The Uninhabitable Property SDLT Rule
Under HMRC guidance, a property that is not suitable for use as a dwelling at the point of completion should be treated as non-residential for SDLT purposes. Non-residential rates are significantly lower than residential rates — and the additional dwelling surcharge does not apply.
The key test is straightforward: did the property have a functioning kitchen AND a functioning bathroom at the date of legal completion? If either was absent or genuinely non-functional, the property may qualify as uninhabitable and should have been taxed at non-residential rates. For a full overview, see our uninhabitable property stamp duty guide.
What “Uninhabitable” Actually Means
HMRC's test is practical, not subjective. A property is uninhabitable for SDLT purposes if it lacks:
- A functioning kitchen — defined as having a sink, cooking facilities, and food preparation area in working order.
- A functioning bathroom — defined as having a toilet, basin, and bath or shower in working order.
Cosmetic disrepair, damp, mould, or dated fixtures are NOT sufficient on their own — the facilities must be genuinely non-functional or absent. A property with a tired 1970s kitchen that still works is habitable. A property where the kitchen has been stripped out is not.
Common Scenarios
The following situations commonly give rise to uninhabitable property SDLT claims:
- Derelict or fire-damaged property — bought for renovation where the interior is gutted or severely damaged.
- Property with stripped-out kitchen — the previous owner removed kitchen units, appliances, or plumbing before completion.
- Structural damage — subsidence, flood damage, or roof collapse rendering the property unliveable at the point of completion.
- Former commercial property conversion — purchased mid-conversion from commercial to residential use, before kitchen or bathroom facilities were installed.
The Potential Saving
The difference between residential and non-residential SDLT rates can be substantial, particularly on higher-value properties:
- £400,000 purchase: Residential SDLT = £10,000. Non-residential SDLT = £9,500. Saving: £500.
- £700,000 derelict farmhouse: Residential SDLT = £25,000. Non-residential SDLT = £19,500. Saving: £5,500.
On high-value properties the saving can exceed £20,000–£50,000. And because the additional dwelling surcharge (currently 5%) does not apply to non-residential transactions, the total saving can be even larger for buyers who already own another property.
You can use our Chattel Checker to assess individual items, or check the claim deadline guide to confirm you're still within the 4-year window.
Evidence You Need
HMRC takes uninhabitable property claims seriously and may open a compliance check. Strong evidence is essential:
- Photographs taken at or around the completion date showing the condition of the kitchen and bathroom.
- A RICS survey or homebuyer's report noting the condition of the property — particularly any references to the kitchen or bathroom being non-functional.
- Completion statement from your solicitor confirming the purchase details.
- Any correspondence about the condition of the property before purchase — emails with the estate agent, building control records, or local authority notices.
Retrospective evidence (photos taken after completion, or renovation invoices) can support a claim but contemporaneous evidence is significantly stronger. If you took photos before starting renovations, these are your most valuable asset.
For professional support with an uninhabitable property claim, you can connect with a vetted SDLT specialist or use the DIY Claim Pack to submit the amendment yourself.
Frequently Asked Questions
What counts as uninhabitable for stamp duty?
HMRC's test is whether the property had a functioning kitchen AND a functioning bathroom at the date of completion. If either was absent or non-functional, the property may qualify as uninhabitable and should have been taxed at non-residential SDLT rates.
Can I claim if I've already renovated the property?
Yes — the test is assessed at the point of completion, not at the time of the claim. If you have evidence of the condition at completion (surveys, photos, solicitor notes), a retrospective claim is possible within the 4-year amendment window.
Does the 3% surcharge apply to uninhabitable properties?
No — if a property qualifies as uninhabitable (non-residential for SDLT), the additional dwelling surcharge does not apply. This can represent a significant additional saving on top of the lower non-residential rates.