Inheriting a long-held family home can carry a real capital-gains advantage, because property passing at death generally takes a new basis tied to its value on that day. On a house held for decades, that difference can be large.

It is still only one part of the decision. What your parents need from the house and from their money comes first, and the gap may be smaller than you expect — particularly if one parent has already died, which can adjust the basis of a California community-property home well before any inheritance.

Your CPA can confirm the basis and the exclusion. I can tell you what the house would sell for, what it would take to get there, and what it costs to keep — the part your family needs before any of the tax questions can be answered properly.

Inheriting a longtime family home can offer a substantial capital-gains tax advantage. But that does not automatically make waiting the best decision for your parents.

Their comfort, care needs, finances, and wishes belong at the center of the conversation. So does a realistic understanding of the house: what it could sell for, what needs attention, and how much work a sale would actually require.

You do not need to decide whether to sell before asking what your options look like.

I help families in Palo Alto and nearby communities understand the property side of that decision, so they can bring useful numbers to their CPA and estate-planning attorney — and make a plan with fewer unknowns.

Why inheriting can make such a difference

Inherited property generally receives a new income-tax basis tied to its fair market value at death, subject to applicable exceptions. In an appreciating market, this is often called a “step-up in basis.” A subsequent sale near that value may produce little taxable gain.¹

Here is a simplified illustration:

Parents sellHeirs sell
Sale price$4,000,000$4,000,000
Assumed basis$180,000$4,000,000
Gain$3,820,000$0

Parents sell is a sale during their lifetimes; heirs sell is a sale after inheriting. Gain is shown before selling costs and any exclusion, and the illustration assumes a full basis adjustment to $4 million at inheritance. It leaves out improvements, selling costs and other adjustments to show the difference clearly. It is not an estimate of anyone’s tax bill.

Eligible homeowners may exclude up to $250,000 of gain, or $500,000 for qualifying married couples filing jointly.² Even so, a home owned for decades may have substantial remaining gain.

The number to establish is the home’s current adjusted basis, not simply its original purchase price. Improvements and previous ownership events can change it.¹

If one parent has already died, check the numbers again

This can change the entire conversation.

For qualifying California community property, the death of one spouse generally adjusts the basis of the entire property to fair market value — not just the deceased spouse’s half — when the estate-inclusion requirement is met. Different ownership arrangements can produce different results.¹

A qualifying surviving spouse may also retain the $500,000 home-sale exclusion for a sale within two years of the spouse’s death, subject to IRS conditions.²

Before assuming your surviving parent faces decades of taxable appreciation, ask their CPA to confirm the basis and available exclusion. The difference between selling now and waiting may be much smaller than your family expects.

What would selling make possible for your parents?

Perhaps the house has become too much to maintain. Perhaps your parents want to live closer to family, move somewhere more manageable, or use the equity to pay for care.

Those are substantial reasons to consider a sale. A plan should account for what your parents need from their home and their money today, alongside what may eventually pass to the next generation.

If they are comfortable staying and can afford the upkeep, holding the home may fit their wishes. If the house is creating financial pressure or daily difficulty, it is worth comparing the alternatives now.

Moving out and selling are also separate decisions. Your family can evaluate a move alongside the cost and responsibilities of keeping the property.

Keeping the house needs a plan, too

Who will arrange repairs, monitor the property, and pay the ongoing bills? If it will be vacant, what insurance coverage is needed? If renting is an option, who will manage it?

Property taxes also deserve a separate conversation. The income-tax basis adjustment at inheritance does not preserve the parents’ property-tax assessment. Under Proposition 19, a qualifying parent-child family-home exclusion generally requires an eligible child to make the home their principal residence and file for the applicable exemption within one year. Value limits and other requirements apply; even a qualifying transfer can receive a partial reassessment.³ The Proposition 19 arithmetic is worked out here.

Leaving an inherited home vacant or renting it generally will not qualify for that family-home exclusion. But vacancy alone does not trigger Proposition 19 reassessment while the parents still own the home.³

Your advisers can help distinguish the costs of holding it now from the costs that may follow a transfer.

If a parent has moved into care, do not assume the exclusion is lost

Special rules may help an owner who becomes physically or mentally unable to care for themselves. If they lived in the home for at least 12 months within the five years before selling, time in an appropriately licensed care facility can count toward the two-year residence requirement. Other eligibility requirements still apply.²

Ask the CPA to review the dates before making a decision based on an assumed tax deadline.

Start with the house—not a renovation project

One of the most useful first steps is finding out what a sale would involve before anyone begins clearing rooms or hiring contractors.

I can help your family compare:

  • Selling in its current condition: a likely price range and the work needed to bring it to market.
  • Preparing it selectively: which improvements may strengthen the result, their estimated cost, and the time involved.
  • Planning for a later sale: what to maintain now and what can wait until your family is ready.

For a home filled with decades of belongings, the logistics can feel as significant as the financial decision. I can coordinate estate-sale resources, preparation, and staging as part of a sale plan, with a clear scope and budget before work begins.

You can take those property estimates to your CPA to compare after-tax proceeds. Your estate-planning attorney can review ownership and authority to act, including what happens if a parent can no longer manage the transaction personally.

You can ask for help before you are ready to sell

You may be planning years ahead, helping a parent consider a move, or simply trying to understand what the family home could make possible.

We can start with a conversation about the house, your parents’ priorities, and the questions your family has. From there, I can help you understand its likely sale range and preparation options — without asking you to make a listing decision first.


Sources. ¹ IRS Publication 551, Basis of Assets — inherited property, adjusted basis, and community property · ² IRS Publication 523, Selling Your Home — home-sale exclusions, surviving spouses, and care-facility rules · ³ California Board of Equalization, Proposition 19 — family-home transfers and reassessment exclusions

General information, not legal or tax advice. Maggie is a licensed California real estate agent, not an attorney, an accountant or a tax adviser. Consult your CPA and estate-planning attorney about your family’s tax, ownership and inheritance questions. The examples address capital gains, not a complete estate-tax analysis.

These guides provide general information, not legal or tax advice. Maggie handles the real estate aspects of a sale. Consult an estate-planning attorney and qualified tax adviser about ownership, inheritance, and tax decisions for your circumstances.

Maggie Ma Keller Williams Palo Alto · DRE #02117367 Updated

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