Qualifies
- Rental single-family homes
- Multifamily (2-4 units, 5+ units)
- Commercial property (retail, office, industrial)
- Raw land held for investment
- Triple-net leased property
- DSTs (Delaware Statutory Trusts) — fractional 1031 vehicles
Tax strategy
1031 Exchange in San Diego — Defer Capital Gains, Build Wealth
A 1031 exchange lets you defer federal capital gains tax (and often state tax) by rolling proceeds from one investment property into another. The 45-day identification window and 180-day closing window decide whether your exchange survives. Bilingual, finance-licensed guidance from a Series 7 / Series 66 / California Life Insurance-licensed real estate advisor.
What is a 1031 exchange?
Section 1031 of the Internal Revenue Code lets you sell an investment property and reinvest the proceeds into another investment property of like kind, deferring federal capital gains tax indefinitely. Done right, you keep your full equity working — instead of handing 15-23.8% of it to the IRS at closing.
The strategy compounds. A $400K capital gain that would have been taxed at 23.8% = $95K to the IRS. Reinvested in a 1031 instead, that same $95K continues earning rent, appreciation, and depreciation in the next property. Repeat across a career and you can build a multi-property portfolio with money that never paid tax along the way — until you sell for cash, or your heirs inherit at a stepped-up basis.
That's the strategic angle most realtors miss. Agustin's pre-real-estate years at Morgan Stanley and JPMorgan Chase framed his thinking around tax-aware capital deployment. He runs the real estate side of the 1031 and hands the legal/QI work to a vetted qualified intermediary.
The deadlines that decide everything
The 45 / 180 day clock
Two deadlines start the moment your relinquished property closes. Miss either one and the exchange fails — full capital gains hit.
- 45 days to identify the replacement property (or properties) in writing to your qualified intermediary. The clock starts at closing — not when you list, not when you accept an offer. Closing day.
- 180 days to close on the replacement property, measured from the same starting date.
- Both clocks run concurrently. The 180-day window includes the 45-day identification window.
- No extensions for weekends or holidays — Day 45 is Day 45 even if it lands on a Saturday.
Identification rules let you list up to:
- Three properties of any value (the three-property rule), OR
- Any number of properties whose total fair market value is up to 200% of the relinquished property's sale price (the 200% rule), OR
- Any number of properties at any value, as long as you close on 95% by value of what you identified (the 95% rule).
Most San Diego investors run the three-property rule — clean, simple, defensible.
What qualifies
Like-kind property rules
Both the relinquished and replacement properties must be held for investment or productive use in a trade or business. Personal-use property — your primary residence, a second home, a vacation rental you stay in 60 days a year — does not qualify on its own. (See the Section 121 page for primary-residence rules and the converted-rental stacking play.)
Does NOT qualify
- Your primary residence (see Section 121 instead)
- Fix-and-flip inventory (held for sale, not investment)
- Personal-use second homes / vacation rentals
- Foreign property (US-to-US only since 2018)
- Stocks, bonds, partnership interests, REIT shares
- Personal property (post-TCJA — real estate only since 2018)
Exchange types
Four 1031 structures San Diego investors use
Forward exchange (delayed)
The classic. Sell relinquished property → identify within 45 days → close on replacement within 180. The QI holds proceeds in escrow so you never "touch" them — touching = taxable. 90%+ of San Diego 1031s run this structure.
Reverse exchange
Buy the replacement before selling the relinquished. Used when you find the perfect replacement property and can't wait for your current sale to close. Requires an "exchange accommodation titleholder" (EAT) to park the new property. More expensive ($5-12K vs $1-2K for forward), but it solves the "I found the property but my buyer hasn't closed yet" problem.
Construction / improvement exchange
Use exchange proceeds to improve the replacement property — add an ADU, gut-renovate, convert a duplex to a fourplex. All improvements must be completed within the 180-day window. Common in South Bay for forced-appreciation plays.
Build-to-suit exchange
Buy land + build to your specs using exchange proceeds. Same 180-day constraint applies to construction completion. Most often used for ground-up multifamily or commercial.
South Bay scenarios
Real-world 1031 plays in San Diego County
The Chula Vista house-hacker grows up. You started with an FHA 3.5%-down duplex in National City in 2018, lived in one side, rented the other. By 2026 it's worth $900K (you paid $480K). You want a fourplex but don't want to lose $80-100K of the gain to capital gains tax. 1031 forward exchange → roll the equity into a Chula Vista fourplex at $1.5M with a 25% down conventional. Tax-deferred portfolio scaling.
The accidental landlord. Your old primary residence in Lemon Grove has been a rental for the last 3 years (rented out when you moved to a bigger Eastlake home). Now you want to consolidate into a Coronado triplex closer to where you actually live. The Lemon Grove property qualifies as 1031 property because it's been held as a rental long enough — but the gain that accrued during your primary-use years may also qualify for partial Section 121 exclusion. This is the stacking play.
The downsizing investor. 65 years old, three rental SFRs in National City worth $2.4M total, $300K combined gain. Tired of toilets and tenants. Roll all three into a DST (Delaware Statutory Trust) — fractional ownership in a professionally managed apartment complex or commercial property in Texas. Same tax deferral, no operational burden, monthly distributions. Hold to estate plan, heirs inherit at stepped-up basis.
Common mistakes
What blows up a 1031 exchange
- Touching the proceeds. The QI must hold every dollar. If escrow wires you the funds — even for 24 hours — the exchange is dead. Boot, fully taxable.
