How is the market value of a probate property determined?

A probate property’s market value is established through a date-specific, evidence-led assessment rather than by relying on an asking price or an informal opinion. The valuer forms an opinion of what the property would have sold for between a willing buyer and willing seller, acting knowledgeably and without either party being under undue pressure. The valuation basis and effective date must be stated clearly because a figure prepared for inheritance tax or estate administration may not be the same as a later selling price.

The first step is to clarify the purpose of the valuation. An executor may need a formal figure for inheritance tax reporting, a working value for distributing the estate, or an indication of the likely proceeds from a future sale. These purposes can involve different assumptions. For example, a market valuation normally considers a properly marketed sale, whereas an auction estimate, insurance assessment, forced-sale figure or cash purchase offer is based on a different set of circumstances.

For probate, the relevant date is commonly the date of death. This means the valuer may need to provide a retrospective opinion using information that was available at that time, rather than simply reporting the property’s current value. Market conditions, buyer demand, lending conditions and nearby transaction evidence can change between the valuation date and the date of inspection. A later sale may therefore support the assessment without automatically proving that the same price applied on the earlier date.

A robust assessment usually follows a process similar to this:

1. Review the instruction and estate documents. The valuer confirms the property address, ownership interest, valuation date, intended use of the report and any assumptions requested by the executor. The title, plan, tenancy information and planning documents may also be relevant.
2. Inspect the property where appropriate. The inspection helps identify the layout, accommodation, condition, alterations and features that could affect buyer demand. If access is unavailable, the valuer should record the limitation and explain how it affects the reliability of the opinion.
3. Analyse relevant transaction evidence. Completed sales are generally more useful than asking prices because they show what buyers actually paid. The valuer adjusts the evidence for differences in timing, property characteristics, position, presentation and circumstances, rather than applying an unexplained average.
4. Consider the legally saleable interest. The value may depend on whether the property can be sold with vacant possession, is subject to a tenancy, has shared ownership, or carries title matters that affect use or transfer. Planning history, rights of way, lease terms and restrictions can require additional investigation.
5. Reach and document a reasoned conclusion. The report should explain the valuation basis, effective date, evidence considered, assumptions, limitations and resulting figure. A clear audit trail is particularly important where the value may be reviewed by beneficiaries, accountants or HMRC.

The condition assessment is not limited to visible decoration. A valuer may take account of defects, deferred maintenance, non-standard construction, previous alterations, signs of structural movement and the likely effect of required work on buyer demand. The cost of repairs is not always deducted pound for pound: buyers may also allow for disruption, risk, uncertainty and the time needed to complete the work. Specialist reports may be appropriate where the inspection identifies an issue outside the valuer’s expertise.

Location is assessed in practical terms, including access, surrounding development, environmental factors, local amenities and the property’s appeal to likely buyers. Comparable evidence should be sufficiently similar to provide a meaningful comparison. A large number of loosely comparable listings is less persuasive than a smaller group of well-researched completed transactions supported by an explanation of the adjustments made.

The executor should also distinguish between the property itself and other estate assets. Fixtures that form part of the property may be included in the real estate assessment, while furniture, personal possessions and removable contents are generally dealt with separately. Where the estate includes development potential, land, outbuildings or mixed-use elements, the valuer may need to consider more than the value of the existing residential use, while remaining realistic about planning prospects and associated costs.

A formal probate valuation should not be confused with the price eventually achieved. The eventual sale can be affected by marketing quality, the chosen method of sale, negotiations, chain-related considerations and changes in the market after the valuation date. Conversely, an offer from a cash buyer is a commercial offer made on specific terms and is not automatically evidence of open-market value. If an executor is considering such an offer, it is sensible to compare its terms with the valuation assumptions, likely selling costs and the estate’s administration requirements.

Where the figure is to support an inheritance tax return or another formal estate purpose, the executor should ensure that the valuer understands the reporting requirement and retains the supporting evidence. Professional advice may be needed on tax treatment, disclosure obligations and whether a revised valuation is required if the property is later sold for a materially different amount. The valuer determines the property’s market value; the executor and their legal or tax advisers remain responsible for how that figure is used in administering the estate.