Real Estate Taxes in California:
What Every Property Owner Needs to Know

California Real Estate: One of the Most Tax-Complex Assets You Can Own

California real estate sits at the intersection of at least five distinct tax systems: property tax, state income tax, federal income tax, capital gains tax, and (for high-value estates) federal estate tax. Each system has its own rules, rates, timing, and planning opportunities. Understanding how they interact is essential for anyone who buys, sells, inherits, or invests in California property.

California Property Tax: Proposition 13 and Its Exceptions

California's property tax system is governed primarily by Proposition 13 (1978), which caps annual property tax at 1% of assessed value and limits annual increases in assessed value to 2% per year. When you buy a property, it is reassessed to the purchase price — establishing your base year value. As long as you own the property and don't trigger a reassessment event, your property taxes grow slowly.

Reassessment events that reset the base year value include:

• Sale or transfer to a new owner (most common)
• New construction or significant improvements
• Certain inheritances under Proposition 19 (see below)

Proposition 19: How Inherited Property Is Taxed

Before February 2021, children could inherit California real property — including rental and investment properties — without triggering property tax reassessment. Proposition 19 eliminated most of this protection. Under Prop 19:

• Most inherited property is reassessed to current market value at transfer
• Only a primary residence transferred to a child who also uses it as their primary residence qualifies for a limited exclusion
• Rental, vacation, and commercial properties have no protection from reassessment

For Bay Area families whose parents bought homes in the 1970s–1990s, this can mean property taxes jumping from $3,000/year to $25,000+/year overnight. See our full Prop 19 guide for strategies.

Capital Gains Tax on California Real Estate Sales

When you sell California real estate at a profit, capital gains tax applies on the gain above your tax basis:

• Federal long-term capital gains rates: 0%, 15%, or 20% depending on income (plus 3.8% Net Investment Income Tax for high earners)
• California state capital gains: Taxed as ordinary income at rates up to 13.3% — California has no preferential capital gains rate
• Combined marginal rate: Can approach 37%+ for high-income California sellers

Primary Residence Exclusion (Section 121)

Homeowners who have owned and used their home as a primary residence for at least 2 of the last 5 years can exclude up to $250,000 of gain ($500,000 for married couples) from federal and California income tax. This exclusion applies regardless of whether you buy another home.

Inherited Property: The Stepped-Up Basis Advantage

Property inherited at death receives a stepped-up cost basis to fair market value — eliminating all embedded capital gains from the original owner's lifetime. A home purchased for $200,000 and inherited at $1,800,000 has a stepped-up basis of $1,800,000 — zero taxable gain if sold immediately. This is one of the most powerful tax benefits in the code for California heirs.

1031 Exchange: Deferring Capital Gains on Investment Property

California investment property owners who sell can defer capital gains taxes by reinvesting the proceeds in another qualifying investment property through a 1031 like-kind exchange. The key rules:

• Both properties must be held for investment or business use (not personal use)
• Replacement property must be identified within 45 days of the sale
• Exchange must close within 180 days of the sale
• A qualified intermediary must hold the proceeds — you cannot receive the funds
• California requires annual reporting (FTB Form 3840) if you exchange into out-of-state property

Real Estate and Federal Estate Tax

Real property is included in your federal taxable estate at fair market value. For California families with multiple properties, this can push an estate above the federal exemption threshold. Strategies to address this include:

• Qualified Personal Residence Trusts (QPRTs) — transfer a primary residence out of the estate at a discounted gift tax value
• Gifting undivided interests in property with valuation discounts
• Installment sales to family members or trusts
• Charitable remainder trusts funded with appreciated real estate