When a dwelling is uninhabitable
Owning a residential property that becomes uninhabitable can create a tricky situation—both practically and from a tax perspective. Whether you’re a landlord dealing with structural damage, a homeowner facing major renovation works, or someone caught between properties, HMRC’s rules around uninhabitable dwellings deserve careful attention. Getting this wrong could impact your tax bill, so let’s walk through what you need to know.
What counts as “uninhabitable”?
HMRC doesn’t publish an exhaustive checklist, but broadly speaking, a property is uninhabitable when it’s genuinely unsafe or unsuitable for occupation. This might include:
- Structural damage (subsidence, roof collapse, flooded foundations)
- Lack of essential services (no working plumbing, heating, or electrics)
- Health hazards (significant damp, asbestos, or vermin infestation requiring remedial work)
- Missing key features that would make it unliveable
Importantly, minor cosmetic issues—peeling wallpaper, worn carpets, or outdated décor—won’t qualify. The property must be objectively unsuitable for habitation, not merely inconvenient.
Furnished Holiday Lettings (FHL)
If you operate a furnished holiday let and the property becomes uninhabitable due to damage or structural works, you may be able to claim relief under the FHL rules. The key is that you must take action to restore it within a reasonable timeframe—typically two years, though HMRC can extend this in exceptional circumstances.
During the period of uninhabitability, you won’t be able to let the property, which means no rental income. However, you can continue to claim certain expenses against income from other sources, provided the property is genuinely being restored. Eligible costs might include:
- Mortgage interest (though this doesn’t receive income tax relief in the normal way for FHL)
- Council tax (if payable)
- Insurance premiums
- Professional fees for surveyors or architects
Keep meticulous records of all expenses and maintain evidence that repairs are actively underway. If the property sits empty for years without genuine repair attempts, HMRC may challenge the claim.
Buy-to-Let and Standard Rental Properties
For standard residential buy-to-let properties, the tax treatment differs. Once a property is uninhabitable, you cannot claim a loss against other income—the uninhabitable period is treated as a break in the lettings business.
During uninhabitability, you cannot deduct most expenses from rental income because there is no rental income. This is a significant issue for landlords with high carrying costs. However, some expenses may still be claimable:
- Mortgage interest (up to the basic rate of income tax, 20%, under current rules, though this is gradually being phased out for higher earners)
- Council tax
- Certain maintenance costs directly related to restoration
Once you restart letting, you should be able to resume normal expense deductions. The key is demonstrating that the property is genuinely uninhabitable and that you’re taking reasonable steps to restore it.
Capital Allowances and Repairs vs. Improvements
Be clear on the distinction. Repairs are deductible as revenue expenses; improvements are capital and form part of your cost base for Capital Gains Tax (CGT).
Replacing a broken window is a repair. Replacing all windows with new double-glazing is an improvement. If your property requires major structural work to make it habitable again, much of this may be classified as improvement rather than repair, which means it won’t reduce your taxable profit but will increase your CGT cost base when you eventually sell.
If you’re unsure, seek specialist advice—misclassification can trigger HMRC enquiries.
Principal Private Residence Relief (PPR)
If you own a residential property as your main home and it becomes uninhabitable, Principal Private Residence Relief (PPRR) is still available when you sell, provided you occupied it as your main residence at some point. The uninhabitable period doesn’t automatically disqualify you, but the rules are nuanced. If you leave a property empty and uninhabitable for extended periods without intention to return, HMRC may argue you’ve abandoned it as your main residence, affecting your CGT position.
Action Points
Document everything: photographs, surveyor’s reports, council communications, and repair quotes. Keep detailed records of all expenses incurred. Notify your mortgage lender—some lenders have specific requirements about uninhabitable properties. Most importantly, take prompt action to restore the property; prolonged inaction weakens any claim for relief.
For tailored advice, contact Severn Accounting — we’re here to help.