---
title: "Step-Up Basis for California Real Estate: How It Works"
url: https://farimarealty.com/step-up-basis-for-california-real-estate-how-it-works/
date: 2026-10-02
modified: 2026-10-02
lang: en
author: "Farima Tabiriz"
description: "A plain-English guide for executors on how the step-up in basis resets inherited California real estate to its date-of-death value, including the community property double step-up, documentation requirements, and how it differs from Prop 19 property tax rules."
categories:
  - "Selling Home"
  - "Trust Sale"
image: https://farimarealty.com/wp-content/uploads/2026/10/photo-1759355787174-044355f63c55-1024x683.jpg
word_count: 3503
---

# Step-Up Basis for California Real Estate: How It Works

If you have been told to sell the inherited property "soon" to take advantage of the step-up in basis, and you are nodding along without fully understanding what that means, you are in good company. Most executors hear this phrase from an attorney or CPA, absorb the general idea that it is somehow good for taxes, and then move on to the hundred other tasks demanding attention. But the step-up in basis is one of the most significant tax provisions affecting inherited California real estate, and understanding how it works can change the entire financial picture for the estate and the beneficiaries.

The concept itself is straightforward. When someone dies, the tax basis of their property resets to its fair market value on the date of death. Under [IRC Section 1014(a)](https://uscode.house.gov/view.xhtml?req=(title:26+section:1014+edition:prelim)), the basis of property acquired from a decedent becomes the fair market value of that property at the date of the decedent's death. This single rule can wipe out decades of accumulated appreciation for capital gains tax purposes. For a San Diego home purchased in the 1980s or 1990s that has appreciated five, six, or sevenfold, the step-up in basis is not a minor tax benefit. It is the difference between owing substantial capital gains tax and owing almost none.

## What the Step-Up in Basis Does for California Real Estate

The step-up in basis erases accumulated appreciation on inherited property by resetting the tax basis to fair market value at the date of death. For California real estate, where home values have risen dramatically over decades, this provision matters more than almost any other tax rule affecting the estate.

Here is the mechanics in plain terms. Every piece of real estate has a "basis," which is essentially the tax system's record of what the property cost to acquire, adjusted over time for improvements and depreciation. When you sell property, you pay capital gains tax on the difference between the sale price and the basis. A home bought in 1985 for a fraction of its current value has a very low basis, which means a very large potential capital gain if sold.

The step-up in basis replaces that old, low basis with the fair market value as of the date of death. If the property is sold shortly after death for a price close to the date-of-death value, the capital gain is minimal or zero. Decades of appreciation simply disappear from the tax calculation.

This matters enormously in California for a specific reason: California does not offer preferential tax rates for long-term capital gains. While the federal government taxes long-term capital gains at 0%, 15%, or 20% depending on income, California taxes all capital gains as ordinary income at the state's progressive rates, which reach up to 13.3% for high-income filers, according to the [California Franchise Tax Board](https://www.ftb.ca.gov/). Combined with the federal rate and the 3.8% Net Investment Income Tax for high earners, the total tax rate on a capital gain in California can reach 37.1% at the top brackets. The step-up in basis can eliminate the gain that would otherwise be taxed at these rates.

If you are an executor weighing whether to sell the inherited property or hold it, the step-up in basis is the starting point for that decision. It is also the reason someone told you to sell "soon." The step-up happens automatically at death, but the tax benefit is greatest when the property is sold at a price close to the date-of-death value. The longer you hold the property after death, the more it may appreciate beyond the stepped-up basis, creating a new layer of taxable gain. For a broader framework on the keep-versus-sell decision, see our guide on [inheriting a paid-off house and your next steps](https://farimarealty.com/inheriting-a-house-that-is-paid-off-your-next-steps/).

## How the Date-of-Death Valuation Works

![Real estate professional reviewing property valuation documentation with clients inside a home](https://farimarealty.com/wp-content/uploads/2026/10/photo-1714647212027-2a0ad30cb4f1-1024x576.jpg)

The date-of-death valuation is the anchor for the stepped-up basis. It must be a defensible fair market value, established by a qualified professional, and documented thoroughly enough to withstand scrutiny from the IRS or from beneficiaries who may later question the numbers.

### Who Determines the Date-of-Death Value

In a California probate proceeding, the court appoints a Probate Referee under Probate Code Section 8800 to appraise estate assets, including real property. The Probate Referee's appraisal establishes the inventory value of the estate for probate purposes. Many executors assume this appraisal also establishes the tax basis, and in practice, the referee's valuation is often used for that purpose.

