What an improvement exchange allows
In a standard 1031, you swap one existing property for another. In an improvement exchange (also called a build-to-suit or construction exchange), exchange funds held by an Exchange Accommodation Titleholder (EAT) are used to fund improvements on the replacement property before you take title. This lets you satisfy the equal-or-greater-value requirement even if the raw replacement property costs less than your sale proceeds, because the completed improvements count toward the exchange value.
How the structure works
An EAT (a neutral third party, often affiliated with the Qualified Intermediary) takes title to the replacement property and holds it while improvements are funded from the exchange proceeds. You direct and supervise the construction. Once improvements are substantially complete — or the 180-day clock runs out — the improved property is conveyed to you. You must still identify within 45 days, and the identified improvements must be described with reasonable specificity in the identification notice.
Practical constraints
The 180-day deadline is the single biggest challenge: significant construction in six months is difficult. Improvement exchanges also carry higher professional fees than standard exchanges. They work best for acquisitions requiring light renovation, fit-out of a commercial shell, or purchase plus landscaping and site work. Ground-up construction almost never completes within 180 days. Consult a 1031 specialist before attempting one.
Frequently asked questions
Can I build on the replacement property using 1031 funds?
Yes — through a build-to-suit improvement exchange, provided improvements are made by an EAT before you take title and everything closes within the 180-day window.
Does an improvement exchange give me more time than 180 days?
No. The standard 45-day identification and 180-day closing deadlines apply. Any improvements not completed in time do not count toward the exchange value.
Sources
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.