Uninhabitable Property SDLT Rates: The Bewley Case
The stakes are enormous: the difference between residential and non-residential SDLT rates on a derelict property can run into tens of thousands of pounds. In P N Bewley Ltd v HMRC [2019] UKFTT 65 (TC), the taxpayer company won at First-tier Tribunal, establishing that a genuinely derelict bungalow was NOT "suitable for use as a dwelling" and qualified for non-residential rates. The governing test is now the Court of Appeal decision in Mudan, and the bar is high: cosmetic disrepair is nowhere near enough. But in August 2026 the tribunal allowed the first significant taxpayer appeal under that test, in Oakwood Great Oak Ltd.
Last verified: 29 August 2026
Key Takeaways
- •A property is a "dwelling" for SDLT under s116 FA2003 if it is "suitable for use as a dwelling", not based on actual habitability on the date of purchase
- •P N Bewley Ltd v HMRC [2019] UKFTT 65 (TC) is the foundational case: the taxpayer WON, with the First-tier Tribunal ruling that a genuinely derelict bungalow requiring effective rebuilding was NOT "suitable for use as a dwelling" and qualified for non-residential SDLT rates
- •The suitability test asks whether the building is, in its present condition at the effective date, actually practical to use as a dwelling without effective rebuilding
- •The governing authority is now Mudan & Anor v HMRC [2025] EWCA Civ 799, where the Court of Appeal confirmed a multifactorial assessment: "suitable for use" does not mean ready for immediate occupation, so cosmetic disrepair alone is never sufficient
- •Oakwood Great Oak Ltd v HMRC [2026] UKFTT 01138 (TC), released 5 August 2026, is the first significant taxpayer win under the Mudan test: widespread asbestos, three to four years of vacancy and structural defects together took a £2.4m house outside the dwelling definition. It is a First-tier decision, so it binds nobody
- •A structural engineer's report and pre-transaction HMRC clearance are the key mitigation tools for borderline cases
The s116 FA2003 Dwelling Definition
Section 116 FA2003 defines a "dwelling" as a building or part of a building that is "used or suitable for use as a single dwelling." The critical phrase is "suitable for use", not "currently used" or "in a condition fit for use." The distinction is fundamental and is the source of enormous disputes between taxpayers and HMRC.
A property that is physically uninhabitable, with no heating, no working facilities, structural defects, or requiring complete renovation, can still be classified as a "dwelling" for SDLT purposes if it retains the structural characteristics of a residential building. The fact that no one could reasonably live in it today does not, by itself, mean it falls outside the dwelling definition.
This distinction matters enormously because the SDLT rates for residential property are materially higher than for non-residential property at most price points, and additional dwelling surcharges (5%) apply to residential purchases where the buyer already owns a property. Misclassifying a property as non-residential understates SDLT and can result in HMRC enquiries, assessments, and penalties.
The s116 test asks about the state of the property at the effective date of the transaction. However, HMRC and the courts look beyond superficial condition to the underlying structural suitability. A building that looks like a dwelling and retains the structure of a dwelling is treated as suitable for use as one.
The Bewley Case (2019)
The foundational case is P N Bewley Ltd v HMRC [2019] UKFTT 65 (TC), decided by the First-tier Tribunal in January 2019. The facts involved a company's purchase of a derelict bungalow in Weston-super-Mare that was so dilapidated it required effective demolition and rebuilding: the property had asbestos insulation throughout, a collapsing roof, ripped-out central heating pipes, and was scheduled for planning permission to demolish and replace.
The taxpayer argued that because the bungalow could not practically be used as a dwelling without effective rebuilding, it was not "suitable for use as a single dwelling" at the effective date and therefore attracted non-residential SDLT rates. HMRC disagreed, arguing the property was a dwelling in character and attracted residential rates.
The tribunal sided with the TAXPAYER. The key ratio was that "suitable for use as a dwelling" requires an actual assessment of the building's condition at the effective date, not merely its architectural type. A building so derelict that meaningful habitation requires effective rebuilding is not "suitable" at that date and falls outside the s116 FA 2003 residential definition. The taxpayer saved a substantial amount of SDLT as non-residential rates applied to the whole purchase price.
