.

Revenue Procedure 2004-51 specifically explains that exchanging real estate for improvements on land owned by the same taxpayer does not meet Section 1031. It also excludes from the QEAA safe harbor replacement property you owned during the 180 days ending when the required ownership interest transfers to the EAT. [3]

This is not a rule that says waiting 181 days makes an exchange with yourself valid. Other ownership, exchange, and tax rules remain. Complex leasehold or related-party plans require specialized advice; the procedure's discussion of those arrangements is not blanket permission to use them.

If you already own the site, state that clearly at the first planning meeting. Provide the deed, ownership history, entity records, and any related-party interests. It is better to learn early that the plan does not fit than to order materials on a mistaken tax assumption.

Identify the land and the intended improvements

For a deferred exchange, replacement property generally must be identified within 45 days after the old property is transferred. Property to be built can be identified before it exists in its finished form. The regulation calls for a legal description of the land and as much detail about the improvements as is practical when the identification is made. [1]

A useful identification package might refer to the parcel, a dated plan, the building's intended use, its approximate size, and the major work to be done. Your QI and counsel should decide the wording and how the plans are attached or referenced. A vague note saying “construction project somewhere in the county” does not clearly describe the property.

Use plans that the team can realistically carry out. If a permit decision could change the whole project, discuss that risk before the identification is locked in. The rules allow normal changes made as a project is built. These do not, by themselves, make it a different property from the one identified. Substantial changes can create a problem. [1]

Also review property-count and value limits. The 200% identification rule uses an estimate for property still being built. Use its expected fair market value when you will receive it. The bare land's purchase price is not necessarily the correct value to place on a planned improved property. [1]

Build one calendar from all applicable deadlines

A deferred exchange generally has a 45-day identification period and a receipt period ending on the earlier of 180 days after the old property's transfer or the federal tax return due date, including extensions, for that year. Those periods overlap; they are not consecutive work windows. [4]

If an EAT parks the property under a QEAA, that arrangement adds its own requirements. They include a written agreement within five business days after the ownership transfer to the EAT and a 180-day parking limit. When replacement property is parked before the sale, identification of the relinquished property is also due within 45 days under that procedure. The combined parking time cannot exceed 180 days. [2]

Your work schedule must fit the deadlines that apply to your actual sequence. A later sale does not restart a parking clock already running. A builder's contract extension does not itself extend either tax deadline.

Work backward from the last permissible transfer date. Leave room for draw review, value support, lien searches, title updates, lender consent, documents, and recording. A schedule that finishes construction on the very last day leaves no room to verify and transfer what was built.

Completed work, delivered materials, and promises are different

The tax question is what real property you receive, not merely what your project account has paid. A deposit can reserve labor or supplies without producing an improvement on the land. Materials stored elsewhere may raise different issues from materials installed in a building.

The regulation allows incomplete real property to count, within its stated conditions. Ask whether the finished project would have been substantially the same property identified. That test still matters when the work is not done. What you actually receive counts only to the extent it constitutes real property under the applicable local-law rule in that provision. Work done after you receive it does not count as later receipt of like-kind property. [1]

Have counsel and your CPA review the actual state of the project. Ask what is attached, what has become part of the real estate, and what remains a contract right or service. The builder's percent-complete invoice is not a tax ruling.

The project may still need later work to be usable. That fact does not automatically erase the qualifying land and improvements received. It also does not allow the unfinished work to count as though it already existed. The tax result and the right to move into the building are separate questions.

A hypothetical construction shortfall

Assume an investor sells debt-free investment real estate for $1.4 million. Its adjusted basis is $500,000. For this simplified example, ignore selling costs and all other closing adjustments. The planned replacement is $900,000 of land and existing real property plus $500,000 of improvements. No new loan is involved.

Suppose that, by the exchange transfer date, only $350,000 of qualifying improvements are in place. Assume their fair market value equals that amount and the underlying property's value remains $900,000. The investor receives $1.25 million of qualifying real property and later receives the remaining $150,000 of exchange cash when its release is allowed.

Item in the simplified modelAmount
Sale value$1,400,000
Adjusted basis$500,000
Realized gain$900,000
Qualifying property received$1,250,000
Cash received$150,000
Recognized gain$150,000
Deferred gain$750,000
Replacement tax basis$500,000

The recognized gain is the smaller of the $900,000 realized gain or $150,000 cash received in this limited example. Replacement basis is $1.25 million minus $750,000 of deferred gain. The tax on the recognized gain depends on its character and the investor's tax facts; $150,000 is gain, not the tax bill. [5] [6]

If the investor later spends $150,000 finishing the work, that payment does not retroactively add replacement property to the completed exchange. Its basis treatment requires the usual review of the later capital costs. Real projects also have fees, interest, debt, and value changes, so this model is only a way to see the timing problem.

