Undertaking work on a rental property while empty

If you own a rental property, there’s a good chance you’ve considered—or are currently planning—renovation works whilst the property sits vacant between tenancies. It’s a sensible time to tackle maintenance and improvements. However, the tax implications of undertaking work on an empty rental property can be surprisingly complex. Understanding what you can and cannot claim as a deductible expense is crucial for your Self Assessment return and your overall tax position.

Revenue versus Capital Expenditure

The fundamental distinction that HMRC makes is between revenue (day-to-day) expenses and capital (structural or long-term improvement) expenditure. This distinction becomes particularly important when your property is empty.

Revenue expenses—repairs, decoration, and routine maintenance—are generally deductible against your rental income. If you’re redecorating the lounge, fixing a leaking tap, or patching the roof, these are typically classed as repairs and can be offset against profits.

Capital expenditure, by contrast, relates to improvements that add value to the property, extend its life, or upgrade its standard. Installing a new boiler, replacing windows entirely, or converting a bedroom into a bathroom falls into this bracket. You cannot claim capital expenditure as a direct deduction; instead, these costs form part of the property’s cost basis. When you eventually sell, capital gains tax may apply, although principal private residence relief and other exemptions may shield you from tax.

The challenge is that the line between repair and improvement isn’t always clear-cut. HMRC’s guidance states that repairs restore something to its original state, whilst improvements enhance it beyond that. Replacing a broken window is a repair; installing new double glazing throughout is an improvement.

Timing Considerations for Empty Properties

When a property is empty, HMRC is particularly attentive to the nature of works undertaken. The logic is straightforward: if a property is not generating rental income, why are you incurring expenses? HMRC may scrutinise whether work carried out during a void period is genuinely a repair or whether it’s actually an improvement disguised as maintenance.

For example, if you completely strip and replaster internal walls “whilst empty,” HMRC might argue this goes beyond simple redecoration and constitutes a capital improvement. However, if you’re filling cracks and repainting, that’s more defensible as a repair.

Keep meticulous records and documentation. Obtain detailed quotations and invoices that clearly describe the work undertaken. Photographs before and after can support your position. If you can demonstrate that the work was necessary to restore the property to lettable condition—rather than to upgrade it—you’ll be on firmer ground.

Furnished Holiday Let Status

If your property qualifies as a furnished holiday let (FHL), the rules shift somewhat. FHL properties benefit from special tax treatment, including potentially more generous capital allowances. However, to qualify, your property must be available for letting for at least 140 days per year and actually let for at least 70 days. Periods when the property is empty whilst undergoing refurbishment might count against these thresholds, so timing matters.

Speak with your accountant if you think your property might qualify for FHL status—the tax benefits can be significant and may change how you approach renovation expenditure.

Claiming Expenses on Your Tax Return

When completing your Self Assessment return, rental income and allowable expenses are reported on pages 5 and 6 of the tax return, or via the online Self Assessment portal. Ensure you’re only claiming revenue expenses, not capital costs.

Keep all invoices and receipts for at least six years, as HMRC can enquire into your returns within this period. If your property remained empty for an extended period—say, several months—and you incurred substantial costs, be prepared to explain why and how those costs relate to maintaining the property’s lettable status rather than improving it.

Conclusion

Maintaining and repairing rental properties is part and parcel of being a landlord. The tax system recognises this by allowing revenue expenses to be deducted. The critical task is to properly categorise your expenditure and maintain robust documentation to support your position. When works are substantial or when the line between repair and improvement feels blurred, professional advice is invaluable.

For tailored advice, contact Severn Accounting — we’re here to help.