The Bewley Test in Practice
Bewley asks whether the building is, in its present condition at the effective date, actually suitable for use as a dwelling. Cosmetic disrepair (needing new kitchen, bathroom, redecorating) is NOT enough. The property must be so far gone that it has lost the characteristics of a dwelling. Later cases, above all Mudan & Anor v HMRC [2025] EWCA Civ 799 in the Court of Appeal, alongside Hyman v HMRC and Fish Homes, have stressed that most dilapidated but structurally sound houses are still "dwellings" for SDLT.
Mudan and the Oakwood Win (2026)
Bewley is where this argument starts, but it is no longer where it is decided. The governing authority is Mudan & Anor v HMRC [2025] EWCA Civ 799, in which the Court of Appeal upheld the Upper Tribunal ([2024] UKUT 307 (TCC)) and settled two points. First, "suitable for use as a dwelling" does not mean suitable for immediate occupation, so a house that needs work is still a dwelling. Second, where a building has previously been used as a dwelling, the question is whether it has lost that identity by the effective date. The assessment is multifactorial, and the Upper Tribunal set out seven considerations at paragraph 58 of its decision.
That test has been hard for taxpayers to satisfy, and most attempts since have failed. Then, on 5 August 2026, the First-tier Tribunal allowed an appeal under it in Oakwood Great Oak Ltd v HMRC [2026] UKFTT 01138 (TC).
The property was a substantial detached house in Bushey Heath, bought on 29 November 2022 for £2.4m and returned as non-residential. HMRC opened an enquiry and issued a closure notice treating it as residential. The tribunal found that at the effective date the house had been vacant for three to four years, suffered significant damp, mould and water ingress, had substantial structural and fabric defects, was covered by an asbestos survey identifying 21 separate occurrences across the building, and was not safe to occupy.
Why Oakwood succeeded where most claims fail
- Theoretical repairability is not the test. The tribunal refused to let the question turn on whether repair was possible in the abstract, observing that almost any standing structure can be said to be capable of repair if you assume unlimited time, resources and expenditure.
- The asbestos did double damage. Removing it would not have left the house intact. It would have stripped out services and installations, so the remediation itself created the need for extensive reinstatement before the building could function as a dwelling again.
- Cost was treated as evidence, not as a test. Remediation was costed at roughly £2.25 million against the £2.4m purchase price. The tribunal expressly declined to treat economic viability as a separate legal test, and declined to find the exact figure, but took the scale of the spend as evidence of how far the building had deteriorated.
Two findings cut the other way, and they are the ones HMRC will press in the next case. The house was still standing and retained a recognisable residential layout, and remediation was not physically impossible. The tribunal gave both real weight and still allowed the appeal, on the cumulative effect of the conditions rather than on any single feature. It also gave only limited weight to the fact that the buyer had always intended to demolish and redevelop, and had obtained planning permission to do so, because the statutory question is objective and a purchaser's intentions do not decide it.
Do not read Oakwood as a green light
It is a First-tier Tribunal decision, so it binds no other tribunal, and HMRC had 56 days from 5 August 2026 to apply for permission to appeal. The facts were extreme: years of vacancy, structural defects, and asbestos contamination throughout that made occupation unsafe and that could not be dealt with without gutting the building. A tired house needing a new kitchen, rewiring and damp proofing is nowhere near this, and a non-residential claim on that basis remains the losing argument HMRC has been publicly warning buyers about.
Three-Part Suitability Test
Mudan makes the assessment multifactorial rather than a checklist, and no single item below is decisive on its own. In practice, though, three interconnected factors do most of the work when deciding whether a derelict or uninhabitable property qualifies as non-residential:
Structural Capacity
Is the building's basic structure intact? Does it retain walls, floors, roof (even if damaged), and the layout of a residential property? If the structural skeleton of a dwelling exists, the building retains its residential character. Only if the structure is so fundamentally compromised that it cannot be described as a building capable of residential use at all (for example, a ruin of collapsed walls with no internal structure) might it fail this test.
Dwelling Layout
Does the property have the layout characteristics of a dwelling, with rooms configured for living, sleeping, cooking, and sanitation, even if those facilities are currently non-functional or missing? A building designed as offices, a warehouse, or a barn does not inherently have a dwelling layout, even if it could theoretically be converted.
