An improvement exchange, sometimes called a build-to-suit exchange, lets an investor use exchange funds not just to buy a replacement property but to construct or renovate it before the exchange closes. It solves a real problem: sometimes the best replacement property is not on the market as-is, it has to be built or substantially improved first, and the standard exchange rules do not automatically allow construction costs to count as reinvested exchange proceeds.
Why a Standard Exchange Cannot Fund Construction Directly
In a normal forward exchange, the investor cannot hold title to the replacement property while exchange funds are still being spent on it, because doing so would put the investor in control of exchange proceeds being used for improvements, which raises the same constructive-receipt problem that applies to cash boot. An improvement exchange works around this by having an exchange accommodation titleholder, the same kind of entity used in a reverse exchange, hold title to the replacement property while construction or renovation happens, using exchange funds the intermediary releases for that purpose.
How the Structure Works in Practice
The mechanics follow a specific sequence.
- The relinquished property sells and proceeds go to the qualified intermediary, as in a standard exchange
- An exchange accommodation titleholder acquires the replacement property, either raw land or an existing building needing upgrades
- The intermediary releases exchange funds to pay for construction, renovation, or new improvements on the parked property
- Before the 180-day deadline, the EAT transfers title to the investor, with all completed improvements included as part of the replacement property
Everything that will count toward the exchange, land, existing structure, and any improvements, has to be in place by the time title transfers to the investor at day 180, not afterward.
The 180-Day Deadline Does Not Move for Construction
This is the detail that trips up the most investors: the standard 180-day deadline still applies in full, and construction has to be far enough along by that date for the completed value to count. Improvements finished after title transfers to the investor do not count as part of the exchange, even if construction was already underway and clearly intended as part of the plan. For a full renovation or ground-up build in a Washington market where permitting alone can take weeks, compressing design, permitting, and construction into a 180-day window is often the hardest part of the entire structure, harder than the deferral rules themselves.
Matching Replacement Value to the Relinquished Property
To fully defer gain, the value of the land plus completed improvements at the time title transfers needs to equal or exceed the value of the relinquished property, the same matching requirement that applies to a standard exchange. An investor exchanging a fully improved Tacoma retail building for raw land in Kent that will be built out under an improvement exchange needs the land value plus whatever construction is complete by day 180 to reach that target, or the shortfall is treated as boot and becomes taxable. This is why realistic construction scheduling, built around the actual deadline rather than an optimistic best-case timeline, matters as much as the underlying tax structure.
When an Improvement Exchange Is Worth the Added Complexity
Improvement exchanges involve more moving parts, an EAT, a construction budget, a contractor, and permitting timelines, than a standard purchase of an existing property, so they tend to make the most sense when the ideal replacement genuinely does not exist as-is. An investor who wants a purpose-built industrial facility in the Kent Valley rather than whatever similar buildings happen to be listed, or who is acquiring land in a growing Washington submarket with plans to develop it to a specific tenant's requirements, may find an improvement exchange is the only way to get exchange treatment on the finished asset rather than just the raw land. Investors considering this route should line up a contractor, a lender if financing is involved, and an EAT experienced with construction-phase exchanges before the relinquished property even closes, since the 180-day clock leaves little room to assemble that team after the fact.
Common Questions
Can I use 1031 exchange funds to build a new property from raw land?
Yes, through an improvement exchange. An exchange accommodation titleholder holds the land while exchange funds pay for construction, and title transfers to the investor once the exchange closes, with completed improvements counted as part of the replacement property.
Does the 180-day deadline get extended for construction projects?
No. The standard 180-day deadline still applies in full. Only improvements completed and reflected in the property's value by the time title transfers to the investor count toward the exchange.
What happens if construction is not finished by day 180?
Whatever value has been completed by that date counts toward the exchange, and the property still transfers to the investor at that point. Uncompleted work does not add exchange value, and any resulting shortfall against the relinquished property's value may be treated as boot.
Who holds title to the property while it is being built or renovated?
An exchange accommodation titleholder, a single-purpose entity set up specifically to hold title during the improvement period, rather than the investor holding it directly while exchange funds are still being spent.
Is an improvement exchange more expensive than a standard 1031 exchange?
Generally yes. It requires setting up and maintaining an exchange accommodation titleholder, additional legal and closing costs, and coordination with a contractor and construction lender, on top of the standard exchange fees.