What Should You Know About the Step-Up in Basis When You Inherit a Home in California?
What is the step-up in basis for home values in probate? What do you need to do to establish a step-up basis in California? How does the step-up in basis affect Proposition 13 and Proposition 19 values?
By Maya Bovshow
CEO, Trust Properties USA
Inheriting a home in California often comes with more than a little financial confusion. Beyond the sentimental value of the property, heirs are quickly faced with questions about taxes, timelines, and what steps they need to take to avoid costly mistakes.
One of the most important concepts to understand early is the step-up in basis. When handled correctly, it can significantly reduce capital gains taxes when an inherited property is later sold. When handled incorrectly—or ignored—it can create unnecessary tax exposure that may not surface until many years later, affecting generations to come.
This article is intended for general educational purposes only and is not legal or tax advice. Always consult qualified professionals about your specific situation. Trust Properties USA is here to handle all the details and maximize the return on equity for your family. Call us at (800) 579-4380.
What Is the Step-Up in Basis, and Why Does It Matter?
The “basis” of a property is generally what the original (i.e., the last) owner paid for it, plus the cost of certain improvements. When someone inherits a home, tax law usually allows that basis to be “stepped up” to the property’s fair market value at the date of the owner’s death.
Why does this matter? Because when a property is sold, capital gains taxes are calculated based on the difference between the sale price and the property’s basis. A step-up can dramatically reduce—or even eliminate—capital gains taxes when the home is later sold. The right moves now can dramatically reduce those taxes years down the line.
For example, imagine a parent purchased a California home decades ago for $200,000. At the time of their passing, the home is worth $1,000,000. If the heir later sells the property for $1,020,000, capital gains taxes may apply only to the $20,000 increase after inheritance—not the $820,000 increase that occurred during the parent’s lifetime.
This distinction alone can have a massive financial impact when selling an inherited home in California, which is why early planning matters.
Need help on these issues? Learn more about how Trust Properties USA helps families with inherited property sales on our Our Services page.
Does California Allow a Step-Up in Basis for Inherited Property?
Yes. California follows federal tax rules regarding stepped-up basis for inherited property. Whether a home passes through a trust, probate, a will, or intestate succession, a step-up is generally available.
However, while the law allows it, the step-up is not automatic in practice. Heirs and fiduciaries must properly establish and document the new basis. This often involves coordination between the estate, the attorney, the CPA, and real estate professionals.
Questions about whether a property is in probate or trust administration often arise at this stage, especially when multiple heirs are involved. If you’re unsure how the process applies to your situation, please contact Trust Properties USA as soon as possible at (800) 579-4380.
What Steps Should Heirs Take Right Away to Protect the Step-Up?
One of the most important early steps is establishing the property’s fair market value at the date of death. This is commonly supported by a professional appraisal or other credible valuation evidence—not just a snapshot from Zillow or other online real estate site. Waiting too long can make it harder to justify the value later if questions arise from tax authorities.
Heirs also need to confirm how the property was titled. Trust ownership, joint tenancy, or separate property can all affect how the step-up applies.
Another common issue arises when heirs rush into a sale or title transfer without proper guidance. Selling too quickly—or without documenting the step-up correctly—can create reporting problems that don’t show up until years later.
Is a Professional Appraisal Necessary to Establish a Step-Up in Basis?
Heirs often ask whether a formal appraisal is required to establish a stepped-up basis. Is a broker’s price opinion or letter sufficient?
The answer depends on the specifics of the property and the overall situation. While the IRS does not explicitly mandate an appraisal in every case, a qualified professional appraisal is generally the strongest and most defensible way to document fair market value at the date of death—especially for higher-value or unique properties, or when a sale may occur well after the date of inheritance. A broker’s letter or comparative market analysis may be appropriate in some lower-risk situations, but it can be harder to defend if the valuation is ever questioned. Certainly, do not just search an online property valuation site and print out an estimate. Because each property and timeline is different, sellers are encouraged to contact Trust Properties USA to discuss their specific property and circumstances. Our team can help explain common approaches used in inherited property sales and coordinate next steps alongside your attorney or CPA.
How Do Proposition 13 and Proposition 19 Affect Inherited Homes?
California’s property tax rules add another layer of complexity.
Proposition 13 limits annual property tax increases, but generally resets property taxes to current market value when ownership changes. For many years, children could often inherit a parent’s low property tax base.
Proposition 19 significantly changed those rules. Today, most inherited properties do not retain the parent’s low property tax assessment unless specific requirements are met. In general, the heir must make the property their primary residence and file required paperwork within strict deadlines. Even then, value caps may apply.
It’s critical to understand that Proposition 19 affects property taxes, not capital gains taxes. An heir can receive a step-up in basis for capital gains purposes and still experience a substantial increase in property taxes if Prop 19 rules are not satisfied.
For example, an heir might inherit a rental property, receive a full step-up in basis, and later sell with minimal capital gains tax—yet still face significantly higher annual property taxes while holding the property.
You will want to consult a qualified CPA on these issues, and you may wish to read our four-part series on what to do when you inherit a home in California. You can see real-world examples of how preparation and timing affect outcomes on our Before & After case studies page.
Why Does Timing Matter So Much After You Inherit a Home?
Many heirs assume they can take their time deciding what to do. Unfortunately, delays can work against you. Appraisals become harder to support as markets shift. Filing deadlines under Proposition 19 can be missed. Vacant properties may decline in condition. Carrying costs—insurance, property taxes, utilities, and maintenance—continue to add up.
Early action doesn’t mean rushing into a sale. It means preserving options and avoiding mistakes that can’t be undone later. To learn more, read our blog on timing a probate sale.
How Can Trust Properties USA Help California Heirs?
Trust Properties USA specializes in helping families and fiduciaries sell inherited and estate properties throughout California. While we don’t provide legal or tax advice, we work alongside attorneys and CPAs to help heirs move forward with clarity and confidence.
Our team helps with valuation timing, sale strategy, and preparing inherited homes for the market through our Fix & Sell approach—often with zero upfront cost. You can learn more about our background and experience on our About Us page.
Are You Considering Selling an Inherited Home in California?
If you’ve inherited a property and are unsure how the step-up in basis, Proposition 19, or timing issues apply to your situation, a conversation with Trust Properties USA can help clarify your options.
Call us today at (800) 579-4380 to speak with a compassionate, experienced professional, or contact us online to discuss your inherited property situation. We handle everything from insurance challenges, clean-outs, tenant issues, much more during probate sales–all in full compliance with California law, and with no upfront costs to you.
Final reminder: This article is for general informational purposes only and does not constitute legal or tax advice. Always consult qualified professionals regarding your specific circumstances.
Best, Maya
Maya Bovshow, CEO, Trust Properties USA
Maximizing the equity your family took a lifetime to build.
If you are dealing with a property in probate or trust, call us today at 📞 1-800-579-4380