The 45-day deadline gets the attention, but how you identify matters just as much as when. The tax code gives you three identification rules — the 3-property rule, the 200% rule, and the 95% exception — and choosing the right one for your situation keeps the exchange flexible and safe. Pick the wrong rule, identify too many properties, or exceed a value cap, and the identification can fail and take the exchange with it. This guide explains each rule in depth, with worked examples and the strategy behind them.
Why Identification Rules Exist
The identification rules balance two competing needs. On one hand, you need flexibility — the ability to name backups in case your primary deal falls through, since you can't add properties after day 45. On the other, the IRS doesn't want you identifying an unlimited list of every property in the market just to keep your options open indefinitely.
The three rules resolve that tension by capping either the number of properties or their total value, with one narrow exception for investors who genuinely intend to acquire nearly everything they identify. Together they give you room to plan for contingencies without turning the identification into a meaningless formality.
Understanding the rules isn't academic. Which one you rely on determines how many properties you can name and how much total value you can identify — decisions you must make before you draft your day-45 identification, because getting them wrong invalidates the identification.
The Three-Property Rule in Detail
The 3-property rule lets you identify up to three properties of any total value, and acquire any one, two, or all three. There is no limit on the combined value of the three — you could identify a $400,000 property, a $900,000 property, and a $1.2 million property even if you sold for $600,000.
This is by far the most common rule because it's simple and value-blind. The typical use is to identify a primary target plus one or two backups, then acquire whichever come together. It suits the great majority of exchangers, who are replacing one property with one or two others.
The 3-property rule's simplicity is its strength: you don't have to track or cap total value, just the count. As long as you name no more than three properties and describe each unambiguously, you're within the rule.
The 200% Rule in Detail
The 200% rule lets you identify more than three properties, as long as their combined fair-market value does not exceed 200% of the value of the property you sold. If you sold for $1,000,000, you can identify any number of properties whose total value is up to $2,000,000.
This rule is built for diversification. Investors spreading a single exchange across several smaller assets — most often multiple DSTs across sectors — rely on the 200% rule to name all of their targets while staying within the value cap.
The trap is the cap itself. If the combined value of everything you identify exceeds 200% of what you sold, you've violated the rule, and unless you fall back on the 95% exception, the identification can fail. Track the running total carefully as you build your list.
The 95% Exception in Detail
If you identify more properties than the 3-property rule allows and more total value than the 200% rule allows, there's still one way to qualify: the 95% exception. Under it, you may identify any number of properties of any value, but only if you actually acquire at least 95% of the total value you identified.
In practice, this means you must close on essentially everything on your list. If you identify $3,000,000 across ten properties, you must acquire at least $2,850,000 of that value, leaving almost no room for a single deal to fall through.
Because the margin for error is so thin, the 95% exception is rarely used. It exists for sophisticated investors acquiring large, pre-arranged portfolios where the acquisitions are nearly certain. For most exchangers, it's a theoretical safety valve, not a practical plan.
Choosing the Right Rule
Most exchangers use the 3-property rule. It covers the common case — replacing one property with one, plus a backup or two — without the burden of tracking total value, and it's value-blind, so a high-value backup is no problem.
Diversifiers buying several DSTs or smaller assets lean on the 200% rule, which lets them name more than three targets as long as the total stays within twice the relinquished value. The 95% exception is a last resort for those acquiring nearly everything they identify.
Decide which rule you're using before you draft your identification, and let it govern both the number of properties and the total value you name. Your qualified intermediary can confirm you're within the chosen rule before you deliver the notice.
- 3-property rule: up to three properties, any value — the common choice for most exchanges.
- 200% rule: more than three, total value within 200% of what you sold — built for diversification.
- 95% exception: any number, but you must acquire 95% of identified value — rarely used.
Worked Examples of Each Rule
Say you sell for $1,000,000. Under the 3-property rule, you could identify three properties worth $500,000, $900,000, and $1,200,000 — any total value is fine — and acquire whichever you choose. A primary at $1,000,000 plus two smaller backups is a typical setup.
Under the 200% rule, you could identify five DSTs totaling up to $2,000,000 (200% of your $1,000,000 sale), then acquire the ones that build your target portfolio. Identify six worth $2,200,000 combined, though, and you've blown the cap.
Under the 95% exception, you could identify ten properties worth $3,000,000 total, but you'd have to close on at least $2,850,000 of that value — leaving essentially no room for any deal to fail. These figures are illustrative; the rules, not the numbers, are the point.