However, the IRS looks for fair market value as of the date of death, and the strongest documentation is a professional appraisal performed by a qualified, independent real estate appraiser who specializes in date-of-death valuations. This appraisal should follow the Uniform Standards of Professional Appraisal Practice (USPAP) and should be contemporaneous, meaning it was prepared as close to the date of death as practical, using comparable sales from that period.

If the estate is large enough to require a federal estate tax return (Form 706), the value reported on that return controls the basis under the consistency requirement in IRC Section 1014(f). This means the basis the beneficiaries claim when they eventually sell the property cannot exceed the value reported on the estate tax return. If you overstate the basis on the beneficiaries' tax return but reported a lower value on Form 706, the IRS can impose accuracy-related penalties under the consistency rules.

### The Alternate Valuation Date

Under IRC Section 2032, the executor can elect to use the value of the property six months after the date of death instead of the date of death itself. This election is only available if the executor files a timely federal estate tax return (Form 706) and affirmatively makes the election on that return. If the property's value declined during the six-month period after death, this election can produce a lower, more favorable basis for the beneficiaries.

In practice, most estates in California are not required to file Form 706 because the estate's value falls below the federal estate tax exemption threshold. For those estates, the date of death is the valuation date, period. There is no alternate valuation election available without filing the estate tax return. Your CPA or estate attorney can confirm whether the estate is required to file Form 706.

### What Documentation You Need

Regardless of whether an estate tax return is filed, you should obtain and retain the following documentation to establish the stepped-up basis:

- A professional real estate appraisal dated as close to the date of death as possible, prepared by a licensed appraiser
- The Probate Referee's Inventory and Appraisal (Form DE-160), if the estate is in probate
- The death certificate, which establishes the date of death that anchors the valuation
- Records of any improvements made between the date of death and the date of sale, which adjust the basis upward
- Records of any depreciation taken after death, if the property was rented, which adjusts the basis downward
- Form 706 and Schedule A to Form 8971, if the estate filed an estate tax return, which locks in the value under the consistency rules

Keep these records with the estate's tax files. If the property is not sold immediately but is held by the beneficiaries for years before a sale, the date-of-death appraisal is what establishes their basis. Without it, they may be unable to prove the stepped-up basis and could face a much larger tax bill than necessary. For a broader overview of your recordkeeping obligations as executor, see our guide on the [duties of a California probate executor](https://farimarealty.com/what-are-the-duties-of-a-probate-executor-in-california/).

## California Community Property and the Double Step-Up

![Two people reviewing real estate ownership documents at a table, illustrating community property title and spousal ownership in California](https://farimarealty.com/wp-content/uploads/2026/10/photo-1775163024488-e88e4a71179f-1024x683.jpg)

If the decedent was married and the property was held as community property, California offers something most states do not: a double step-up in basis. Under IRC Section 1014(b)(6), when one spouse dies, both halves of community property step up to fair market value, not just the deceased spouse's half. The surviving spouse's own half, which they already owned and never inherited, also resets to the date-of-death value.

This is a significant advantage. In most states, when a jointly owned property passes at death, only the deceased owner's share gets a step-up. The surviving co-owner's share keeps its original basis. But in California and the other community property states, the entire property gets a fresh basis if it qualifies as community property under state law.

### When the Double Step-Up Applies

Under California Family Code Section 760, property acquired during marriage is presumed to be community property. If the decedent and their spouse bought the home together during the marriage using community earnings, the property is community property, and the double step-up applies at the first spouse's death. The entire basis resets to fair market value, not just half.

This means a surviving spouse can sell the property shortly after the first spouse's death and owe little or no capital gains tax on the entire sale, even though they only "inherited" half the property. The other half, which they already owned, also received a step-up. For properties held for decades in San Diego, where appreciation has been substantial, this can eliminate a tax liability that would otherwise reach well into six figures.

### When the Double Step-Up Does Not Apply

The double step-up does not apply to separate property. If the home was the deceased spouse's separate property, perhaps inherited from their own parents or purchased before the marriage and never transmuted to community property, only the deceased spouse's share gets a step-up. The surviving spouse's share, if any, keeps its original basis.

Determining whether property is community or separate is not always straightforward. Under California Family Code Section 770, property owned before marriage, or acquired during marriage by gift or inheritance, remains separate property by default. A home purchased with one spouse's separate inheritance but titled in both names can raise complex characterization questions. Since 1985, California has required a written transmutation agreement under Family Code Section 852 to change the character of property between spouses. Simply adding a spouse's name to a deed, without an express written declaration that the property's character is changing, is generally not enough to convert separate property into community property for tax purposes.

### Joint Tenancy Between Spouses

Property titled in joint tenancy between spouses presents a common trap. Joint tenancy is a form of co-ownership, but it is not the same as community property for tax purposes. When one joint tenant spouse dies, only the deceased spouse's half of the property receives a step-up in basis. The surviving spouse's half keeps its original basis.

