Valuing land for probate means establishing its open market value on the date the owner died, the price it might reasonably have fetched between a willing buyer and a willing seller, then reporting that figure to HMRC. For bare land, farmland and woodland, that usually means a RICS valuation rather than a free estate agent appraisal.
Bare land, farmland, paddocks and woodland rarely have close comparable sales, so an estate agent's appraisal often will not hold up. Where value turns on planning prospects or agricultural relief, a RICS valuation is usually the safer basis. Figures are current as at August 2026 and are subject to change.
What does valuing land for probate mean?
It means fixing the open market value of the land as at the date of death, the value HMRC uses to work out inheritance tax. This is a statutory basis: the price the land might reasonably fetch if sold on the open market at that moment (HMRC, IHTM09703, s160 IHTA 1984, as at August 2026). It is not the asking price, the insurance value, or what a beneficiary hopes to receive. The value must reflect the land's full potential, including any development or amenity value, and is reported on form IHT405 for land and buildings, then carried into form IHT400 (gov.uk, IHT405).
Can an estate agent value land, or do you need a RICS surveyor?
For a standard house with recent comparable sales nearby, estate agent appraisals are often accepted. For land, where comparables are scarce and value turns on planning and use, a RICS Red Book valuation is usually the safer route and the standard HMRC is most likely to accept without challenge.
| Feature | Estate agent appraisal | RICS Red Book valuation |
|---|---|---|
| Typical cost | Usually free | Often a few hundred pounds and up, by size and complexity |
| Basis | Marketing opinion, often an asking price | Open market value to RICS Valuation Global Standards |
| Best for | Standard houses with clear comparables | Bare land, farms, woodland, development plots, high-value or disputed estates |
| Weight with HMRC | Limited; may be queried | Recognised professional evidence, defensible if challenged |
General guidance; a single free appraisal rarely suits land. Near the inheritance tax threshold, many executors obtain a RICS valuation regardless.
How to value land for probate, step by step
The core task is to obtain a defensible open market value at the date of death, then keep the evidence that supports it. For most parcels in England and Wales that usually means confirming exactly what is owned, choosing between estate agent appraisals and a RICS valuer, valuing as at the date of death, capturing any hope or development value, and reporting the figure to HMRC. The steps below follow that order.
- Identify exactly what is owned. Check the title at HM Land Registry to confirm the boundaries, any rights of way or covenants, and whether it is held solely, jointly or in shares.
- Decide the valuation route. For a standard residential plot, several written estate agent appraisals may suffice. For bare land, farmland, woodland or anything with development potential, instruct a RICS registered valuer.
- Value as at the date of death. Every figure must reflect the market on that date, not today. Ask the valuer to state the date of death value explicitly and keep the comparable evidence.
- Capture hope and development value. If the land could attract a planning bid, its market value may exceed its current-use value. This must be included, and it is a common point HMRC checks.
- Report and keep the file. Enter the land value on form IHT405 and carry it into IHT400, then retain the valuation, comparables and correspondence in case HMRC queries the figure later.
How are farmland, woodland and development land valued?
These are valued at open market value like any land, but reliefs can reduce the taxable figure and the rules changed for deaths from 6 April 2026. A RICS valuer with rural experience is usually needed, because value depends on use, tenancies, access and planning prospects that generic appraisals miss.
Agricultural property relief (APR) and business property relief (BPR) can cut the inheritance tax on qualifying farmland and business assets. From 6 April 2026, 100% relief applies to the first £2,500,000 of qualifying agricultural and business property combined per person, with 50% relief above that, and the £2,500,000 allowance is transferable to £5,000,000 for a couple (gov.uk, announced 23 December 2025, as at August 2026, subject to change). This replaced the previous uncapped 100% relief, so an accurate valuation now matters more, because value above the allowance is only 50% relieved. Because the reliefs turn on how the land is used and structured, valuing it well is the first step in any inheritance tax planning for a rural estate.
How is a share of jointly owned land valued?
Where the deceased owned land with others as tenants in common, only their share forms part of the estate, and that share is usually valued at a discount because a part share is harder to sell than the whole. HMRC commonly accepts a reduction, often in the region of 10% to 15% for residential land, though the figure depends on the facts, and the valuer should set out the discount and the reason for it.
Where land was held as joint tenants rather than tenants in common, it passes automatically to the survivor and is valued differently, so the way the title is held matters. You can read more about how ownership shapes an estate in our guide to what probate involves.
What happens if HMRC thinks the land is undervalued?
HMRC can refer land valuations to the Valuation Office Agency and challenge a figure it considers too low. If more tax is due, executors may face interest and a penalty, up to 100% of the additional tax for a deliberate and concealed undervaluation (gov.uk, Schedule 24 FA 2007, as at August 2026, subject to change). Careless errors attract lower penalties, and a dated, well evidenced valuation is the best defence.
The rule can also work in your favour. If executors sell qualifying land within four years of death for less than the probate value, they may reclaim the overpaid inheritance tax on form IHT38, provided the loss is more than the lower of £1,000 or 5% of the reported value and the sale is at arm's length (gov.uk, IHT38, as at August 2026, subject to change). This is one reason to value carefully rather than guess low. Where land forms a large part of an estate, it is also worth reviewing the wider picture as part of your estate planning.
Frequently asked questions
Valuing land for probate raises the same questions for most executors: whether a RICS valuation is needed, what an estate agent can and cannot do, how farmland and jointly owned shares are treated, and what happens if HMRC challenges the figure. The short answers below reflect the law of England and Wales as at August 2026 and are general information, not advice.
Do you need a RICS valuation of land for probate?
Not always, but for land it is usually advisable. Bare land, farmland, woodland and development plots rarely have close comparable sales, so a RICS Red Book valuation gives HMRC recognised professional evidence of open market value at the date of death. For a standard house with clear comparables, several written estate agent appraisals may be accepted instead.
Can an estate agent value land for probate?
An estate agent can give a market appraisal, and for standard residential plots this may be enough. For land, an agent's figure is often an asking price rather than open market value and may be queried by HMRC. Where the estate is near the inheritance tax threshold, or the land is unusual, a RICS valuation is the safer choice.
How do you value agricultural land or woodland for probate?
Agricultural land and woodland are valued at open market value as at the date of death, usually by a RICS valuer with rural experience, because value depends on use, tenancies, access and planning prospects. Agricultural and business property reliefs may then reduce the taxable figure, with 100% relief capped at the first £2,500,000 per person for deaths from 6 April 2026.
What happens if you undervalue land for probate?
HMRC can refer the figure to the Valuation Office Agency and charge the extra inheritance tax, plus interest and a penalty of up to 100% of the additional tax for a deliberate and concealed undervaluation. Careless errors attract lower penalties. A dated, well evidenced valuation from a suitable professional is the best protection against a challenge.
Is land valued at market value or agricultural value for probate?
Land is valued at open market value, which includes any development or hope value, not just its current agricultural use. Agricultural property relief may then reduce the tax on the agricultural element, but the reported value itself must reflect what the land could fetch on the open market at the date of death.
How is a share of jointly owned land valued?
Where land is held as tenants in common, only the deceased's share is part of the estate, and it is usually discounted because a part share is harder to sell than the whole. Discounts are often around 10% to 15% for residential land, depending on the facts. Land held as joint tenants passes to the survivor and is treated differently.