An improvement exchange, sometimes called a build-to-suit exchange, allows a taxpayer to use exchange funds not just to buy a replacement property but to improve it, with the added construction value counting toward satisfying the exchange as long as the work is paid for and completed inside the same 180-day period that governs every other 1031 exchange. It is a common fit for a New York City exchanger buying an underbuilt outer-borough site that trades below the value of the relinquished property specifically because it needs work.
Why the Titleholder Structure Is Required
A taxpayer cannot hold title to the replacement property directly while using exchange funds for construction, because doing so would give the taxpayer control over funds that are supposed to remain outside their direct access until the exchange is complete. Instead, an exchange accommodation titleholder, typically formed by the qualified intermediary, takes and holds title to the replacement property while construction proceeds. The taxpayer directs the improvements and the QI disburses exchange funds for the work, but legal ownership does not transfer to the taxpayer until the titleholder conveys the property, which has to happen before day 180.
The 180-Day Clock Does Not Pause for Construction
Permitting delays, a slow contractor, or a change order do not extend the exchange period. Any improvements not actually completed and paid for by day 180 do not count toward the replacement value, and exchange funds still sitting unspent at that point are generally treated as boot. For New York City projects, where Department of Buildings permitting and inspection timelines routinely run longer than in other markets, the construction schedule needs real contingency built in from the start rather than assuming a best-case timeline will hold.
Where This Fits in Outer-Borough Industrial Property
Older industrial stock in areas like Sunset Park, Maspeth, or Hunts Point often trades below the value of a comparable relinquished asset precisely because it needs added clear height, upgraded loading, or new electrical service to serve a modern logistics tenant. An improvement exchange lets a buyer close on that discounted building and use exchange funds to bring it up to the target replacement value, rather than searching for an already-improved building at a matching price point inside a tight 45-day identification window.
What Counts as Completed Work at the Deadline
Construction does not have to be fully finished by day 180, but only the value actually built and paid for by that date counts toward the exchange; work that is contracted but not yet performed does not add replacement value even if the taxpayer fully intends to finish it later. Treating the final 30 days of the exchange period as a hard planning boundary, with the contractor and the titleholder confirming in advance that the handback and conveyance can happen cleanly, avoids discovering a shortfall only after the deadline has already passed.
Funding the Construction Draw Schedule
Exchange funds are disbursed by the qualified intermediary against a draw schedule tied to actual construction progress, not released to the taxpayer or the contractor as a lump sum at the start. Each draw request typically needs supporting invoices or a contractor's certification of work completed, since the titleholder and the QI are both accountable for showing that funds moved to genuine construction costs rather than sitting idle or being used for unrelated purposes. A New York City project with a general contractor unfamiliar with exchange-funded draws sometimes needs the payment process explained upfront, since it runs on a stricter documentation standard than a conventional construction loan draw.
Common 1031 Exchange Questions
Can construction on the replacement property continue after the exchange closes?
Yes, but only the value of work completed and paid for by day 180 counts toward the exchange. Work finished afterward does not add to the replacement value used to satisfy the exchange, even if it was always part of the plan.
Who holds title to the replacement property during construction?
An exchange accommodation titleholder, typically formed by the qualified intermediary, holds title while improvements are made. Title transfers to the taxpayer only once the titleholder conveys the property, which has to happen inside the 180-day window.
What happens to unspent construction funds at day 180?
Exchange funds still unspent when the 180-day period ends are generally treated as boot and become taxable, which is why the draw schedule needs to be tracked against the exchange calendar and not only against the project's own construction milestones.
Does a Department of Buildings permitting delay extend the exchange deadline?
No. Permitting delays are common in New York City projects but do not extend the 180-day period. Contingency for permitting timelines has to be built into the construction schedule from the outset.
Is an improvement exchange only useful for underbuilt or discounted property?
It is most commonly used that way, buying a property below the relinquished sale price and adding value through construction, but it can also apply to a full build-to-suit project on vacant or minimally improved land, as long as the work is completed and paid for within the deadline.