However, property titled in joint tenancy between spouses can still be community property in substance if it was acquired with community funds during the marriage. What matters for the full 1014(b)(6) step-up is the underlying community property character, not just how title reads on the deed. This is a question that requires reviewing the deed, the source of funds used to purchase the property, and any transmutation agreements in the estate planning documents. Do not assume the answer based on title alone.

If the decedent held title as "community property with right of survivorship," which California has recognized since 2001, the surviving spouse gets both the survivorship transfer and the full community property double step-up. This is the cleanest outcome. But many older deeds in San Diego still read "joint tenancy," which may not deliver the double step-up even if the property was functionally community property.

## A San Diego Example: Stepped-Up Basis in Action

To see the difference clearly, consider a representative San Diego home purchased decades ago that has appreciated significantly. Rather than using specific dollar figures, which vary widely by neighborhood and property, the table below uses relative percentages to show how the step-up in basis changes the capital gains calculation.

Assume a home was purchased in the 1980s or early 1990s, a period when San Diego home prices were a fraction of today's values. For many properties bought in that era, the original purchase price represents roughly 15% of the home's current fair market value, meaning the property has appreciated approximately sixfold. The combined California and federal capital gains tax rate at the top brackets reaches 37.1%, consisting of the 20% federal long-term rate, the 13.3% California state rate, and the 3.8% Net Investment Income Tax.

| Metric | Without Step-Up (Gift Scenario) | With Step-Up (Inheritance) |
| ------ | ------------------------------- | -------------------------- |
| Original cost basis (as % of date-of-death FMV) | ~15% | ~15% (before death) |
| New basis at death | ~15% (unchanged) | 100% (reset to FMV) |
| Sale at date-of-death value: taxable gain | ~85% of sale price | 0% of sale price |
| Sale at date-of-death value: est. tax at 37.1% | ~31.5% of sale price | $0 |
| Sale 8% above DOD value: taxable gain | ~93% of sale price | ~8% of sale price |
| Sale 8% above DOD value: est. tax at 37.1% | ~34.5% of sale price | ~3% of sale price |

The "Without Step-Up" column shows what would happen if the property had been transferred as a gift during life rather than passing at death. When you receive property as a gift, you inherit the giver's original basis. There is no step-up. This is why gifting appreciated real estate during life can create a massive tax burden for the recipient, while holding the property until death and letting it pass through the estate can eliminate that burden entirely.

The difference is stark. On a home where the original basis represents 15% of current value, selling without the step-up means roughly 85% of the sale price is taxable gain. At the top combined California rate of 37.1%, the tax would consume approximately 31.5% of the entire sale price. With the step-up, selling at the date-of-death value produces zero taxable gain. Even if the property appreciates 8% after death before the sale closes, the taxable gain is only about 8% of the sale price, and the tax is roughly 3%.

This is why someone told you to sell "soon." The step-up happens at death regardless of when you sell, but every dollar of appreciation after the date of death creates new taxable gain on top of the stepped-up basis. Selling relatively close to the date of death, when the sale price is still near the date-of-death value, maximizes the tax benefit.

## Step-Up Basis and Prop 19: Two Separate Rules That Often Get Confused

![Tax withholding forms, calculator, and phone on a desk representing the separate tax rules governing capital gains and property tax on inherited California real estate](https://farimarealty.com/wp-content/uploads/2026/10/photo-1554224154-26032ffc0d07-1024x720.jpg)

Executors frequently conflate the step-up in basis with Proposition 19, and it is easy to see why. Both rules affect inherited California real estate, both involve the date of death, and both have significant financial consequences. But they operate in completely different tax systems. The step-up in basis affects capital gains tax, which is an income tax on the profit from selling the property. Proposition 19 affects property tax, which is an annual ad valorem tax based on the assessed value of the property. They are independent of each other, and understanding one does not mean you understand the other.

| Factor | Step-Up in Basis (IRC 1014) | Proposition 19 |
| ------ | --------------------------- | -------------- |
| Type of tax affected | Capital gains tax (federal + California income tax) | Property tax (annual ad valorem assessment) |
| What it resets | The property's tax basis to date-of-death FMV | Whether the property keeps the parent's low assessed value |
| When it matters | When the property is sold | Every year the property is held |
| Who benefits | The estate or beneficiaries selling the property | A child who inherits and moves in as primary residence |
| Automatic? | Yes, at death, for property passing through the estate | No, requires filing a claim and meeting occupancy requirements |
| Key condition | Property must pass from the decedent at death | Child must make it their principal residence within one year |
| Value limit | No dollar cap on the step-up itself | Exclusion capped at factored base year value plus $1,044,586 (through Feb 15, 2027) |

