1031 Step-Up: Trading Small LA Buildings Into One Larger Apartment Asset
Quick answer
A 1031 step-up is selling one or more small rental properties and exchanging into a single larger apartment building while deferring capital gains tax. In Los Angeles the math usually favors the trade because price per unit falls as buildings get larger — the median across tracked closings runs roughly $337,500 per unit for 2–4 unit buildings versus $204,000 per unit at 20+ units. The exchange clock is strict: 45 days to identify replacement property and 180 days total to close. Consult your CPA and a qualified intermediary before selling.
Why owners trade up
Three duplexes scattered across LA County require three roofs, three sets of tenants, three insurance policies and three trips. One twelve-unit building in a single location consolidates that work, and it usually buys more units per dollar: across tracked closings the median price per unit is about $337,500 in the 2–4 unit band versus about $204,000 at 20 units and above.
The second reason is financing. A larger stabilized building supports agency debt with longer terms and, in many cases, interest-only periods that improve cash flow relative to a stack of small residential loans.
The rules that actually govern the timeline
A 1031 exchange defers tax on the gain from an investment property sold and replaced with like-kind investment property. The deadlines are unforgiving and start on the day your relinquished property closes.
- Day 0: your sale closes and proceeds go to a qualified intermediary — never to you.
- Day 45: replacement property must be identified in writing, usually up to three properties.
- Day 180: the replacement purchase must close.
- Value and debt: to fully defer, buy equal or greater value and replace the debt you paid off.
- Selling multiple properties into one purchase is allowed, but each sale starts its own clock.
Sequencing multiple small sales into one purchase
The practical difficulty of consolidating several buildings is that the clocks do not line up. Two approaches work. The first is to close the small sales close together, so their 45-day identification windows overlap on the same replacement building. The second is a reverse exchange, where the replacement property is acquired first through an exchange accommodation titleholder and the small properties are sold afterward — more expensive, but it removes the risk of selling with nothing to buy.
Either way the replacement building should be under contract or firmly identified before the first sale closes. Identifying blind at day 44 is how exchanges fail.
What to underwrite in the replacement building
Do not let the tax deadline force a bad purchase. The deferral is worth a fraction of the loss from overpaying for a building with unverified income or an unresolved regulatory issue.
- In-place versus market rents, unit by unit, with the applicable rent regulation confirmed for that specific property.
- Debt sizing at today's rates against in-place income, not pro forma income.
- Seismic retrofit status and any outstanding city orders.
- Capital plan for the first 24 months: roof, plumbing, electrical, unit turns.
- Realistic exit: who buys this building in five to ten years.
Frequently asked questions
Can I sell three fourplexes and 1031 into one apartment building?
Yes. Multiple relinquished properties can be exchanged into a single replacement property, but each sale has its own 45-day identification and 180-day closing deadlines, so the sales are usually scheduled close together. Work with a qualified intermediary and your CPA before the first sale closes.
How much cheaper per unit are larger LA buildings?
Across tracked closings the median price per unit is roughly $337,500 for 2–4 unit properties, $261,500 for 5–9 units, $236,363 for 10–19 units and $204,000 at 20 units and above. Individual properties vary widely by submarket, condition and rent regulation.
What happens if I miss the 45-day identification deadline?
The exchange fails and the gain becomes taxable in the year of sale. There are no extensions except in federally declared disaster situations. This is why the replacement property should be identified, and ideally under contract, before the relinquished sale closes.
Is a DST an option if I cannot find a building in time?
A Delaware Statutory Trust interest can qualify as replacement property and is sometimes used as a backup identification. It is passive and illiquid, so treat it as a fallback rather than a plan, and review it with your tax and investment advisors.
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