Can You Use a 1031 Exchange for New Construction?

Option 1: Buy a finished new build

If a developer delivers a completed property and you close on it within 180 days of your sale, it's a standard exchange. New construction is like-kind with the rental you sold. The only special risk is timing: a certificate of occupancy that slips from month five to month seven is a failed exchange, and the IRS grants no extension for construction delays. Only sign a contract on an unfinished build if the builder is far enough along that delivery is nearly certain, and identify a completed backup property on your 45-day list.

Option 2: The improvement (build-to-suit) exchange

This is the structure that lets your exchange dollars pay for construction. Because you can't own the replacement property while it's being improved with exchange funds (improvements to property you own are not like-kind property), an exchange accommodation titleholder (EAT) takes title to the land, your qualified intermediary funds the construction through the EAT, and on or before day 180 the EAT deeds the improved property to you. The safe harbor is Rev. Proc. 2000-37.

Your identification by day 45 must describe the land and the improvements to be built (Treas. Reg. §1.1031(k)-1(e)(3)); 'lot 12 with a 4-unit building per the attached plans' is the level of detail that holds up.

This structure fits renovations, additions, and builds that can be substantially complete in six months: a gut rehab, a small multifamily on a shovel-ready lot, a build-out of a commercial shell. Full mechanics in the construction and improvement exchange guide.

The 180-day 'value in place' rule

At the moment the EAT transfers the property to you, its value for exchange purposes is the land plus whatever improvements are actually in place. Lumber in the yard, a signed contract for the roof, and a deposit with the framer count for nothing. If you sold for $1,000,000 and by day 180 the land plus completed work is worth $750,000, the $250,000 shortfall is taxable boot. The exchange doesn't fail; it just becomes partial.

Practical planning: run the sale closing late enough that permits are already in hand, or use a reverse structure (below) so the clock starts when construction is already underway.

Option 3: Reverse-improvement for ground-up projects

For a true ground-up build, the standard 180 days is usually not enough. The workaround is to start construction before you sell: the EAT acquires the land and begins building with your outside funds or a construction loan, and you then sell your relinquished property. From that sale closing you have 180 days to complete the exchange, but the EAT's parking period is also capped at 180 days under the safe harbor, so the total window from EAT acquisition to completion is still 180 days. What this really buys you is control over when the clock starts. Outside the safe harbor, longer parking arrangements exist but carry real audit risk and need a tax attorney, not just a QI.

What doesn't work: building on land you already own

The most common request, and the one that fails. Property you already own cannot be your replacement property, and improvements to it aren't like-kind (Treas. Reg. §1.1031(k)-1(e)(4), following Bloomington Coca-Cola Bottling Co. v. Commissioner). Related-party ground-lease structures have been tried; Rev. Proc. 2004-51 specifically removes the safe harbor for property you owned within 180 days before the EAT acquires it. If your plan is to sell a rental and build on a lot you bought two years ago, talk to a tax attorney before assuming any structure works.

Is the extra cost worth it?

An improvement exchange costs more than a forward exchange because a separate entity has to take title, hold it, carry insurance, and transfer it back. Whether it's worth it is the same math as any exchange: the tax you'd otherwise pay on the sale, against the added structure cost and the risk of ending up partial. On a large gain it's usually an easy yes; on a small one, buying a completed property is cleaner. I'll run it honestly either way.