Retrospective valuation: a property's value at a past date (death, gift, purchase)

1. What is a retrospective valuation?

It is a valuation whose valuation date precedes the date of the report. The question is not what the property is worth today, but what it was worth, for example, on the day of a death, a gift or a purchase. The difference is one of method: all the data (comparable sales, condition of the property, neighbourhood context) must relate to that date, not to the date of writing. On why the valuation date matters, see our article on how long a report stays valid and the valuation date.

The result is a market value at the requested date, single and reasoned, with every assumption written down.

2. Why would you need one?

Three situations come up most often.

• Inheritance. Heirs want the value of the property on the day of death, for an inventory, a partition or a buy-out of shares. See valuation for inheritance.
• Basis of a future capital gain. For an inherited property, the acquisition price used at resale is the market value on the day of death (article 65-II of the General Tax Code, as presented in our article on inheritance and the acquisition price). Documenting that value at the right time avoids rebuilding it years later. For the calculation rules we refer to that article: they are not the subject of this one.
• Gift or older purchase. The owner wants a record of value at the date of the deed, for example for a split between children or a comparison with today's value. The date used depends on the rule that applies in each situation, to be confirmed with a notary. See also hiba donations.

3. How the appraiser rebuilds the market at that date

The appraiser cannot simply use today's prices, nor "deflate" them with a coefficient. He rebuilds the market of the time from dated sources:

• Sales of the time: deeds and transaction references close to the date, in the same area and for the same type of property, where accessible.
• Archived offers and listings, where they exist, treated with caution: a listing is an asking price, not a price paid.
• Local context at the date: roads, amenities, urbanisation of the area, zoning in force at that moment.
• Documents specific to the property: land title, plans, permit, photos and testimony of the time.

Comparison values are those of the date, never updated afterwards. Each reference used is cited with its source in the report, which makes the approach verifiable line by line.

4. Rebuilding the condition of the property at that date

The property may have changed since: works, extension, decay, demolition. A retrospective valuation covers the property as it was at the date, not as it is today. The appraiser therefore looks for traces of its condition then:

• dated photos, plans and permits;
• title deed, ownership certificate, older descriptions;
• testimony (heirs, neighbours, contractors involved), recorded as such;
• a record of the current condition, compared with these elements to spot what has changed.

Where nothing shows for certain what the property was like, the appraiser sets a written assumption(for example "property consistent with the permitted plans") and states how it influences value. This is the core of an honest retrospective valuation: separating what is established from what is assumed.

5. The limits of the exercise

A retrospective valuation is not as precise as one at today's date. Its limits are worth knowing:

• Less data. Sales of the time are harder to find than those of the current market, especially if the date is old or the area quiet.
• Uncertain condition. If nothing was documented at the date, condition is inferred from indirect traces.
• No hindsight. The appraiser places himself at the date: he does not use what became known later (a later zoning change, an amenity built since).
• Evidence fades. The longer you wait, the harder it is to gather.

That is why the best solution remains to establish the value at the time of the event, while documents and memories are fresh, rather than rebuild it later. A retrospective report is still useful when that was not done, but it says so honestly.

6. What the report contains

A retrospective report follows the same logic as a current one, with precautions specific to the date:

• the valuation date and the purpose of the request, up front;
• the description of the property at the date and of its current condition, kept separate;
• the dated sources used (sales, references, documents), cited one by one;
• the written assumptions where a document is missing, with their effect on value;
• a single reasoned value, with no range;
• the limits of the exercise, stated clearly.

The report is documented and verifiable line by line: each heir, notary or other reader can follow the reasoning and discuss it. It binds no one.

7. Retrospective or current: do not confuse them

An owner sometimes needs both values: yesterday's and today's. That calls for two distinct valuation dates, each with its own data. A current value is not corrected by an index to find the past value, and a past value is not updated to obtain today's.

Comparing the two helps explain the change (works, neighbourhood, market), not derive one from the other. The report can present both dates side by side, on the same property, with the same level of documentation. For an inherited property, the value at the date of death and the value at the date of resale are two separate questions, each dealt with on its own.

State your need at the outset: the date concerned, the purpose (partition, family record, resale) and the documents you hold. That avoids a report that answers the wrong question.

8. What to give the appraiser

• The exact date concerned (death, deed of gift, purchase deed) and the purpose of the request.
• The land title or ownership certificate, and the inheritance deed or the deed concerned.
• Plans, permits and photos of the time, if any.
• The history of works carried out since that date.
• References of nearby sales you know of, recorded as such.
• Contact for access to the property for the current visit.

If you need to compare the value at the date with the current value, say so: the report can present both dates, clearly separated.

9. FAQ

Note: The valuation date used and the rules applying to an inheritance, a gift or a resale fall under the texts in force; each situation has its own features. This article is methodological and does not replace the advice of a notary. To have a property valued at a given date, see our real estate appraisal page.