- Missing Day 45. No mercy from the IRS. Identify in writing, signed, dated, delivered to the QI by midnight Day 45.
- Not naming a backup property. Identify three properties under the three-property rule. If your #1 falls through (inspection, financing, seller backs out), you still have #2 and #3 within the rules.
- Buying down. If the replacement property cost less than the relinquished property's sale price (after expenses), the difference is taxable boot. Match or exceed value, and reinvest all equity.
- Reducing debt. If the replacement property has less debt than the relinquished property, the difference is also taxable boot. Match or exceed both value and mortgage.
- Vesting mistakes. Title must match exactly between relinquished and replacement (same individual, same LLC, same trust). Spouses on title to one but not the other → invalid exchange.
- Holding too short. The IRS hasn't published a bright-line minimum hold but most CPAs recommend at least 12-24 months on each side to support investment-intent.
- Choosing the wrong QI. Qualified intermediaries are unregulated in most states. Pick one with strong fidelity bonds, segregated escrow accounts, and zero comingling. Agustin works with vetted San Diego QIs only.
How Agustin handles the 1031
What I do (and what I don't)
Agustin runs the real estate side of your 1031: identifying replacement properties that fit your strategy and timing, structuring offers that match the 45/180 deadlines, coordinating closings, and handling the South Bay-specific market intelligence (which neighborhoods are seeing rent growth, which areas have ADU potential, which properties have hidden problems).
For the legal/escrow side — the qualified intermediary, the exchange documents, the IRS reporting — he hands you to a vetted QI partner. He'll also recommend a CPA familiar with 1031 mechanics if you need one.
His Series 7 / Series 66 / California Life Insurance licenses mean he can hold a financially literate conversation about your portfolio strategy before any property tour — depreciation recapture, debt replacement, deferred tax liability over time, when a DST makes sense vs direct property. Most realtors can't do that.
Related lanes
Where 1031 connects to the rest
1031s are one half of the tax-strategy story for San Diego investors. The other half is Section 121: the $250K / $500K primary-residence exclusion. The two stack when a former primary residence has been converted to a rental — see the Section 121 page for the math.
For acquisition strategy: Invest in property (multifamily, house hack, ADU value-add) covers what you're rolling into. Financing Options covers the lender side — including DSCR loans for portfolio scaling and HELOC bridge plays. And All Tax Strategies is the broader hub.
1031 basics
Can I 1031 from a single-family rental into a multifamily?
Yes — single-family rental and multifamily are both real estate held for investment, so they're "like-kind" to each other. You can also exchange into commercial, raw land, or even a DST fractional share. The like-kind rule is broader than people think: it's about nature/character (real property used for investment) not building type.
Do I have to find a property of equal or greater value?
To fully defer all gain, yes — match or exceed both the value and the mortgage on the relinquished property, and reinvest all equity. Buy down → the shortfall is "boot" and gets taxed. Most San Diego investors aim for slight up-trade to absorb buying costs and stay safely above the boot line.
What does a qualified intermediary cost?
Forward exchanges typically run $800-$1,500 in QI fees. Reverse exchanges run $5,000-$12,000 because they require an exchange accommodation titleholder to park the property. Improvement/construction exchanges are usually in the $3-7K range. Agustin's vetted QI network has predictable pricing.
The 45 / 180 day clock
When does the 45-day clock start?
The day the relinquished property closes (when title transfers + funds disburse). Not when you list, not when you accept an offer, not when escrow opens — closing day. Both clocks run from that same day.
What if I can't find a replacement in 45 days?
The exchange fails and the full gain is taxable in that year. There's no extension mechanism in the statute. The best mitigations: (1) start looking for replacements before you list the relinquished property, (2) identify three properties as backups, (3) consider a DST as your "safety net" identification — DST sponsors usually have availability inside 45 days.
Can I 1031 across state lines?
Yes — anywhere in the United States. Common San Diego plays: 1031 from California rentals to Texas, Arizona, or Nevada where the math works better (lower property taxes, better cash flow). Agustin's expansion to Austin opens the door to in-house support on both sides of a CA-to-TX exchange.
Tactical
Can I 1031 from a duplex I house-hacked into a pure rental?
Yes if the unit you lived in has been rented long enough to be considered investment-held. The IRS hasn't set a bright line; most CPAs want at least 12-24 months as a pure rental before the exchange. The unit you didn't live in qualifies immediately. For mixed-use periods, you may also stack a partial Section 121 exclusion on the gain that accrued during your primary-use years.
What's a DST and when does it make sense?
A Delaware Statutory Trust is a fractional ownership vehicle that qualifies as 1031 replacement property. You become one of many beneficiaries in a single institutional-grade property (apartment complex, NNN-leased commercial, etc.) managed by a sponsor. No operational burden, monthly distributions, but no control. Right call for: (1) older investors getting out of active management, (2) tight 45-day windows where you can't find a direct replacement, (3) diversification across properties/markets.
Can I do a 1031 inside an LLC?
Yes — same LLC must own both relinquished and replacement properties (the "same taxpayer" rule). Multi-member LLCs work but the entity must be on both deeds. Partnerships and TICs (tenants-in-common) get complicated; talk to a CPA before structuring.
Ready to map your 1031?
Free 30-minute strategy call — bilingual, no obligation. We'll line up the replacement-property search and the QI introduction in the same week.