The practical implication of this distinction is that a beneficiary can benefit from the step-up in basis but lose the Prop 19 property tax exclusion, or vice versa. For example, if a child inherits a home and sells it immediately, the step-up in basis minimizes the capital gains tax on the sale, but Prop 19 is irrelevant because the property is not being kept. If a child inherits a home and moves in, they may qualify for the Prop 19 exclusion to keep the parent's low property tax assessment, and the step-up in basis protects them if they later sell. But if the child inherits and rents the property out, they get the step-up in basis (good for capital gains when they eventually sell) but no Prop 19 exclusion (the property is reassessed at full market value for annual property taxes).

This is one of the most common points of confusion for executors and beneficiaries. A family member may hear "the property tax goes up" and assume that means they will owe a large tax bill when they sell. Or they may hear "the basis steps up" and assume that means the property taxes stay low. Neither assumption is correct. These are separate rules in separate tax codes, and they need to be evaluated independently. For a detailed walkthrough of how Prop 19 works, including the value cap and filing deadlines, see our guide on [inheriting a paid-off house in California](https://farimarealty.com/inheriting-a-house-that-is-paid-off-your-next-steps/).

## Frequently Asked Questions

Below are the questions executors most commonly ask about the step-up in basis on inherited California real estate.

## Questions About Your Inherited Property's Tax Picture?

You do not have to figure this out alone, and you do not have to commit to anything to have a conversation. If you are an executor or trustee trying to understand the tax implications of selling inherited real estate in San Diego County, a 30-minute call can save you weeks of uncertainty and help you avoid mistakes that create unnecessary tax liability or beneficiary disputes. Farima Realty has guided San Diego families through probate and trust real estate sales for 24 years, and we understand how the step-up in basis, community property rules, and Proposition 19 interact in practice. Call (858) 382-8698 or reach out through the contact form, and Farima (SRES, Broker, 24 years of experience) will personally respond.

## Frequently Asked Questions

### Does the step-up in basis apply if the property is held in a living trust?

Yes. The step-up in basis under IRC Section 1014 applies to property held in a revocable living trust just as it does to property held in the decedent's individual name. Because a revocable trust is a grantor trust for income tax purposes, the trust's assets are included in the decedent's gross estate and qualify for the step-up. The successor trustee selling trust property gets the same stepped-up basis as an executor selling probate property. The key is obtaining a date-of-death appraisal to establish the fair market value.

### How long after the date of death do I have to sell to benefit from the step-up?

There is no deadline. The step-up in basis occurs automatically at death and is permanent. However, the tax benefit is greatest when the property is sold at a price close to the date-of-death value. Any appreciation that occurs after the date of death creates new taxable gain on top of the stepped-up basis. If the property sits for years and appreciates significantly, the gain on that post-death appreciation is taxable. Selling relatively soon after death maximizes the benefit, but there is no statutory window after which the step-up disappears.

### What if the property's value has dropped since the date of death?

If the property is sold for less than the stepped-up basis (the date-of-death fair market value), the result is a capital loss rather than a gain. However, capital losses on the sale of personal-use property, including a primary residence inherited and not converted to investment use, are generally not deductible. If the property was held as investment or rental property after inheritance, the loss may be deductible. If the estate filed a Form 706 and the executor elected the alternate valuation date under Section 2032, the basis would be the value six months after death instead, which may better reflect a declined market. Consult your CPA about the specific situation.

### Does the step-up apply to inherited rental property or only primary residences?

The step-up in basis under IRC Section 1014 applies to all property acquired from a decedent, regardless of whether it was a primary residence, rental property, or vacant land. However, for rental property, there is an important nuance: any depreciation the decedent claimed during life reduces the basis, and the step-up resets the basis to fair market value, which effectively eliminates the accumulated depreciation. After death, if the property continues to be rented, the new owner begins depreciating the property based on the stepped-up basis. The step-up does not distinguish between property types.

### Can I use the Probate Referee's appraisal to establish the stepped-up basis, or do I need a separate appraisal?

The Probate Referee's Inventory and Appraisal (Form DE-160) establishes the value for probate court purposes, and it is generally accepted as evidence of fair market value for basis purposes. However, the IRS gives greater weight to a professional appraisal performed by a qualified, independent real estate appraiser, especially one who follows USPAP standards and specializes in retrospective date-of-death valuations. If the estate filed a Form 706, the value on that return controls the basis under the consistency requirement in Section 1014(f). Best practice is to obtain both the Probate Referee's appraisal and a dedicated date-of-death appraisal, and ensure the values are consistent.