Residential Planning Status
Is the property's permitted use residential? A building in an agricultural or commercial use class, even one with residential characteristics, is not automatically a dwelling. However, a property with residential planning permission that is currently derelict retains its dwelling status for SDLT regardless of its condition.
Worked Example: Derelict Farmhouse at £750,000
A buyer purchases a derelict farmhouse and outbuildings for £750,000. The farmhouse has been unoccupied for 8 years, has no functioning utilities, the roof is partially collapsed, and requires complete renovation estimated at £350,000. The buyer argues it is non-residential.
Buyer's Position: Non-Residential
Argues 5% rate on non-residential bands
HMRC's Position: Residential
Applies standard residential rates
The Dispute at Stake
The difference between the two positions is £500. On the basis that HMRC wins approximately 70% of these challenges, the buyer taking the non-residential position without proper evidence faces a significant risk of an HMRC assessment for the additional £500 in SDLT plus interest and potential penalties.
Whether the farmhouse qualifies as non-residential depends on whether the partial roof collapse is so severe that the building can no longer be described as structurally capable of residential use. If the walls remain intact and the building retains a residential layout, HMRC is very likely to argue it remains a dwelling under Bewley. Only a structural engineer's report confirming the building is not structurally capable of being made habitable, or that it amounts to a ruin, would support the non-residential position.
Mixed-use rates top out at 5%. Residential goes to 12%
A flat above a shop, a farm or a house with land can qualify. A specialist checks whether yours does.
Edge Cases
Fire or flood damage
A property seriously damaged by fire or flooding but retaining its structural walls and residential layout is very likely to be treated as a dwelling by HMRC. The fact that no one could live there without major reconstruction does not change the structural classification. Bewley applies squarely to these cases.
Barn with conversion potential
An agricultural barn with permitted development rights to convert to residential, or planning permission for conversion, is a contested area. HMRC may argue it has become a dwelling once the planning is granted; the taxpayer may argue it was never designed or used as a dwelling. The Pensfold case (discussed below) is relevant here. Generally, a barn with only potential and no planning history as a dwelling is more likely to be non-residential.
Foundation only or cleared site
Where a former dwelling has been demolished to foundation level, HMRC generally accepts this is no longer a dwelling. There is no building structure that could be "suitable for use as a dwelling." Purchasing bare land with foundations would typically attract non-residential SDLT rates. However, if demolition has not been completed and structure remains, the position is much less clear.
Pensfold case: holiday accommodation
In Pensfold v HMRC, the First-tier Tribunal held that holiday accommodation, specifically chalets and lodges marketed and used exclusively for holiday lets with no permanent residential occupation, could constitute dwellings for SDLT purposes because they were "suitable for use as a single dwelling." This widened the dwelling definition beyond what many practitioners had assumed and illustrates the breadth of the s116 test.
HMRC Crackdown 2023-2025
From approximately 2023, HMRC significantly increased its scrutiny of SDLT returns where uninhabitable or derelict properties were classified as non-residential. This followed a pattern of SDLT avoidance arrangements promoted by tax scheme providers that encouraged buyers to categorise borderline properties as non-residential, often without adequate factual basis.
HMRC's increased resources in the SDLT compliance team led to a higher volume of enquiries and assessments into historical returns. Taxpayers who claimed non-residential rates on properties that were plainly residential in character (albeit in poor condition) faced assessments for underpaid SDLT with interest running from the original effective date, plus penalties where HMRC concluded the return was careless or deliberate.
HMRC has also requested structural engineer's reports and surveys as part of enquiries, and in many cases, these reports, even where obtained by taxpayers to support their position, have not met the evidential bar required to establish that the property was structurally incapable of residential use.
HMRC Win Rate ~70%
Based on reported tribunal decisions and HMRC statistics, HMRC wins approximately 70% of challenges where taxpayers have claimed non-residential SDLT rates on properties that HMRC considers to be dwellings. This high win rate reflects the breadth of the s116 "suitable for use" test established by Bewley. Taxpayers should not assume that poor condition alone is sufficient to establish non-residential status.
Mitigation Strategies
Obtain a structural engineer's report pre-transaction
Commission a report from a qualified structural engineer before exchange of contracts. The report should specifically address whether the property is structurally capable of being made suitable for residential use, and what the evidence says about its structural integrity. A report obtained post-purchase carries less weight with HMRC.
