Most probate valuations pass through HMRC without incident. Some don’t.
A Red Book report lands with the solicitor, goes into the IHT400, and that’s the end of it. But a proportion of estates, particularly those involving higher-value properties, tenanted interests, undivided shares, or figures that sit below what HMRC’s own data might suggest, get referred to the District Valuer for review. When that happens, the quality of the original valuation stops being academic.
This article is about what that process looks like, how a well-prepared valuation holds up under scrutiny, and what solicitors and accountants can do to make their clients’ positions as defensible as possible from the outset.
Who is the District Valuer?
The District Valuer is a chartered surveyor employed by the Valuation Office Agency, the same body responsible for rating assessments and council tax banding. For inheritance tax purposes, the VOA acts as HMRC’s expert on property values. When HMRC has reason to doubt a figure submitted with an IHT return, they can refer it to the District Valuer’s Service for an independent opinion.
It is worth being clear about what this is and isn’t. A DV referral is not a formal dispute or a legal challenge. It is, in the first instance, a professional exchange between valuers. The DV forms their own view of value and writes to the estate’s representatives with that view. If the figure differs from the one submitted, the parties are expected to engage, to exchange evidence, discuss methodology, and ideally reach an agreed figure. Most cases settle at this stage without ever reaching the Lands Tribunal.
That said, it would be wrong to treat a DV referral as a formality. A District Valuer who has formed the view that a property was undervalued by £100,000 will not be easily moved by a letter that says “we disagree.” What moves them is evidence.
— A note on tone A DV referral is not a dispute to be won. It is a professional discussion to be had.
What tends to trigger a referral?
HMRC does not publish a definitive list of referral triggers, but experience points to a few consistent patterns.
Properties valued significantly below what HMRC’s own transaction data suggests for the area are an obvious starting point. The VOA has access to Land Registry data and its own market intelligence, and a figure that sits well outside the expected range will attract attention.
Discounted valuations are another common trigger. Tenanted properties, particularly those let on Rent Act tenancies or at below-market rents, attract discounts that can substantially reduce the figure reported for IHT. Undivided share discounts, where a property is owned jointly and each share is valued at less than a straight pro-rata of the whole, are also scrutinised carefully. Section 161 of the Inheritance Tax Act 1984 requires related property to be valued together in certain circumstances, and HMRC is alert to structures that might artificially depress the taxable estate.
Unusual assets, properties with planning potential, development land, agricultural buildings with conversion prospects, also attract scrutiny, as do properties where the condition has been heavily discounted without strong supporting evidence.
Not all probate valuations are the same.
The straightforward case, a freehold house in sole ownership, sold with vacant possession, is the easy one. The DV looks at it, checks the comparables, and usually moves on. The instructions that generate the most scrutiny, and where the choice of valuer matters most, are the ones with complexity built into them.
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01
Tenanted properties.
A property let on an AST at below-market rent is worth less than one with vacant possession, but by how much depends on the nature of the tenancy, the passing rent relative to market levels, the unexpired term, and the likely behaviour of a purchaser in the open market. Apply too generous a discount and HMRC pushes back; apply too thin a discount and the estate pays more tax than it should. This requires market knowledge and a defensible methodology, not a rule of thumb.
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Rent Act tenancies.
A property let on a protected tenancy, tenant security plus a regulated rent, can attract a substantial discount to vacant possession value, sometimes in excess of 40%. These figures are scrutinised carefully because the evidence base for Rent Act discounts is thinner and harder to verify than for straightforward vacant possession sales.
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Undivided shares.
A 50% undivided share in a property worth £1m is not automatically worth £500,000. In the open market, a share where the other owner is an unrelated third party is difficult to sell and difficult to finance, and a discount reflecting that illiquidity is appropriate. Section 161 IHTA 1984 requires careful consideration here; misapplying the related-property framework is an easy way to produce a figure that doesn’t survive scrutiny.
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04
Development potential and hope value.
A property with planning permission, or in a location where consent is reasonably foreseeable, is worth more than the same property without it. Ignoring hope value entirely is not a defensible position; overstating it is equally problematic. The valuer’s job is to assess what a willing buyer would pay in the open market for the prospect of development, and set out that reasoning clearly.
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Properties requiring works.
The cost of works is not the same as the diminution in value. A purchaser buying a property needing £100,000 of work does not simply deduct £100,000, they factor in time, risk, and the fact they’re taking on a project. The right approach is to assess what the property would actually achieve in its condition at the valuation date, supported by comparable evidence of properties in similar states of repair.
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Leasehold interests.
As a Lease falls below 80 years, the cost of extension increases and marketability reduces. Below 60 years, some mortgage lenders will not lend at all. A valuation that does not address the unexpired term and its impact, including the potential cost of a Lease extension under the 1993 Act, is an incomplete valuation.
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Multiple properties in one estate.
