Property Condition, Uninhabitability and UK SDLT Claims

NO VAT
How Do You Register a Stamp Duty Claim After Completing a Property Condition Questionnaire?
Introduction
People often search this question after filling in an online property condition form and then being unsure what happens next. In many cases, the issue is not about the legal merits of the claim itself, but simply how to complete the registration process so the adviser can review whether there may be a Stamp Duty Land Tax (SDLT) refund argument.
This article explains, in general terms, what happened in this type of situation, what Nick said in response, and how this fits into the wider SDLT question that usually sits behind these enquiries: whether the condition of a dwelling at the time of purchase was serious enough to affect SDLT treatment.
The Question
A buyer completed an online questionnaire about the condition of a residential property. The answers referred to issues such as damp, an old consumer unit and an old boiler. After submitting the form, the buyer received a message saying they should register so the case could be reviewed, but they could not find the registration option on the website and asked what to do next.
Nick’s Explanation
Nick’s reply was practical rather than legal. In anonymised form, his response was essentially:
“Sorry for the late reply. Did you try to register on the site? If you had any issues, send me a message and I will help.”
The buyer later confirmed that they had managed to register using a mobile phone.
The key point from Nick’s response is that the immediate problem was a website access issue, not a concluded legal view on whether the buyer had a valid SDLT refund claim.
The Law
The legal issue that usually underlies this kind of enquiry is whether a property was “residential property” for SDLT purposes at the effective date of the transaction, usually completion.
The main legislation is found in the Finance Act 2003. SDLT on land transactions is charged under Part 4 of that Act. Whether property is residential or non-residential matters because different SDLT rates can apply.
For these cases, the important question is often whether the building was suitable for use as a dwelling at the date of purchase. If it was not suitable for use as a dwelling, the purchaser may argue that the transaction should not have been taxed as an acquisition of residential property in the usual way.
However, the legal threshold is now relatively high. In uninhabitable or not suitable for use cases, the Court of Appeal decision in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799 is particularly important. That case makes clear that substantial disrepair or outdated features do not automatically mean a property is unsuitable for use as a dwelling. The condition must be serious enough to cross a demanding threshold.
Analysis
There are really two separate issues here.
First, there is the administrative point. If a buyer completes a condition assessment questionnaire and is then asked to register, the next step is simply to complete that registration so the adviser can assess the facts in more detail. If the website does not display properly on one device, trying another device or browser may solve the problem. That is what appears to have happened here.
Second, there is the substantive SDLT point. A questionnaire mentioning damp, an old boiler or an old consumer unit does not by itself establish that the property was not suitable for use as a dwelling. Many older homes have defects, outdated systems or repair needs and still remain residential property for SDLT purposes.
When considering whether a claim has merit, the usual step-by-step approach is:
- Identify the condition of the property at completion, not after later works.
- Gather evidence such as surveys, photographs, invoices, lender reports and correspondence from the time.
- Ask whether the defects were so serious that the building could not realistically be used as a dwelling.
- Distinguish between disrepair and true unsuitability for use. Serious structural failure, lack of essential facilities, or conditions making occupation genuinely impossible may matter more than age or poor condition alone.
- Apply the current case law, including Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, which shows that the courts will not treat ordinary dilapidation or even significant repair issues as enough unless the facts are strong.
On the limited facts available here, issues such as bad damp, an old consumer unit and an old boiler would usually be starting points for investigation rather than proof of a valid refund claim.
Outcome
The practical outcome is straightforward. The buyer’s immediate problem was resolved once they successfully registered. That allowed the matter to move to the next stage, where the adviser could review whether the property condition might support an SDLT argument.
From a legal perspective, the presence of defects alone does not mean an SDLT refund is due. In modern SDLT litigation, especially after Mudan, the bar for showing that a dwelling was not suitable for use is relatively high.
Practical Steps
If you are in a similar position, the sensible next steps are:
- Complete the registration or enquiry process so your case can be reviewed properly.
- Keep a copy of the questionnaire answers you submitted.
- Collect contemporaneous evidence from the purchase date, including survey reports and photographs.
- Focus on whether the property was genuinely incapable of normal residential occupation at completion.
- Do not assume that damp, old electrics, an old heating system or general dated condition will be enough on their own.
- Check any proposed SDLT reclaim analysis against the current legal position, including Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.
Conclusion
If you cannot find the registration option after completing a property condition questionnaire, the immediate answer is simply to complete registration by another working route or device. But registration is only the start. Whether there is a real SDLT claim depends on the legal test for suitability for use as a dwelling, and that test is now applied strictly.
Legal References Used
- Finance Act 2003, Part 4
- Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799
This page was last updated on 22 March 2026.
See all questions and answers categorized in this sitemap. Or use Google site search below.