Keep a project budget and an exchange-value schedule

The project budget lists what the entire project will cost. The exchange-value schedule tracks qualifying real estate expected to be received by the transfer date. They should inform each other, but they should not be treated as the same worksheet.

For each major work item, track its contract amount, payments made, expected installation date, actual status, and supporting records. Flag anything expected after transfer. Have the advisers review fees and other costs separately rather than silently treating every dollar paid as exchange value.

Cost is not always fair market value. An overrun can raise your spending without raising the property's value dollar for dollar. A bargain purchase can have the opposite effect. Agree early on how value will be supported for the exchange and how the unfinished work will be described.

A weekly update can be simple: planned qualifying value, currently supportable value, work likely to finish before transfer, and value still at risk. It is more useful than a single percentage that combines paid deposits, completed work, and a hoped-for finish date.

The builder schedule should show the hard dependencies

Start with permits and utility service. Then identify items that must happen in order: foundations before framing, inspections before closing walls, or electrical service before equipment testing. The slowest critical step may control the whole schedule.

Ask the builder which materials have long lead times and what substitutes are allowed. A substitution can affect quality, cost, permit approval, and whether the finished property remains consistent with the identification. Review major changes with the exchange advisers before treating them as routine.

Do not use an optimistic completion date as the only plan. Ask for a second schedule assuming a delayed permit, missed delivery, or failed inspection. The purpose is not to predict every problem. It is to learn whether one ordinary delay would consume the whole remaining exchange period.

Contract remedies also need practical review. A penalty clause might compensate you after a delay, but cash compensation is not the same as receiving the identified real property on time. A builder's promise to finish later does not override the regulation's receipt rule. [1]

Funding, draws, and cash control need to work together

Map the source of every dollar: exchange proceeds, your more funds, and construction or bridge debt. Then show who holds the funds and who approves each payment. A project can be fully funded on paper yet stalled because a draw requires an inspection that was never scheduled.

The QI safe harbor includes restrictions on your ability to receive, pledge, borrow, or otherwise obtain the benefits of exchange funds. Do not route the money through your personal account merely because you intend to pay the builder immediately. Have the QI approve the planned payment path within the exchange documents. [1]

For an EAT arrangement, permitted funding and management terms can provide flexibility. That does not mean the lender will accept every draw request or ownership transfer. Confirm the borrower, guarantor, collateral, maturity, and transfer conditions before starting.

Budget for work that must be completed after you receive the property, too. If exchange cash cannot count toward that later work as replacement property, you still need a practical source of funds to finish the asset and place it in service.

Use milestones that allow a decision before the deadline

Suppose a project's internal plan calls for a value review 60 days before transfer, a work status review 30 days before transfer, and final title work two weeks before transfer. These are sample work dates, not legal rules. Their value is that they force a discussion while action is still possible.

At each review, ask three questions. What qualifying property is likely to be ready? What cash or other value may be left outside the exchange? What must be funded after transfer? If the answers change, update the tax estimate and funding plan together.

A smaller completed scope may be workable if it remains consistent with the identification and the tax result is acceptable. A major redesign may create both an identification problem and a schedule problem. Have counsel review the difference; do not solve it by changing a project label.

Consider backups before construction becomes urgent

A backup replacement property may help in some exchanges, but it has to fit the identification and receipt rules. A new idea discovered after the identification period may be too late. Review backups and the total identification count or value before the deadline. [1]

Also compare accepting a partial exchange with stretching for an unwanted asset. The tax cost of unspent cash may be less harmful than buying a weak property simply to use every dollar. That is a decision for a side-by-side tax and investment analysis, not a rule that partial deferral is always better.

A finished property may have a higher price but less delivery risk. An improvement project may better suit your needs but demand more time, money, and oversight. Compare the full cost of each path, including the risk of incomplete work and the funds needed after closing.

Assign the last-mile tasks

Name the person who will check the final site condition. Name the person who will review title. Name the person who will tell the bank that the draw file is complete. Each task should have an owner and a due date. If everyone expects someone else to make the last call, even finished work can sit behind a missing document.

Keep one short list of open issues. Mark which ones prevent transfer and which ones can be handled after you take title. Your tax and legal team should help make that distinction. A small punch-list item and a missing ownership approval can have very different effects, even if both appear on the same project report.