How Value Is Counted Under the 200% Rule
Under the 200% rule, value is measured by the fair-market value of each identified property, summed across your entire list, compared with 200% of the relinquished property's value. It's the gross value of the properties, not your equity in them, that counts toward the cap.
This matters when leverage is involved. A $2,000,000 property you'd buy with $1,000,000 of debt still counts as $2,000,000 toward the cap, not $1,000,000. Build your list with the full values in mind so you don't inadvertently exceed 200%.
Keep a running tally as you add candidates, and have your qualified intermediary verify the total before you deliver. A clean count is the difference between a valid 200%-rule identification and a failed one.
Identifying DSTs Under the Rules
DSTs interact naturally with all three rules and make diversification practical. Under the 3-property rule, you might identify one direct property plus two DSTs, or three DSTs across sectors. Under the 200% rule, you can identify several DSTs as long as their combined value stays within the cap.
Because each DST is a defined offering with a defined value, counting toward the 200% cap is straightforward, and identifying is simple — you name the trust and your dollar or percentage interest. This clarity is part of why DSTs are the most reliable way to satisfy the identification rules.
A common, robust setup is a primary direct property plus a DST backup under the 3-property rule: if the direct deal closes, great; if not, the DST closes fast and the exchange succeeds. For diversifiers, several DSTs under the 200% rule build a balanced replacement portfolio in a single exchange.
Mistakes That Void an Identification
The identification rules create specific ways to fail. Identifying four or more properties while relying on the 3-property rule voids the identification. Exceeding 200% of the relinquished value under the 200% rule does the same, unless you can satisfy the 95% exception. Vague descriptions that don't unambiguously identify a property are a separate, common failure.
Other errors include miscounting the 45 days, failing to sign or properly deliver the notice to the qualified intermediary, and forgetting that gross property value — not equity — counts toward the 200% cap. Each can invalidate the identification and collapse the exchange.
Prevent all of this with process: choose your rule first, track the property count and total value, describe each property precisely, and have your QI review the identification before delivery. The rules are simple once you know them; the failures come from not tracking against them.
Strategy: Primary Plus Backups
The smartest use of the identification rules is almost always to name backups, not just a primary. Because you cannot add properties after day 45, and because real estate deals fall through, a backup you identified is your insurance against a taxable failure.
Under the 3-property rule, the canonical structure is a primary target plus a fast-closing DST backup. If the primary comes together, you acquire it; if it stalls, the DST closes in days and the exchange succeeds. Diversifiers use the 200% rule to name several DSTs and build a portfolio, with the breadth itself providing resilience.
Either way, treat identification as risk management, not just paperwork. The marginal effort of vetting and identifying a backup within the window is trivial next to the cost of a failed exchange — the entire deferred tax coming due at once.
A Diversified 200%-Rule Example
To see the 200% rule in action, imagine you sell a commercial building for $2,000,000 and want to diversify the proceeds rather than buy a single replacement. Under the 200% rule, you can identify properties totaling up to $4,000,000 in fair-market value — plenty of room to build a portfolio.
You identify five DSTs: a $1,200,000 multifamily DST, a $900,000 net-lease DST, an $800,000 industrial DST, a $600,000 medical-office DST, and a $500,000 royalty DST — $4,000,000 combined, right at the cap. Each is a defined offering with a defined value, so counting toward the 200% limit is straightforward.
You then acquire the four that best fit your target allocation, investing precisely enough to meet equal-or-greater value and replace your debt through the leveraged DSTs. The result is a single exchange diversified across five sectors, multiple sponsors, and many geographies — far more resilient than rolling $2,000,000 into one building.
Notice the discipline required: you tracked the running total of fair-market values as you built the list, kept it within $4,000,000, and confirmed the count and values with your qualified intermediary before delivering. Identify a sixth DST that pushes the total to $4,300,000, and you'd have blown the cap — failing the identification unless you could acquire 95% of the entire $4.3 million. The 200% rule rewards careful value tracking, which is exactly where a disciplined process pays off.
How Advisors Use the Rules in Practice
Experienced advisors treat the identification rules as a risk-management toolkit, not just a compliance hurdle. For a typical exchanger replacing one property, they'll structure a 3-property-rule identification with a strong primary and one or two fast-closing backups — almost always including a DST that can close in days if the primary fails.
For an investor deliberately diversifying, they'll build a 200%-rule list of several DSTs across sectors, sized so the combined value stays within the cap and so the eventual acquisitions hit the equal-or-greater-value and debt-replacement targets precisely. The goal is always the same: maximize the chance of completing a fully deferred exchange while keeping options open.
