From La Jolla to Carlsbad to North Park, San Diego County property has appreciated enough over the last two decades that even modest original buyers are sitting on gains large enough to land in the top federal and California brackets the moment they sell. Here's what that actually looks like in dollars.
San Diego County applies the standard California documentary transfer tax of $1.10 per $1,000 of sale price, and no San Diego city currently layers on an additional mansion-style transfer tax the way Los Angeles does with Measure ULA. On a $2,000,000 La Jolla condo sale, that's roughly $2,200 — the smallest line item on the whole closing statement. The real cost is upstream, in the income-tax stack.
Every San Diego seller faces the same layers as the rest of California: federal long-term capital gains at 0%, 15%, or 20%; the 3.8% Net Investment Income Tax above $200,000 (single) / $250,000 (married) modified adjusted gross income; and California's tax, which has no capital gains discount at all — it's taxed as ordinary income up to 13.3% at the top bracket. Add depreciation recapture at a flat 25% federal rate if the property was a rental, and a large one-year gain can face a genuinely painful combined rate.
A retired couple who bought a Carlsbad or Encinitas home in the late 1990s for $400,000 and sells today for $2,200,000 is sitting on an $1,800,000 gain. Taken all at once: roughly $360,000 federal LTCG at 20%, roughly $68,400 NIIT, and California tax that could reasonably run $200,000+ depending on other income — a combined bite that can realistically hit 35%+ of the gain in the year of sale, on top of any depreciation recapture if it was ever rented out.
Given how competitive San Diego's replacement-property market is — especially coastal inventory from La Jolla down through Coronado — the 1031 exchange's 45-day identification window can force sellers into rushed, less-ideal replacement purchases just to hit the deadline, and the 180-day close window adds more pressure on top. Sellers who'd rather retire on the proceeds than keep managing property often find the exchange solves the tax problem by creating a new management problem. See why the 1031 clock is the real problem, not the tax deferral itself.
A common San Diego scenario: a couple owns several rental properties bought over 20-30 years, and one spouse is ready to fully retire while the other wants to keep some real estate exposure. Selling everything into a single 1031 exchange forces both into the same replacement-property decision. Structuring one or two properties individually with a SIS lets one spouse convert their share of the gain into a predictable income stream while the other keeps managing what remains — without forcing a joint decision neither fully wants.
Take that same $1,800,000 gain and structure it over 10 years instead — roughly $180,000 of recognized gain a year — and much of it stays inside the 0%/15% federal brackets instead of hitting 20% plus NIIT plus California's top rate all in one return. The buyer still closes with 100% cash; the seller's payment obligation is assigned to a licensed third party funding an A-rated annuity, with no requirement to buy replacement real estate. See what a Structured Installment Sale is, in plain terms, or run your own numbers.
No San Diego city currently has an additional mansion-style transfer tax; the standard $1.10 per $1,000 county documentary transfer tax applies to most sales.
Depreciation recapture under §1250 is taxed at a flat 25% federal rate and generally can't be spread using the installment method — it's recognized in the year of sale regardless of how the rest of the gain is structured.
Depending on income and whether recapture applies, a combined federal-plus-California rate of 35% or more on a large gain recognized in a single year isn't unusual. This is illustrative only, not a specific projection for your return.
Only with a 1031 exchange. A Structured Installment Sale defers by spreading recognition over a chosen schedule, with no requirement to reinvest in real estate.
No — it applies to any San Diego County property or business sale with a substantial gain, coastal or inland, rental or owner-occupied investment property.
Plug in your sale price, basis, and state — the calculator runs your exact 2026 federal + California tax and shows what a Structured Installment Sale keeps in your pocket.
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Or talk it through: 213-340-2018 · Hans Goldstein · NPN 20602398. Educational only — not tax, legal, or accounting advice.
