What Is 三物業規則（Three-Property Rule）?
這條規則是1031交換中最容易讓投資者措手不及的限制。45天內你必須鎖定最多三處替代物業，且最終必須從中購買。若識別了四處或更多，就會觸發更嚴格的200%規則。實務建議：在開始出售前就開始尋找替代物業，預留充分的調研時間。在組合擴展與1031交換策略中，提前規劃替代物業是成功交換的關鍵。
三物業規則（Three-Property Rule）是1031交換中的核心限制條件，要求投資者在45天識別期內最多只能指定三處潛在替代物業，無論其總價值為多少。
At a Glance
How It Works
Core mechanics. Three-Property Rule operates within the broader framework of tax strategy. When investors encounter three-property rule in a deal, they need to understand how it interacts with other variables like operating expenses, NOI, and cap rate. The concept applies whether you are analyzing a single-family rental or a small multifamily property.
Practical application. In practice, three-property rule shows up during the manage phase of investing. For properties in markets like Columbus, understanding this concept helps you make informed decisions about pricing, financing, or management. Most investors learn to factor three-property rule into their standard deal analysis spreadsheet alongside metrics like cash-on-cash return and DSCR.
Market context. Three-Property Rule can vary significantly across markets. What works in Columbus may not apply in a coastal metro where cap rates are compressed and competition is fierce. Always validate your assumptions with local data and comparable transactions.
Real-World Example
Priya is evaluating a property in Columbus listed at $432,000. The property generates $2,400/month in gross rent across two units. After accounting for three-property rule in the analysis, Priya discovers that the effective return shifts meaningfully — the initial 5.5% cap rate calculation changes once this factor is properly accounted for.
Priya runs the numbers both ways: with and without properly accounting for three-property rule. The difference amounts to roughly $3,200/year in either additional cost or reduced income. On a $432,000 property, that is the difference between a deal that meets the 1% rule and one that falls short. Priya adjusts the offer price accordingly and negotiates a $12,000 reduction, which the seller accepts after 8 days on market.
Pros & Cons
- Helps investors make more accurate deal projections by accounting for a commonly overlooked variable
- Provides a standardized framework for comparing properties across different markets and property types
- Reduces the risk of unpleasant surprises after closing by identifying potential issues during due diligence
- Gives experienced investors an analytical edge over less sophisticated buyers in competitive markets
- Can add complexity to deal analysis, especially for newer investors still learning the fundamentals
- Market-specific variations mean that rules of thumb may not apply universally across all property types
- Requires access to reliable data, which can be difficult to obtain in some markets or property categories
- Over-optimizing for this single factor can cause analysis paralysis and missed opportunities
Watch Out
- Data reliability: Always verify your three-property rule assumptions with actual market data, not seller-provided projections or outdated estimates
- Market specificity: Three-Property Rule behaves differently in landlord-friendly vs. tenant-friendly states, and across different property classes
- Integration risk: Do not analyze three-property rule in isolation — it interacts with financing terms, tax implications, and local market conditions
Ask an Investor
The Takeaway
Three-Property Rule is a practical tax strategy concept that every serious investor should understand before committing capital. Whether you are buying your first rental property or scaling a portfolio, properly accounting for three-property rule helps you project returns more accurately and avoid costly mistakes. Master this concept as part of the portfolio scaling 1031 exchanges approach and you will make better-informed investment decisions.