The 95% exception rarely enters the picture except for large, near-certain portfolio acquisitions, where the buyer is confident of closing essentially everything identified. For everyone else, advisors steer toward the 3-property or 200% rule, where the margin for a deal to fall through is built in.
The throughline is preparation. An advisor helps you assemble and vet a shortlist before you sell, choose the rule that fits your strategy, draft a clean identification, and confirm it complies before day 45. Done well, identification becomes a confident, deliberate step rather than a last-minute scramble — and that confidence is what separates completed exchanges from failed ones.
Identification in Special Situations
The identification rules apply the same way in special situations, but those situations add wrinkles worth planning for. When you sell multiple relinquished properties as part of one exchange, the 200% cap is measured against the combined value of everything you sold — which gives you more room to identify a diversified set of replacements, but also more total value to track carefully.
When the exchanging taxpayer is a partnership or LLC, the entity identifies and acquires as a single taxpayer; individual partners can't identify separate properties for their own accounts inside the same exchange. Partners who want different replacements generally need to plan a drop-and-swap well in advance, which affects who identifies what.
For large portfolio acquisitions, the 95% exception occasionally becomes practical, because a buyer acquiring a pre-arranged portfolio may be confident of closing essentially everything identified. For everyone else, the thin margin of the 95% rule makes the 3-property or 200% rule the safer choice.
In a construction or improvement exchange, you identify the replacement property and describe the improvements to be made, in enough detail to identify the completed property — and remember that only improvements finished and paid for within 180 days count toward your replacement value. Related-party exchanges layer on a two-year holding requirement that doesn't change identification itself but does shape which properties you'd want to identify.
Across all of these, the discipline is the same: choose the rule that fits your list, track the property count and total value against its limits, describe each property unambiguously, and confirm compliance with your qualified intermediary before day 45. The more complex the situation, the more valuable it is to involve an experienced advisor and your CPA early, so the identification supports the structure you actually need.
These situations are also where a knowledgeable, independent advisor earns their keep. Matching the identification strategy to a multi-property sale, a partnership unwind, or a construction plan requires coordinating the rules with the broader exchange structure — and getting it right before day 45, when the list locks, is far easier than discovering a problem afterward.
The Rules in Practice
In day-to-day practice, the overwhelming majority of exchanges use the 3-property rule with a primary and one or two backups, one of which is often a DST. It's simple, flexible, and value-blind, and it covers the typical replacement scenario cleanly.
The 200% rule comes into play when an investor is deliberately diversifying a single exchange across multiple assets — most commonly a set of DSTs spanning sectors and sponsors. The 95% exception remains rare, reserved for large, near-certain portfolio acquisitions.
Whatever rule fits your situation, decide on it early, build your list against its limits, and have your qualified intermediary confirm compliance before day 45. An independent advisor can help you assemble a shortlist — direct, net-lease, and DST options — that fits your dollar amount, your chosen rule, and your deadline, so the identification is a confident step rather than a last-minute gamble.
Frequently Asked Questions
What are the 1031 identification rules?
Three rules govern how you identify replacement property: the 3-property rule (up to three properties of any value), the 200% rule (more than three if their total value is within 200% of what you sold), and the 95% exception (any number if you acquire at least 95% of the identified value).
Which identification rule is most common?
The 3-property rule, because it's simple and value-blind. It lets you name a primary plus one or two backups of any value without tracking total value, which covers the typical replacement scenario.
How does the 200% rule work?
It lets you identify more than three properties as long as their combined fair-market value doesn't exceed 200% of the value of what you sold. If you sold for $1,000,000, you can identify any number of properties totaling up to $2,000,000.
What is the 95% exception?
It lets you identify any number of properties of any value, but only qualifies if you actually acquire at least 95% of the total value you identified. With almost no margin for a deal to fall through, it's a rarely used last resort.
Is property value or my equity counted under the 200% rule?
Gross fair-market value, not your equity. A $2,000,000 property you'd buy with $1,000,000 of debt still counts as $2,000,000 toward the 200% cap. Track full values when building your list.
What happens if I identify too many properties?
Identifying four or more under the 3-property rule, or exceeding 200% of value under the 200% rule, voids the identification — unless you can satisfy the 95% exception by acquiring 95% of the identified value. A void identification generally fails the exchange.
Which rule should I use?
Most exchangers use the 3-property rule for a primary plus backups. Diversifiers buying several DSTs use the 200% rule. The 95% exception is a last resort for those acquiring nearly everything they identify. Choose before you draft your identification.
How do DSTs fit the identification rules?
