The 3-Property Rule is the most common: you can identify up to three properties of any value. Putting a fast-closing backup in one of those slots is a common way to keep the exchange alive if a primary deal collapses after the list locks on Day 45.
The day your property sale closes, a 45-day clock starts. Before it runs out you have to give your qualified intermediary (QI), the third party that handles the exchange, a written list of the properties you might buy. That list has to follow one of three identification rules, and once Day 45 passes it is locked for good.
Three ways to identify, and when each fits
Rule | What you can identify | Constraint | Typical fit |
|---|---|---|---|
3-Property Rule | Up to 3 properties | No value limit | Most exchangers. Simple, flexible, covers primary + backup + safety net. |
200% Rule | Any number of properties | Combined market value cannot exceed 200% of sale price | Diversifying into 4+ smaller properties. |
95% Rule | Any number at any value | Must close on at least 95% of total identified value | Almost never practical. One failed deal voids the exchange. |
Three or fewer properties, and the 3-Property Rule is the simplest path: no value cap, nothing else to satisfy. Past three, the question is whether your combined total fits under the 200% cap. The 95% Rule sits outside both, and it asks for near-certainty that every identified property will close, which is why it rarely gets used.
The 3-Property Rule in practice
Say you sell for $600,000 and identify three targets:
- Property A: a rental house at $550,000, your primary target
- Property B: a commercial unit at $800,000, your backup
- Property C: a $200,000 interest in a DST, your safety net
A DST here is a fractional interest in a trust that holds real estate, and it can close in a matter of days. The combined value comes to $1,550,000, and that is fine: the 3-Property Rule has no value cap. You have to close on at least one of the three by Day 180, not all of them.
The 200% Rule in practice
Sell for $600,000 and your 200% cap is $1,200,000. Identify:
- Property A: $300,000
- Property B: $250,000
- Property C: $250,000
- Property D: $200,000
- Property E: $150,000
- Total: $1,150,000, under the $1,200,000 cap
This works. Add a sixth property that pushes the total over $1,200,000 and the entire identification is invalid, unless you can satisfy the 95% Rule.
This fits when you want to spread the money across four or more smaller properties, or you want more than three backup options.
Why the 95% Rule rarely works
Identify five properties totaling $2,000,000 and you have to close on at least $1,900,000 of it. One deal falling through can drop you under that 95% threshold and void the whole identification. For most situations, that is too much riding on every single closing.
How to submit your identification
- In writing. A signed document. A verbal identification does not count.
- Delivered to your QI (or another non-disqualified party) before midnight on Day 45.
- Unambiguously specific. A street address or legal description; "a rental property in Dallas" does not work.
Most QIs provide a standard form. Submitting it by Day 40 leaves room for the delivery problems that have killed exchanges on the last day.
You can change the list any time before Day 45 - revoke and resubmit as often as you need. After Day 45, it is permanently locked.
The backup DST strategy
The most practical insurance in a 1031 exchange lives in that third slot:
- Property #1: your top direct-property choice.
- Property #2: your second direct-property choice.
- Property #3: a pre-vetted DST.
If both direct deals close, the DST identification simply goes unused. If a direct deal collapses on Day 90 (financing, inspection, seller default), you can activate the DST, and because a DST can close in three to five business days, the exchange survives.
The trap it guards against is the locked list. After Day 45 you cannot add a new property, so a deal that dies later cannot be swapped for a fresh one. Without a fast-closing backup already on the list, a late collapse ends the exchange. That is why keeping at least one slot for a fast-closing option is a common approach, even when the primary deal looks certain.
The most common pattern under the 3-Property Rule is a primary target, a secondary target, and a DST backup: flexible on the front end, with a fast-closing option held in reserve if a deal falls apart.
Frequently asked questions
Can I identify a property I haven't seen in person?
Yes. The identification rules don't require physical inspection. But identifying properties sight-unseen and then discovering deal-breaking issues during due diligence is risky, because your identification slots are limited.
What if I want to buy a property that isn't on my identification list?
You can't. After Day 45, you can only close on properties that appear on your written identification. This is absolute; there are no exceptions for a "better" property found later.
Can I identify a property that's not yet built?
Potentially, through an improvement or build-to-suit exchange. The property must be described as it will exist when received. This is a complex variant that requires specialized QI structuring and is more expensive than a standard exchange.
What happens if I accidentally identify four properties under the 3-Property Rule?
It is invalid unless those four properties satisfy the 200% Rule or the 95% Rule. Four properties totaling more than 200% of your sale price, with no way to close on 95% of them, voids the exchange. The identification rules are mechanical, so precision matters.
Can I identify a fractional interest in a property?
Yes. That is exactly how DST identifications work: you are identifying a fractional beneficial interest in a trust that holds real property. Tenant-in-common (TIC) interests also qualify. What matters is that the underlying asset is qualifying real property.