Finish with evidence of what you actually received

The final file should show that you received the property you identified. Include plans, approved changes, dated photos, inspection reports, invoices, draw records, value support, title records, and settlement statements. No single record proves the whole exchange qualifies. Together, these records help the team show what happened.

Make sure unfinished obligations are spelled out. Who completes them after transfer? Who pays? Does the lender require a reserve? What remains before a tenant can move in? Those questions can affect income well after the exchange is complete.

Your CPA also needs the final allocation of land, buildings, other components, costs, recognized gain, and carryover basis. An exchange does not automatically give the whole property a new tax basis equal to its finished market value. IRS guidance explains the basis adjustment for deferred gain. [5] [6]

The goal is to receive a property you want, on terms you understand, with records that support the exchange actually completed. An attractive drawing and a paid building contract cannot replace those facts.

Frequently asked questions

Can a 1031 exchange pay for renovations?

A properly structured improvement exchange can include qualifying renovations that are part of the replacement real property you receive on time. Buying the building first and renovating your own property afterward does not have the same exchange treatment. [1]

Does the entire building have to be finished?

Not always. The regulation allows qualifying incomplete real property under stated conditions. Only the property actually received counts, and the result must remain consistent with the identification rules. Later work is not more like-kind property received in that exchange. [1]

Can I count materials I prepaid for?

A payment alone does not establish receipt of qualifying real estate. Have advisers decide whether the materials are part of the real property transferred, considering their actual location, installation, ownership, and the applicable rules. [1]

Can I build on land I already own?

Simply using exchange proceeds to improve your own land does not meet the exchange requirement. The IRS also limits use of its parking safe harbor for replacement property you owned within the preceding 180-day period described in the procedure. [3]

How detailed must the construction identification be?

The regulation calls for a legal description of the underlying land and as much detail about the improvements as is practical when the identification is made. Have the QI and counsel review the written description and any attached plans before sending it. [1]

Does a construction delay extend my exchange?

A builder's delay or contract extension does not itself extend the tax deadlines. Review all applicable exchange and parking periods with your advisers and build a practical buffer into the schedule. [1] [2]

Can I manage the work while an EAT holds the property?

The QEAA procedure permits certain management, construction, and supervision arrangements without losing the safe harbor for that reason alone. The full agreement, tax ownership, funding, and other requirements still need to be satisfied. [2]

What happens if less work is ready than planned?

You may receive less qualifying replacement value and have taxable cash or other nonqualifying value. The precise result depends on basis, debt, expenses, value, and what is received. A CPA should calculate it from the completed transaction, not just the original budget. [5] [6]

Sources and references

  1. Office of the Federal Register / Treasury Department. 26 CFR § 1.1031(k)-1, Treatment of deferred exchanges. eCFR page displayed Title 26 current through October 2, 2026.Relevant sections: Paragraphs (a), (b), (c)(1)–(6), (d), (e), (f), (g), and (k). Accessed October 6, 2026.
  2. Internal Revenue Service. Revenue Procedure 2000-37 in Internal Revenue Bulletin 2000-40. October 2, 2000; modified by Revenue Procedure 2004-51..Relevant sections: Revenue Procedure 2000-37, pages 308–310. Sections 4.02 and 4.03 cover deadlines, ownership, and permitted agreements.. Accessed October 6, 2026.
  3. Internal Revenue Service. Revenue Procedure 2004-51. 2004 modification, read October 6, 2026..Relevant sections: Prior ownership during the specified 180-day period, improvements on owned land, and limits of the ownership safe harbor.. Accessed October 6, 2026.
  4. United States Code, reproduced by Cornell Legal Information Institute. 26 U.S. Code Section 1031: Exchange of real property held for productive use or investment. Current text read October 6, 2026..Relevant sections: Subsections (a), (b), (d), (f), and (h). Accessed October 6, 2026.
  5. Internal Revenue Service. Instructions for Form 8824 (2025), Like-Kind Exchanges. 2025 edition, current instructions reviewed October 6, 2026.Relevant sections: Like-kind property; Line 5; Lines 15 and 15a; Lines 18–25; related-party exchanges. Accessed October 6, 2026.
  6. Internal Revenue Service. Publication 544: Sales and Other Dispositions of Assets. 2025 edition, current publication read October 6, 2026.Relevant sections: Amount realized, adjusted basis, like-kind exchange basis, and unrecaptured Section 1250 gain. Accessed October 6, 2026.

Educational information, not an offer or a personal tax, legal, or investment recommendation. Examples are hypothetical and omit stated adjustments. Tax treatment depends on your facts and current law. Review your transaction with your CPA, attorney, and qualified intermediary. Real estate investments can lose value and may be illiquid.

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