Can an appraisal be done for a past date, and how far back can it go?

Yes, an appraiser can go back in time (on paper)

Most appraisals answer one question: what is this house worth today? A retrospective appraisal answers a different one: what was this house worth on a specific day in the past?

The work looks the same from the outside. I still pick comparable sales (comps), adjust them and reconcile to a value. The difference is that every piece of evidence has to come from the market as it stood on that past date. The sales I lean on are the ones buyers and sellers were looking at back then, not the ones that closed last week.

The most common reason people need one is a death in the family. Kiplinger points out that months or even years can pass before anyone deals with the tax basis on an inherited home. By the time the CPA asks for a date-of-death value, the house may already be painted, staged and half sold. That is fine. A retrospective appraisal is built for exactly this.

Other times you see them: a divorce with a court-set valuation date, a trust that needs a value at a past funding date, or a dispute where the question is what the house was worth when something happened.

The date that matters is the effective date, not the report date

Every appraisal has two dates. The effective date is the day the value applies to. The report date is the day I sign it. In a retrospective appraisal those can be far apart, and that is normal.

For inherited property, federal tax law sets the date for you. Under Internal Revenue Code section 1014, the basis of inherited property is generally its fair market value at the date of death. If the executor elects the alternate valuation date under section 2032, it is the value on that later date instead, which is generally six months after death. Neither rule cares when the report was written.

So an appraisal done today can still be the right appraisal for a death that happened two years ago. What it cannot do is quietly use today's market. If prices have jumped since the date of death, that jump is not part of the value. If prices dropped, that drop is not part of it either.

This is general information. How the basis is used on a return depends on the facts, so your CPA or tax attorney should confirm how the value fits your situation.

Condition is frozen on the effective date too

Here is where families get tripped up. The value has to reflect the house as it was on that past date, not after the new floors went in.

Kiplinger makes the same point: the home should not be renovated, repaired or staged before its baseline state is documented. Say Mom's house had the original 1978 kitchen and a roof that was on its last legs when she passed. If the family spends six months fixing it before calling an appraiser, I have to value the old kitchen and the tired roof, not the shiny new ones. The new quartz counters are lovely. They are also legally invisible.

That is why the most useful thing an heir can do is take photos early. Phone photos are fine. Walk every room, the outside, the roof if you can see it, and anything broken. Date stamps help. A lot of retrospective work is detective work, and photos are the best fingerprints you can leave me.

So how far back can it really go?

There is no single calendar cutoff for how far back a retrospective appraisal can go. In my experience the limit is practical, not legal. The question is whether enough evidence survives to support a credible opinion.

Here is what I need from the past date:

• Sales from that time. Closed sales near the subject that sold around the effective date. Older MLS records and public records usually go back a long way.
• A read on the market at that moment. I measure what prices were doing in the weeks and months around the date, not a lazy 12-month average that blends in a different market.
• The home's condition then. Photos, listing photos, permits, insurance claims, an old inspection report, or a prior appraisal.
• The home's features then. Square footage, room count, lot size and any additions, as they existed on that date.

A date of death from last year is usually easy. A date from decades ago is harder, mostly because condition evidence fades faster than sales records. The further back you go, the more the report has to explain what was known, what was assumed, and why. Facts over feelings still applies, even when the facts are dusty.

What to gather before you call an appraiser

1. The exact effective date. For an estate, that is usually the date on the death certificate. If your CPA mentions the alternate valuation date, ask whether you need a second value six months later.
2. Photos from as close to that date as possible. Family photos count. So do old listing photos if the house was ever on the market.
3. A list of changes since then. Anything repaired, removed, added or remodeled after the effective date, with rough dates.
4. Documents. Permits, prior appraisals, inspection reports, insurance claims and the property tax bill.
5. Who will read it. Tell the appraiser whether this is for the IRS, a court, a trustee or a buyout between siblings. The intended use shapes the report.
6. Do not renovate first if you can avoid it. If you have already started, that is fine. Just keep the before photos.

What I see in the field

A big share of my practice is estate, probate and trust work, so I do a lot of these. The pattern I see most is a family that waited, cleaned up, and now worries the appraisal is ruined. It usually is not. The market from that date is still on record. The job is to rebuild the house as it was and price it against what was selling then.

A good retrospective report teaches the reader the market at that moment. It shows the sales, explains why each one matters, and says plainly how condition was established. That matters if the IRS ever asks how the basis was set. Kiplinger notes a formal appraisal can serve as objective documentation if the basis is audited. A number with no paper trail is a guess. A number with a paper trail is a defense.