Dealing with probate is tough enough without worrying about getting valuations wrong. But getting your estate valuation for probate right really does matter – not just for keeping HMRC happy, but for protecting yourself and making sure everything’s fair for the people inheriting.
Here are the most common valuation mistakes executors make, and more importantly, how you can avoid them.
Related: Receiving shared inheritance on a property: all you need to know
Why accuracy matters in probate valuation
Property usually makes up the biggest chunk of someone’s estate. Get the probate valuation wrong and you’re looking at HMRC investigations, delays with the grant of probate, and potential legal headaches.
Here’s the thing about valuations: they determine how much inheritance tax is due. Value the property too low and HMRC might challenge you. Value it too high and the beneficiaries could end up paying more tax than they need to. As the executor, you’re the one responsible for getting these figures right.
Related: Probate valuation: A guide for executors and beneficiaries
Using market estimates instead of formal valuation
Many executors assume an estate agent valuation will be sufficient. For straightforward estates below the inheritance tax threshold, HMRC may accept this. However, understanding when formal valuations are needed protects you.
Estate agent valuations provide market appraisals but differ from formal probate valuations. They give you a sense of market value but aren’t designed to meet HMRC’s probate requirements. Figures can vary between agents.
A RICS probate valuation costs more upfront but provides proper documentation specifically prepared for probate. These are far less likely to be challenged by HMRC. When estates approach the inheritance tax threshold, this documentation becomes essential.
Delaying the valuation and missing deadlines
We completely understand that dealing with grief and funeral arrangements comes first. But putting off the probate valuation can cause issues down the line. The valuation date that matters is when the person died, not when you finally get around to instructing a surveyor.
Property prices don’t stand still. If you wait six months and the market’s moved, the surveyor still has to value the property as it was on the date of death. That means doing a retrospective valuation, which takes more work and can be harder to justify if questioned.
HMRC expects you to move at a reasonable pace. Long delays tend to raise red flags.
Related: How long does a house survey take?
Incorrectly valuing unique or high-value assets
Standard properties are straightforward to value. Unusual ones need specialist assessment.
Period properties, listed buildings, homes with development potential, or unusual features require expert valuation. For probate, these benefit from RICS-qualified surveyors who specialise in complex properties.
Properties in poor condition need valuing as they are – not what they could be worth after renovation.
High-value estates get extra HMRC attention. When values exceed local averages, having a qualified RICS probate valuation becomes essential.
Not keeping proper documentation for HMRC
Here’s something that catches people out: HMRC can question your valuations years after you’ve submitted everything. If you haven’t kept proper records, you’ll find it difficult to back up your figures.
Save everything. If you’re using estate agent valuations, get written confirmation from at least three different agents, then average their figures. Make a note of when each valuation was done and who did it.
With RICS valuations, the formal report is your documentation. Just make sure it clearly says it’s for probate purposes and values the property at the date of death.
Take photos of the property’s condition too. If HMRC comes back with questions later, those images will show exactly what state things were in.
Related: Property selling fees explained: what homeowners should know before selling
Not getting a RICS-qualified valuer
Not every surveyor can handle probate valuations. You need someone who’s a RICS Registered Valuer which means they’re qualified to produce valuations that meet RICS Red Book standards.
RICS stands for the Royal Institution of Chartered Surveyors. Look for people with MRICS or FRICS after their name. These are the professionals who can provide the formal valuations that HMRC expects when you’re dealing with complex or high-value estates.
The RICS Red Book sets out the professional standards. When a valuation meets these standards, HMRC takes it seriously. Plus, you get professional indemnity protection as an added layer of security.
How these mistakes affect inheritance tax and probate approval
Getting the valuation wrong has real knock-on effects. If you undervalue a property, even by a modest amount, you could face inheritance tax penalties and interest charges once HMRC spots the error.
HMRC’s District Valuer Service checks probate valuations. They compare what you’ve submitted against local market data. When something doesn’t add up, they’ll start asking questions.
Those investigations hold everything up. You can’t distribute the estate or sell the property. Beneficiaries are left waiting. Legal costs start piling up.
Overvaluing causes a different challenge – beneficiaries end up paying more inheritance tax than they owe.
Related: What is Capital Gains Tax, and when do you pay it?
How executors can ensure smooth, compliant probate valuation
Start the valuation process quickly. Contact an RICS Registered Valuer within weeks of the death. Even if you’re not ready for full probate applications, getting the valuation sorted removes one major task.
For estates approaching or exceeding the inheritance tax threshold, always use a RICS-qualified surveyor.
For straightforward, low-value estates well below the threshold, estate agent valuations may work. Obtain at least three, keep written records, and average the figures.
Document everything thoroughly. Create a file containing all valuation correspondence and supporting evidence.
Consider the property type. Unique features, listed status, or development potential all justify professional RICS valuation regardless of estate value.
Dealing with probate? Our experienced team understands the challenges executors face. Contact your local Martin & Co branch for expert guidance today.
