1031 Exchange Into an STR: Step-by-Step Walkthrough

1031 exchanges let real estate investors defer capital gains tax by exchanging one investment property for another like-kind property. The mechanism is powerful but technically demanding: strict 45-day identification windows, 180-day closing deadlines, and Qualified Intermediary (QI) requirements that prevent direct cash receipt. STR investors using 1031 to roll appreciated properties into new acquisitions can defer recapture and capital gains potentially indefinitely while resetting the depreciation schedule on the new property — the foundation for serial cost-segregation strategies across a portfolio.

The 1031 timeline

Day 1: close the sale of the relinquished property. Proceeds go directly to the QI — they cannot pass through the seller's hands without disqualifying the exchange. Day 1-45: identify up to three potential replacement properties (or more under specific rules). The identification must be in writing to the QI. Day 1-180: close on the replacement property. The 180-day deadline runs from the relinquished property's closing, not from identification. Both deadlines are strict; missing them disqualifies the exchange and triggers full taxation.

Like-kind requirements

All US real estate held for investment or business use is like-kind to all other US real estate held for investment or business use. A residential STR can exchange into a commercial property; raw land can exchange into a multi-family; investment property can exchange into investment property of any type. The like-kind test is broad. What's NOT like-kind: foreign property, primary residences, dealer property (held for resale), property held primarily for personal use.

Replacement value rules

• Replacement property value must equal or exceed relinquished property value (to fully defer all gains).
• Replacement debt must equal or exceed relinquished debt (or operator must contribute additional cash).
• Boot (cash received or debt relief) is taxable to the extent of gain in the relinquished property.
• Most full-deferral 1031s involve trading up — exchanging into a higher-value property.

Cost-seg interaction

1031 exchanges defer capital gains and depreciation recapture but transfer the relinquished property's basis (less any boot) to the replacement property. This means the replacement property starts with carryover basis, NOT the new acquisition price. For cost-segregation purposes, the carryover basis matters — the cost-seg study computes deductions on the basis post-exchange, which may be lower than the property's market value. For investors using serial 1031 + cost-seg: each exchange resets the depreciation schedule on the carryover basis, generating fresh year-one bonus-depreciation opportunities even though the underlying basis hasn't grown.

Cost-segregation in this strategy

Each 1031 exchange creates a fresh cost-segregation opportunity: the replacement property's first year of operation is a 'placed-in-service' year for tax purposes, allowing year-one bonus depreciation on reclassified 5- and 15-year assets. Investors using serial 1031 can effectively chain cost-seg studies across a multi-decade portfolio, generating large recurring federal tax deductions while deferring all capital gains until ultimate disposition (or estate-planning step-up at death). See cost segregation for Airbnb properties.

Frequently asked questions