Section 121: No Reinvestment Required

The Section 121 exclusion lets you exclude up to $250,000 in gain ($500,000 for married couples filing jointly) when you sell your primary residence. You need to have owned and lived in the home for at least two of the five years before the sale. That’s it.

There’s no timeline to buy a replacement home. No reinvestment window. No rollover provision. Congress eliminated the old buy-within-two-years rule back in 1997 with the Taxpayer Relief Act of 1997. You can sell your Brentwood home, rent in Santa Monica for five years, and owe nothing on the excluded portion of the gain.

Where Los Angeles sellers get confused is the difference between income tax on the gain and property tax on the next home. Section 121 handles the first part. Prop 19 handles the second. They’re separate systems with separate rules.

Proposition 19 and the Property Tax Transfer

This is where timing actually does matter in California. Proposition 19, which took effect in April 2021, lets homeowners 55 and older (or severely disabled, or wildfire/disaster victims) transfer their existing property tax base to a replacement home anywhere in the state.

The catch: you have to buy or build the replacement home within two years of selling the original. Buy a home that costs more than the original and your transferred base gets adjusted upward by the difference. Buy one that costs less or equal, and you keep the old base intact.

For a long-time LA homeowner with a Prop 13 assessed value of $400,000 on a home now worth $1.8 million, this transfer is worth real money. Without Prop 19, buying a new $1.8 million home means property taxes based on that purchase price — roughly $22,000 per year. With the transfer, you’d pay around $5,000. That $17,000 annual difference adds up fast.

Prop 19 replaced the old Propositions 60/90, which were more limited geographically and could only be used once. Under Prop 19, you can transfer up to three times.

1031 Exchanges for LA Investment Property

Selling a rental property or duplex in LA? The 1031 like-kind exchange lets you defer the capital gains tax, but the IRS gives you exactly two deadlines:

• 45 days to identify replacement properties in writing
• 180 days to close on the replacement

California conforms to federal 1031 rules for state tax purposes, but tracks deferred gains using Form FTB 3840. If you exchange a California property for one in another state and later sell that out-of-state property, California will tax the original deferred gain. They call it “clawback” and the Franchise Tax Board does not forget.

LA investors doing 1031 exchanges need to factor in California’s top 13.3% income tax rate. Deferring a $400,000 gain saves roughly $53,200 in state tax alone, on top of the federal deferral. That’s a strong incentive to get the paperwork right.

California’s Capital Gains Tax: No Special Rate

Here’s the part that stings. California taxes capital gains as ordinary income. There’s no preferential long-term rate like the federal system offers. If your total taxable income pushes you into the top bracket, your home sale gain above the Section 121 exclusion gets taxed at 13.3% by the state — the highest rate in the country.

A couple selling a home in Silver Lake for $2 million with a $700,000 basis has a $1.3 million gain. After the $500,000 exclusion, $800,000 is taxable. Federal long-term capital gains tax plus the 3.8% net investment income tax comes to roughly $190,000. California adds another $106,400. Total tax bill: about $296,000. No amount of quick buying eliminates that.

Los Angeles Transfer Taxes at Closing

LA County charges a documentary transfer tax of $1.10 per $1,000 of sale price. The City of Los Angeles adds $4.50 per $1,000. On a $1.5 million home, that’s $8,400 in transfer taxes paid by the seller. Since April 2023, the Measure ULA “mansion tax” adds a 4% surcharge on sales above $5 million and 5.5% above $10 million — a massive hit for high-end LA properties.

Sources

• IRS Topic No. 701 — Sale of Your Home
• 26 U.S.C. § 121 — Exclusion of Gain from Sale of Principal Residence
• 26 U.S.C. § 1031 — Exchange of Real Property Held for Productive Use or Investment
• California State Board of Equalization — Proposition 19
• California FTB — Form 3840 (Like-Kind Exchange)
• California FTB — Personal Income Tax Rates
• IRS — Net Investment Income Tax