DSTs are defined offerings with defined values, so they're easy to identify (by trust and dollar/percentage interest) and to count toward the 200% cap. A common setup is a direct primary plus a DST backup under the 3-property rule, or several DSTs under the 200% rule for diversification.
Can I identify backups?
Yes, and you should. Under the 3-property rule you can name a primary plus one or two backups; under the 200% rule you can name several properties within the value cap. Because you can't add properties after day 45, backups are essential insurance against a failed deal.
Do I have to buy everything I identify?
No, except under the 95% exception. Under the 3-property and 200% rules you can acquire some or all of what you identified. The 95% exception is the only rule that requires you to acquire nearly all of the identified value.
Can I change which rule I'm using after identifying?
Your identification must satisfy a rule as delivered by day 45. You can revoke and re-identify in writing within the 45-day window, but after day 45 the identification — and the rule it satisfies — is locked.
What voids a 1031 identification?
Exceeding the property count or value limits of your chosen rule, vague descriptions, miscounting the 45 days, failing to sign, or delivering to the wrong party. Choosing your rule first and tracking against its limits prevents these failures.
Can I mix the identification rules?
You identify under one rule for a given exchange — your list must satisfy the 3-property rule, the 200% rule, or the 95% exception as delivered. In practice, you choose the rule that accommodates your list: three or fewer properties of any value use the 3-property rule; more than three use the 200% rule within the value cap.
Do all identified properties have to be like-kind?
Yes. Every property you identify must be qualifying like-kind real property held for investment or business. Identifying a non-qualifying property doesn't help and can complicate the exchange; stick to eligible real estate, including DSTs and other fractional interests.
How many DSTs can I identify?
Up to three of any value under the 3-property rule, or more than three under the 200% rule as long as their combined value stays within 200% of what you sold. Because DSTs have defined values, counting them toward the 200% cap is straightforward.
What is the safest identification strategy?
For most exchangers, the 3-property rule with a strong primary plus a fast-closing DST backup is safest — it's simple, value-blind, and resilient if the primary fails. Diversifiers use the 200% rule to name several DSTs within the value cap. In both cases, identifying backups is the key to protecting the exchange.
Does my equity or the property's price count under the 200% rule?
The property's gross fair-market value counts, not your equity. A $2,000,000 property bought with $1,000,000 of debt counts as $2,000,000 toward the cap. Track full values so you don't unintentionally exceed 200% of your relinquished value.
Can I revoke an identification and start over?
Yes, within the 45-day window — revoke in writing to your QI and deliver a new identification before the deadline. After day 45, the list is locked, so make any meaningful changes well before the window closes rather than in its final hours.
Glossary
- 3-Property Rule
- Identify up to three replacement properties of any value.
- 200% Rule
- Identify more than three properties if their total fair-market value is within 200% of the relinquished value.
- 95% Exception
- Identify any number of properties if you acquire at least 95% of the identified value.
- Identification Notice
- The written, signed list of replacement properties delivered to the QI within 45 days.
- Fair-Market Value
- The value used to measure properties against the 200% cap — gross value, not equity.
- Diversification
- Spreading exchange proceeds across multiple properties to reduce risk.
- Backup Identification
- A fast-closing option (often a DST) identified to ensure the exchange can close if the primary fails.
- Delaware Statutory Trust (DST)
- A defined fractional offering, easy to identify and count toward the rules.
- Revocation
- Withdrawing an identification in writing within the 45-day window to re-identify.
- Qualified Intermediary (QI)
- The required party that receives the identification and can confirm rule compliance.
- Equity vs. Value
- Under the 200% rule, gross property value counts toward the cap, not your equity.
- Identification Period
- The 45-day window from the sale to identify replacement property.
Sources & References
Disclosures
This article is published by Baker 1031 Investments, LLC for general educational purposes for accredited investors and is not an offer to sell or a solicitation of an offer to buy any security, nor is it tax, legal, accounting, or investment advice or a recommendation. Any securities offering is made solely through a sponsor’s private placement memorandum (PPM) following a suitability determination. Securities offered through Aurora Securities, Inc. (ASI), member FINRA / SIPC; Baker 1031 Investments is independent of ASI.
Oil & gas mineral and royalty interests and DST programs are speculative, illiquid securities sold only to verified accredited investors and involve substantial risk, including possible loss of principal, commodity-price and production-decline risk, lack of control, and the risk that an intended 1031 exchange fails to qualify for tax deferral. Whether a particular interest qualifies as like-kind real property is a fact-specific legal determination that varies by state and by the terms of the instrument. Tax results depend on your individual circumstances. Consult your own CPA and attorney before acting. Past performance does not guarantee future results.
