Build-to-Suit 1031 Exchange (2026) | Use Exchange Funds for Construction

What Is a Build-to-Suit Exchange?

A build-to-suit 1031 exchange (also called an improvement exchange) allows investors to use 1031 exchange funds to construct or improve a replacement property. This strategy works within the broader 1031 exchange process, enabling investors to acquire custom-built or significantly upgraded real estate while deferring capital gains taxes.

Instead of purchasing a finished property, investors can reinvest proceeds into land or underperforming assets and enhance them—similar to strategies discussed in qualifying property types and reverse exchanges.

When structured properly, this approach can also be combined with cost segregation to accelerate depreciation and maximize tax efficiency, making it a powerful addition to a broader real estate tax strategy plan.

How a Build-to-Suit Exchange Works

A build-to-suit exchange requires a specialized structure to remain compliant:

An Exchange Accommodation Titleholder (EAT) temporarily holds title to the replacement property
Construction or improvements are completed while the EAT holds ownership
The investor must identify the property within 45 days
All improvements must be completed within 180 days
The improved property is then transferred to the investor to complete the exchange

Build-to-Suit Exchange Rules

The 180-Day Construction Window

All construction and improvements must be completed within the 180-day exchange period. This timeline is strict and includes weekends and holidays.

Exchange Accommodation Titleholder (EAT) Requirement

The investor cannot take title to the property during construction. The EAT must hold ownership until improvements are complete and the exchange is finalized.

Value Requirements — Improvements Must Be Complete at Transfer

Only improvements that are fully completed and in place at the time of transfer count toward the exchange value. Any unfinished construction may result in taxable “boot.”

When to Use a Build-to-Suit Exchange

Developing a custom commercial or industrial facility
Purchasing land and constructing a new property
Executing a value-add strategy on an underperforming asset
Upgrading a property to meet specific operational needs

Build-to-Suit vs. Standard 1031 Exchange

Feature	Build-to-Suit Exchange	Standard 1031 Exchange
Use of Funds	Purchase + construction/improvements	Purchase only
Ownership During Process	EAT holds title	Investor acquires directly
Timeline Complexity	High	Moderate
Flexibility	Custom-built property	Existing properties only
Cost	Higher ($10K–$25K+ additional)	Lower

Common Build-to-Suit Exchange Mistakes

Underestimating construction timelines
Failing to complete improvements within 180 days
Budget overruns that reduce reinvestment value
Incorrect ownership structure during construction
Not planning the exchange before starting the project

Frequently Asked Questions

Can I build on land I already own using 1031 exchange funds? +

Not directly. The property cannot be owned by you during the exchange. However, structuring through an Exchange Accommodation Titleholder (EAT) may allow this in certain cases.

What if construction isn’t finished within 180 days? +

Only improvements completed at the time of transfer count toward the exchange value. Unfinished work may result in taxable boot.

Is a build-to-suit exchange more expensive than a standard exchange? +

Yes. These exchanges involve additional costs for EAT setup, legal structuring, and construction coordination. Typical additional costs range from $10,000 to $25,000 or more.

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Build-to-Suit 1031 Exchange, Use Exchange Funds for Construction & Improvements