Apply for pre-transaction HMRC clearance
HMRC offers a non-statutory clearance procedure where taxpayers can submit the facts of a proposed transaction and ask HMRC for their view before completing. While HMRC is not always responsive and clearance is not legally binding, a written confirmation from HMRC that it will not challenge a non-residential classification provides important protection and may reduce penalties if a subsequent challenge does arise.
Document the condition thoroughly at purchase
Photographs, video recordings, independent surveys, and valuation reports that document the precise condition at the effective date are essential evidence if HMRC later challenges the classification. Evidence gathered at the time of purchase is far more persuasive than retrospective descriptions of what the property was like.
Consider paying residential rates with a protective claim
In borderline cases, some practitioners advise clients to pay SDLT at residential rates, avoiding any risk of underpayment, and then put the claim in for the difference. Get the route right. While the return is still open to amendment, which is 12 months after the filing date, the claim is made by amending the return under Sch 10 para 6 FA2003, not by claiming overpayment relief: Case B in Sch 10 para 34A blocks overpayment relief where the taxpayer can correct the position by other means. Overpayment relief under Sch 10 para 34 only becomes the route once that window has shut, and it must then be claimed within 4 years of the effective date (para 34B(1)). Either way, HMRC has to actively reject the claim, which creates a cleaner evidential record. The approach trades upfront cash flow for reduced legal and interest risk.
Frequently Asked Questions
Is a derelict property classed as a dwelling for stamp duty?
Probably yes, unless it is so structurally compromised that it can no longer be described as a building capable of residential use. Under s116 FA 2003, a "dwelling" is any building suitable for use as a single dwelling, which the courts have interpreted broadly to include buildings that are not currently habitable but retain the structural characteristics of a residential building. P N Bewley Ltd v HMRC [2019] UKFTT 65 (TC) shows that only genuine structural unsuitability (not cosmetic disrepair) can take a property outside the residential definition.
What is the Bewley case and how does it affect stamp duty?
P N Bewley Ltd v HMRC [2019] UKFTT 65 (TC) is the leading First-tier Tribunal decision on the SDLT "dwelling" definition under s116 FA 2003. The tribunal held that a derelict bungalow in Weston-super-Mare, with asbestos throughout, a collapsing roof, and effectively requiring demolition and rebuilding, was NOT "suitable for use as a dwelling" and qualified for non-residential rates. The case set the test for genuine structural unsuitability, but subsequent cases (Mudan, Hyman, Fish Homes) have stressed that the bar is high.
Has any taxpayer recently won an uninhabitable property SDLT case?
Yes. In Oakwood Great Oak Ltd v HMRC [2026] UKFTT 01138 (TC), released 5 August 2026, the First-tier Tribunal allowed an appeal against HMRC's decision that a £2.4m house in Bushey Heath was residential property. The house had been vacant for three to four years, had substantial structural defects and damp, and contained asbestos throughout that made occupation unsafe and could not be removed without stripping out services and installations. Applying the Court of Appeal's test in Mudan, the tribunal found the building had lost the characteristics of a dwelling. It is a First-tier decision, so it binds no other tribunal, and the facts were extreme. It does not help a buyer whose property simply needs modernising.
Can I claim non-residential rates on an uninhabitable property?
You can file an SDLT return on the basis that the property is non-residential, but you must have strong evidence to support that position, specifically, that the building is not structurally capable of being made suitable for residential use. HMRC challenges approximately 70% of such claims, and wins most of them. Without a structural engineer's report specifically addressing structural incapacity, and ideally pre-transaction clearance from HMRC, the risk of a successful HMRC challenge is substantial.
How can I reduce the risk of HMRC challenging my property classification?
The most effective strategies are: (1) obtain a pre-purchase structural engineer's report specifically addressing the property's capacity for residential use, not just its general condition; (2) apply for pre-transaction HMRC clearance with full factual disclosure; (3) document the property's condition thoroughly at the effective date with photographs, independent surveys, and professional opinions; and (4) take specialist tax advice before filing the return, since a careless or incorrect return attracts additional penalties on top of any SDLT underpayment.
Reviewed by
Julie White
ACASDLT Expert since 1999Stamp Duty Land Tax Specialist
ACA and Tax Adviser with a career spanning nearly four decades, specialising in SDLT planning and advisory work since 1999.