Property Valuation for Probate: RICS Red Book, District Valuer, and Loss on Sale Relief
Property must be valued at open market value on the date of death for both probate and IHT. A RICS Red Book valuation is required — estate agent appraisals are not accepted by HMRC. The District Valuer may challenge the value. Loss on Sale relief (s191 IHTA 1984) reduces IHT if the property sells for less than probate value within 4 years.
Step-by-Step: Property Valuation for Probate and IHT
1. Appoint a RICS-qualified surveyor
Instruct a chartered surveyor who is a member of RICS (Royal Institution of Chartered Surveyors) to provide a Red Book valuation — a formal written opinion of the property's open market value on the date of death. The Red Book valuation must comply with RICS Valuation — Global Standards (formerly the Red Book). Estate agents can provide a market appraisal, but for probate and IHT purposes only a RICS-qualified surveyor's Red Book valuation is accepted by HMRC.
2. Obtain the written valuation report
The written report will state the estimated open market value of the property at the date of death, the methodology used (comparable sales analysis, income approach if relevant), and the surveyor's credentials. The report is submitted with the IHT400 (and schedule IHT405 for property). Keep the original signed report — HMRC may ask for it.
3. Submit IHT400 with IHT405
Schedule IHT405 ('Houses, land, buildings and interests in land') is the schedule for declaring property values on the IHT400 estate return. Enter the surveyor's figure. If there are multiple properties, use a separate IHT405 row for each. Joint property (held as joint tenants) is typically valued at 50% of the open market value with a discount for co-ownership (typically 10-15%) unless it is spouse/civil partner survivorship.
4. HMRC District Valuer (DV) may be instructed
HMRC's Valuation Office Agency (VOA) District Valuers are professional surveyors employed by HMRC. Where HMRC considers the declared property value may be understated, HMRC may instruct the DV to provide an independent opinion. If the DV's opinion is higher than the declared value, HMRC will open a negotiation with the estate. The DV does not have powers to compel access — they will typically ask for evidence of comparable sales to support the declared value.
5. Negotiate with the District Valuer if required
If the DV proposes a higher value, the executor (or their adviser) should: (1) review the DV's comparable sales evidence; (2) obtain further evidence of comparable sales supporting the declared value; (3) identify any factors reducing the property's value (condition, access, planning issues, restrictive covenants, tenancies). A negotiated settlement is usually reached. If agreement cannot be reached, the matter is referred to the Upper Tribunal (Lands Chamber), which has jurisdiction to determine property values for tax purposes.
6. Claim Loss on Sale relief if the property sells for less
Under s191 IHTA 1984, if the executor sells the property for less than the probate value within 4 years of death, the estate can claim Loss on Sale of Land relief. The IHT is recalculated using the actual sale price rather than the probate value, reducing the IHT liability. The relief must be claimed within 4 years of death. Only arm's-length sales to unconnected buyers qualify — sales to beneficiaries or family members at undervalue do not.
Frequently Asked Questions
Do you need a RICS surveyor to value a house for probate, or can an estate agent do it?
For probate and Inheritance Tax purposes, you need a formal RICS Red Book valuation from a chartered surveyor — not just an estate agent's market appraisal. An estate agent's appraisal or online valuation (Rightmove, Zoopla) is not accepted by HMRC as evidence of the property's value for IHT. Under s160 IHTA 1984, property must be valued at its open market value on the date of death. Only a RICS-qualified surveyor can provide a Red Book valuation that HMRC will accept for the IHT400 schedule IHT405. Some estate agents who have RICS-qualified valuers on staff can provide the formal valuation, but the report must comply with RICS Valuation — Global Standards and must be signed off by the qualified surveyor, not just dated as an 'estimate'.
What is a retrospective probate valuation and when is it needed?
A retrospective probate valuation is a RICS valuation commissioned after the date of death — sometimes months or years later — to establish the property's value at the date of death. Retrospective valuations are often needed when: (1) executors delayed in instructing a surveyor; (2) the estate is complex and taking time to administer; (3) HMRC has opened an enquiry into the declared value. A retrospective valuation must comply with the same Red Book standards as a contemporaneous valuation. The surveyor uses market data from the date of death period (comparable sale prices from that time, market conditions, any reports or correspondence relating to the property around the date of death). The further the valuation date is from the current date, the more difficult and expensive the retrospective exercise becomes — and the more scope HMRC has to challenge the evidence base.
How does HMRC's District Valuer challenge a property value for IHT?
HMRC's Valuation Office Agency (VOA) employs District Valuers (DVs) — professional chartered surveyors who assess property values for HMRC. Where HMRC considers an IHT property value may be understated, they refer the case to the DV. The DV will: (1) review the declared value and the surveyor's report; (2) check comparable sales data from the date of death; (3) form an independent opinion of value; (4) write to the estate's representative proposing a revised (usually higher) figure. The executor is not obliged to accept the DV's view — they can negotiate, provide additional evidence of comparable sales, or point to factors the DV may have overlooked (condition, access issues, covenants, local market conditions). If a settlement cannot be reached through negotiation, either party can apply to the Upper Tribunal (Lands Chamber) for a determination. In practice, most DV challenges are resolved by negotiation, with the final figure falling between the two positions.
What is Loss on Sale of Land relief for IHT?
Loss on Sale of Land relief (s191–198 IHTA 1984) allows executors to substitute the actual sale price for the probate value when calculating IHT, if the property is sold at arm's length within 4 years of death and the sale price is lower than the probate value. For example, if a house was valued at £450,000 at death but sold 18 months later for £400,000, the estate can claim a refund of the IHT overpaid on the £50,000 difference. The relief is claimed by filing a formal application with HMRC (using form IHT38). The claim must be made within 4 years of the date of death (not 4 years from the sale). Only genuine arm's-length open market sales qualify — sales to beneficiaries, connected persons, or at below market value do not qualify. The relief is particularly valuable in falling property markets where estate property takes a long time to sell.
How is a jointly owned property valued for IHT at probate?
A jointly owned property is valued at its open market value and then the deceased's share is calculated. For joint tenants (the most common form of joint ownership between spouses): the whole property is valued at open market value, then a 50% share is taken. A co-ownership discount is then applied — typically 10-15% — to reflect the fact that a purchaser of a 50% share would not pay a full half of the open market value (they cannot force a sale and would share occupation with a stranger). Between spouses and civil partners, IHT is typically irrelevant on the first death (spousal exemption) so the co-ownership discount calculation only matters on the second death, when the full property is in the surviving spouse's estate (and no co-ownership discount applies).
Does the property have to be professionally valued if it is clearly worth less than the nil-rate band?
Technically, if the entire estate is within the excepted estate threshold (broadly, estates where no IHT is due and certain other conditions are met), a full RICS Red Book valuation may not be legally required. However, HMRC may still open an enquiry if the value declared appears too low, and having a supporting professional valuation is the strongest defence. For estates above the nil-rate band threshold, a Red Book valuation is essential — the IHT400 requires the property to be supported by a valuation, and HMRC will challenge unreferenced figures. Given the cost of a RICS probate valuation (typically £300-£600 for a standard residential property), obtaining a formal valuation for any property-owning estate is almost always the right course, even for smaller estates.
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