Previous use of a building: when it may count as a home for LTT
Previous use can matter
For Welsh Land Transaction Tax, an empty or run-down building may still be residential property. Consider its earlier use as a home and whether it could be used as one again.
- Immediate habitability is not the only issue.
- Past use and present condition both matter.
- The official source leaves some evidence questions unresolved.
Scroll down for the full analysis.
Read the original guidance here:
Previous use of a building: when it may count as a home for LTT
Previous use of a building for Land Transaction Tax
When you buy an empty or run-down building, its past can matter for Land Transaction Tax, Wales’s stamp duty tax. A building may still count as residential when people once used it as a home and it can serve as one again.
What this rule is about
The issue is whether the building counts as residential property. That can affect how Land Transaction Tax applies to your purchase. The law asks whether people use buildings as homes or whether those buildings suit that use.
A building need not be ready to move into that day. The official source tells you to also consider whether it can serve as a home again.
What the official source says
Welsh Revenue Authority guidance says to look at the building’s previous use and its present potential for residential use. It specifically says that immediate habitability is not essential.
- Check whether the building was previously used as a home.
- Consider whether it is capable of being used as a home again.
- Do not stop the review simply because it is not immediately habitable.
What this means in practice
An empty building is not automatically non-residential. Its condition matters. Its earlier use and realistic return to residential use matter too.
- Record the building’s current condition at the time of purchase.
- Keep information that addresses its earlier use.
- Do not rely only on the fact that nobody lives there now.
How to analyse it
Start with the building itself rather than its label in an advert or planning discussion, then ask what it was, what it is now, and what role it can realistically serve. Labels can mislead.
- Was it previously used as a home?
- What condition is it in now?
- Could it be used as a home again?
- Is the problem a lack of immediate comfort, or something more fundamental?
Example
Leah buys an empty former cottage that needs repairs before anyone can live there. The fact that it needs work does not end the question. Under the official guidance, she should consider its earlier residential use and whether it can serve as a home again.
Why this can be difficult in practice
Empty and damaged can still be residential. That is too simple. The difficult point is often whether the building remains capable of residential use, based on the facts at the relevant time.
- Past use may be unclear or poorly recorded.
- “Not immediately habitable” has no detailed explanation in the source.
- The source’s wording about evidence of former use is unclear where no residential history exists.
Key takeaways
- Previous use as a home can matter.
- A building need not be ready to occupy immediately.
- Its condition and realistic future use need careful checking.
Technical analysis
For advisers, and for anyone who wants to check the law behind this page. You do not need this section to understand the guidance above.
Legislation
- LTTA 2017 section 72 — when a building counts as residential property
Official guidance
The pages below are the Welsh Revenue Authority’s guidance. Guidance is not law. It sets out how the Welsh Revenue Authority reads the legislation, and it is not binding on you, on a tribunal or on a court. Where guidance and the legislation differ, the legislation wins. the Welsh Revenue Authority can also change or withdraw guidance, and it may not cover your facts.
Where this is not settled
- The source says that, where there is no history of residential use, evidence of former use must be supplied. That wording appears internally inconsistent and does not say what evidence is required.
- The source does not explain how far a building may have deteriorated before it is no longer suitable for use as a home.
Evidence you would need
This kind of case is decided on the facts of the individual property. These are the records that usually settle it, and the ones an adviser would ask you for.
- evidence addressing the building’s earlier use
- information showing whether it can be used as a home again
- details of its present condition and any work needed
Explore this with an AI
Readers often want to test their own situation. Copy the prompt below into ChatGPT, Claude or Gemini. It hands the model the actual legislation for this page rather than letting it answer from memory, and tells it to be explicit about what is uncertain. What comes back is information, not advice – check it against the links above.
I am researching Land Transaction Tax (LTT), the tax on property in Wales. It replaced Stamp Duty Land Tax in Wales on 1 April 2018, and SDLT does not apply in Wales. MY QUESTION Previous use of a building: when it may count as a home for LTT [Replace this with your own situation: what you are buying, the price, the dates, who the buyer is, and what you plan to do with the property.] THE LAW THIS TURNS ON - LTTA 2017 section 72 - when a building counts as residential property https://www.legislation.gov.uk/anaw/2017/1/section/72 Guidance page from the Welsh Revenue Authority on this topic (guidance, not law): https://www.gov.wales/land-transaction-tax-interpretation-provisions-technical-guidance HOW I WANT YOU TO ANSWER 1. Work from the legislation above. Read it before answering. Guidance from the Welsh Revenue Authority is its view of the law, not the law, and does not bind a tribunal or a court. 2. Tell me what the rule actually requires, in plain English. 3. Tell me which facts decide the answer, and which facts would change it. 4. Tell me what evidence I would need to support the position. 5. Be explicit about anything unsettled or fact-sensitive. Do not guess. 6. Your training data has a cutoff and SDLT rates and reliefs change at fiscal events. Say so if you are not sure the law is current. POINTS ALREADY KNOWN TO BE UNCERTAIN ON THIS TOPIC - The source says that, where there is no history of residential use, evidence of former use must be supplied. That wording appears internally inconsistent and does not say what evidence is required. - The source does not explain how far a building may have deteriorated before it is no longer suitable for use as a home. Do not give me a conclusion you cannot support from the provisions above.
Legislation links show the Land Transaction Tax and Anti-avoidance of Devolved Taxes (Wales) Act 2017 as it stood on 2025-11-17. The law may have changed since, and the rules that apply are those in force on the date of your transaction. The official guidance this page is based on is here.
This page was last updated on 3 September 2026
Useful article? You may find it helpful to read the original guidance here: Previous use of a building: when it may count as a home for LTT
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