SDLT and Uninhabitable Property: Cracks, Damp and Failed Electrics
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Can you claim SDLT back if a property had damp, cracks, a failed electrical test and a broken boiler?
Introduction
Many buyers ask whether they can reclaim Stamp Duty Land Tax (SDLT) because the property they bought needed work. A common question is whether defects such as damp, hairline cracking, an outdated bathroom, failed electrics or a broken boiler mean the dwelling was not suitable for use as a residence at the effective date of purchase.
This matters because, if a building was genuinely not suitable for use as a dwelling at completion, the transaction may fall outside the residential SDLT rules. But the legal test is strict. Ordinary disrepair, deferred maintenance and the need for renovation will usually not be enough.
In particular, the threshold for an “uninhabitable” or “not suitable for use” argument is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.
The Question
A buyer completed a condition questionnaire after purchasing a dwelling. The issues identified included hairline cracks, some damp, a failed electrical safety test, a bathroom needing updating and a boiler that was not working. The buyer wanted to know whether those problems could support an SDLT reclaim on the basis that the property was not suitable for use as a dwelling when bought.
Nick’s Explanation
Nick’s view, put into general terms, was that these facts do not usually point to a valid “not suitable for use” SDLT claim.
The key reasoning can be summarised like this:
- Hairline cracks and some damp usually indicate defects or repair needs, not a building that has ceased to be a dwelling.
- A failed electrical test may show that remedial work is needed, but it does not automatically mean the property was unsuitable for residential use at the purchase date.
- A bathroom that needs updating is a condition issue, not evidence of uninhabitability.
- A broken boiler can be relevant, especially in colder conditions, but on its own it will rarely be enough unless the overall state of the property shows that it could not reasonably be used as a home.
In short, the presence of repair items and outdated features does not normally take a property outside the residential SDLT regime. The legal question is not whether the property was in poor condition, but whether it was objectively suitable for use as a dwelling at the effective date of the transaction.
The Law
SDLT is charged under the Finance Act 2003. Whether a property is taxed as residential depends on the statutory definition of “residential property”. The key provision is section 116 Finance Act 2003.
Broadly, residential property includes a building that is used or suitable for use as a dwelling, or is in the process of being constructed or adapted for such use.
The phrase “suitable for use as a dwelling” has been considered in a series of cases. The courts and tribunals have made clear that:
- the test is applied at the effective date of the transaction, usually completion;
- the test is objective;
- the question is the physical state of the property, not the buyer’s plans for renovation;
- serious disrepair does not necessarily stop a building being residential property;
- the threshold is high before a dwelling is treated as unsuitable for use.
The more recent appellate guidance reinforces that a property can still be “suitable for use as a dwelling” even where it needs substantial works. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the condition threshold for arguing that a property was uninhabitable or not suitable for use is now relatively high.
Analysis
The correct approach is to look at the defects individually and then stand back and assess the property as a whole.
Hairline cracks
Hairline cracking is commonly associated with cosmetic movement, shrinkage or minor structural concern. Without evidence of major structural instability, it will not usually show that the building could not be lived in.
Some damp
Damp is common in older housing stock. Unless it is severe enough to make occupation unrealistic or unsafe, it usually points to repair and maintenance rather than loss of dwelling status.
Failed electrical safety test
A failed electrical inspection can be important evidence, but the legal significance depends on the extent of the defect. Many properties require rewiring or electrical upgrading while still remaining capable of residential use. A failed report does not by itself answer the SDLT question.
Bathroom needs updating
An outdated bathroom is not the same as the absence of basic facilities. If washing and sanitation facilities existed, even in poor or old condition, this will normally support a finding that the property was still suitable for use as a dwelling.
Boiler not working
A non-functioning boiler is more serious than cosmetic disrepair, but it is still not automatically decisive. The wider context matters: whether there was any hot water, whether there was alternative heating, the season, the extent of other defects, and whether occupation was realistically possible at completion.
Overall assessment
When these points are taken together, they usually describe a property in poor or dated condition that needs works, not a property that has stopped being a dwelling for SDLT purposes. The courts have repeatedly distinguished between a property that is unattractive or inconvenient to occupy and one that is objectively unsuitable for use as a dwelling.
That distinction is crucial. SDLT does not turn on whether a prudent buyer would choose to move in immediately. It turns on whether the property was, in substance, still capable of functioning as a dwelling at the relevant date.
Outcome
On these facts alone, a successful SDLT reclaim is unlikely. Hairline cracks, some damp, a failed electrical test, an outdated bathroom and a broken boiler would usually be treated as evidence of disrepair and the need for renovation, rather than proof that the property was not suitable for use as a dwelling.
A stronger claim would normally require much more serious evidence, such as the absence of essential living facilities, major structural failure, conditions making occupation genuinely unsafe, or a state of disrepair so severe that the building could not reasonably be used as a home at completion. After Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the hurdle is high.
Practical Steps
If you are assessing whether a property might have fallen outside the residential SDLT rules, focus on evidence from the completion date:
- obtain the survey, valuation and any electrical, gas or structural reports that existed at the time;
- check whether the property had functioning kitchen, bathroom, water, drainage, electricity and safe access;
- gather dated photographs showing the actual condition at completion;
- identify whether any defect was merely inconvenient or whether it made occupation objectively unrealistic or unsafe;
- separate renovation plans from the legal test, because intended works do not determine suitability;
- compare the facts against the current case law, especially the stricter approach confirmed in Mudan.
In practice, the best starting point is a careful review of the contemporaneous evidence rather than a retrospective description of the property as “uninhabitable”.
Conclusion
A property does not become non-residential for SDLT purposes just because it has defects or needs substantial updating. On the facts described here, the better view is that the dwelling remained residential property at completion. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, only fairly extreme condition cases are likely to succeed on a “not suitable for use as a dwelling” argument.
Legal References Used
- Finance Act 2003, section 116
- Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799
This page was last updated on 22 March 2026.
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