Where an estate includes more than one property, there can be arguments about whether the assets should be valued individually or as a portfolio. In most cases the answer is individually, but where properties are genuinely interdependent, or where a single purchaser would pay a different price than the sum of the parts, the question is worth addressing explicitly.
What happens when the DV forms a higher view?
If the District Valuer reaches a figure higher than the one submitted, they will write to the solicitor handling the estate, sometimes directly, sometimes via HMRC, setting out their view and inviting a response. This letter is not a final determination. It is the opening of a negotiation.
The DV’s figure is based on their own analysis of comparable evidence and their judgment of the property’s characteristics. It may or may not be accompanied by details of the comparables they have relied upon. In practice, it is worth asking for those details early: understanding the DV’s evidential basis is essential to forming a response.
From this point, the process is essentially a professional dialogue. The estate’s valuer will set out the reasoning behind the original figure, identify the comparables and adjustments that support it, and engage with whatever the DV has put forward. This may take several rounds of correspondence. In the majority of cases, the parties reach a point of agreement, sometimes at the original figure, sometimes at an agreed uplift, sometimes somewhere in between.
If agreement cannot be reached, the dispute can ultimately be referred to the First-tier Tribunal (Property Chamber), formerly the Lands Tribunal. This is relatively rare and generally a last resort, but it remains an option where the sums involved justify it.
— The standard, in one line A defensible valuation is not fundamentally different from one that isn’t. The difference lies in the quality of the work, and the quality of the records behind it.
What makes a valuation defensible?
A valuation that can be defended before a District Valuer is not fundamentally different from one that cannot be. The difference lies in the quality of the work and the quality of the records behind it.
Comparable evidence.
The strongest defence of any valuation figure is a set of genuinely comparable transactions, properties of similar type, condition, size and location that sold at prices consistent with the figure reported. The comparables need to be properly analysed: adjusted for differences in timing, condition, and specification, not simply cited as authority. A District Valuer who can show their comparables are closer in nature to the subject property than yours will carry the argument.
Methodology.
For straightforward residential properties, the comparable method is standard. For tenanted properties, investment properties, or anything with a non-standard income profile, the methodology becomes more important, and more scrutinised. Yields, capitalisation rates, and vacant possession discounts all need to be reasoned and defensible, not simply assumed. If a tenanted discount has been applied, the basis for that discount, market evidence, comparable transactions, the nature of the tenancy, needs to be set out clearly.
Inspection notes and records.
A valuation report produced without an inspection, or based on limited information, is harder to defend than one supported by contemporaneous inspection records, photographs, and notes. The ability to say “I inspected the property on this date, and these are the specific factors I observed that affected my opinion of value” is meaningfully more powerful than a report that relies entirely on desktop analysis.
Red Book compliance.
A report prepared in accordance with RICS Valuation, Global Standards (the Red Book) carries professional authority that a non-compliant opinion does not. It signals that the valuer has followed a recognised professional standard, has appropriate expertise and independence, and has produced a report that is intended to be relied upon. HMRC and the VOA both understand what a Red Book valuation is, and what it represents.
The valuer’s role in the process.
Once a DV referral is underway, the valuer who produced the original report becomes central to the estate’s position. Their job is not simply to stand by the figure, it is to engage constructively, provide the evidence that supports it, and respond substantively to whatever the DV has put forward.
This is where the choice of valuer matters. A surveyor who has produced a large volume of probate valuations, who has dealt with DV referrals before, and who understands the process is better placed to navigate it than one for whom it is unfamiliar territory. The willingness to engage directly with the DV, to have a conversation, exchange schedules of comparables, and work towards a resolution, is as important as the technical quality of the original report.
It is also worth noting that the DV process is not adversarial in the way litigation is. District Valuers are professionals doing a job. They respond to evidence, reason, and professional courtesy. An approach that treats the referral as a dispute to be won rather than a professional discussion to be had is unlikely to be the most productive one.
A note for solicitors and accountants.
If you instruct a valuer for a probate matter, the most useful thing you can do is instruct them early and give them complete information. A valuation produced under time pressure, without sight of the title register, tenancy documents, or any known defects, is a valuation that will be harder to defend.
Ask your valuer whether they have handled DV referrals before. Ask them how they approach it. A valuer who can give you a clear account of the process and their experience of it is one who has been through it.
And if a DV referral does arrive, don’t treat it as bad news. In our experience, the majority of well-evidenced valuations either hold at the original figure or result in a relatively modest agreed adjustment. The process is navigable, and the right preparation makes it significantly more so.
Elliot
Taylor.
AssocRICS · Registered Valuer · Director
Elliot is a RICS Registered Valuer and a director of Taylor Berlin. The practice advises solicitors, accountants and private clients on the full range of Red Book valuation instructions, including probate, IHT and CGT, with DV negotiation handled in-house where required.