Inherited House Appraisal Process: Fair Market Value and Probate Requirements

Why You Need an Appraisal (and Probably Two)

An inherited house needs a professional appraisal for two distinct reasons, and mixing them up can cost your family thousands.

The date-of-death appraisal establishes the property's fair market value on the exact date the owner died. This sets your stepped-up tax basis — the baseline the IRS uses to calculate capital gains if you sell later. Get this number wrong, and you'll either overpay on taxes or invite an audit.

The current market appraisal tells you what the property is worth today, which matters for a sale listing, a sibling buyout negotiation, or refinancing. If the death was recent, both values may be similar. If months or years have passed, they can diverge significantly.

Many families skip the date-of-death appraisal because no one told them it was necessary. Then they sell the house two years later and discover they owe capital gains taxes on appreciation they could have avoided with proper documentation.

How Fair Market Value Works for Inherited Property

When you inherit a house, the IRS gives you a "stepped-up basis" — your tax basis resets to the property's fair market value on the date of death, not what the original owner paid for it decades ago.

If your parents bought the house in 1985 for $80,000 and it was worth $350,000 when they died, your basis is $350,000. If you sell it for $360,000, you owe capital gains tax on $10,000 — not $280,000.

This step-up applies automatically. You don't need to file a special form to claim it. But you do need documentation to prove the date-of-death value if the IRS ever asks. That's where the appraisal comes in.

For community property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, Wisconsin), both halves of the property get a full step-up when one spouse dies — even the surviving spouse's half. This double step-up can eliminate capital gains entirely on a later sale.

What the Appraiser Actually Does

A certified appraiser will conduct a physical inspection of the property — measuring square footage, noting the condition of major systems (roof, HVAC, plumbing, electrical), documenting upgrades and deferred maintenance, and photographing the interior and exterior.

They then pull comparable sales data: recent transactions of similar properties in the same neighborhood, adjusted for differences in size, condition, lot size, and features. For a date-of-death appraisal, these comps must bracket the date of death, not today's market.

The final report — typically 20–40 pages — includes the appraiser's opinion of value, the methodology used, and the supporting data. It can document the valuation, but whether you submit it to a probate court or tax authority depends on the court's rules and applicable tax filing requirements.

Choosing the Right Appraiser

Not every appraiser handles estate work. You need someone experienced with retrospective (date-of-death) valuations who understands they're establishing a legal record, not just estimating a listing price.

Look for appraisers with the MAI (Member of the Appraisal Institute) or SRA (Senior Residential Appraiser) designation. Ask specifically whether they've done retrospective appraisals for probate cases.

Expect to pay $400–$600 for a standard residential appraisal, potentially more for complex properties, rural locations, or retrospective valuations that require historical comp research. The fee is paid from estate funds — it's a legitimate estate administration expense.

Avoid using a real estate agent's comparative market analysis (CMA) as a substitute. A CMA is a marketing tool, not an appraisal. The IRS generally uses the inherited property's fair market value at death as its basis, while court requirements differ by jurisdiction; an independent appraisal is useful evidence but is not universally required.

Timing Matters

Order the date-of-death appraisal within the first two to four months after the death, while the appraiser can still inspect the property in its death-date condition. If the family has already cleaned out belongings, replaced flooring, or made repairs, those changes can complicate the retrospective valuation.

The probate court typically requires an asset inventory within a few months of appointment — the appraisal feeds directly into that filing. Delays here can hold up the entire probate timeline.

If you're planning to sell, order the current market appraisal closer to listing. Markets move, and an appraisal from six months ago may not reflect current conditions.

When Siblings Disagree About Value

Appraisals often become a flashpoint in family disputes. The sibling who wants to keep the house pushes for a lower valuation (to reduce the buyout price), while the siblings who want to sell push for a higher one.

The solution: agree upfront to use a single independent appraiser, or have each side commission an appraisal and average the results. Put this agreement in writing before anyone orders anything.

If the spread between two appraisals exceeds 10%, something is off — review the comparable sales each appraiser used and look for cherry-picking.

For a structured approach to managing the appraisal process alongside all the other moving pieces, our Selling or Keeping the Family Home After Death toolkit includes a property valuation tracker and sibling buyout worksheet built around the appraisal numbers.