In the high-stakes world of luxury property transactions, stamp duty land tax (SDLT) can add millions to acquisition costs, but savvy taxpayers armed with precise legal advice continue to secure substantial refunds against HMRC. The latest triumph comes from Raj and Varsha Sehgal, who in 2022 purchased a stunning £18.25 million apartment in London’s prestigious Grosvenor Square, only to face a hefty residential SDLT bill. By leveraging a modest basement storage unit as the key to a ‘mixed use’ classification, they convinced the First-tier Tribunal Tax (FTT) to slash their liability by £1,749,250. This demonstrates once again how technical compliance with Finance Act 2003, Schedule 6A can unlock multimillion-pound savings even in the face of HMRC resistance. This case builds on a series of taxpayer victories, including Christian Candy’s £4.3 million refund on a £68 million mansion through garden recharacterisation, a £47,000 win via non-residential evidence, and a £20,000 recovery after rigorous scrutiny of ancillary spaces, underscoring the critical need for meticulous documentation from day one.
£18.25m Grosvenor Square Flat
In a landmark First-tier Tribunal Tax (FTT) decision, Raj and Varsha Sehgal successfully challenged HMRC’s £1.7 million stamp duty land tax (SDLT) assessment on their 2022 purchase of a luxury £18.25 million apartment in Grosvenor Square, London. The couple argued the property qualified as ‘mixed use’ due to a separate basement storage unit measuring less than 2×4 metres, preventing classification as entirely residential under Finance Act 2003, Schedule 6A, which triggers higher SDLT rates only for wholly residential premises. The tribunal acknowledged a “strained interpretation” but ruled that the legislation’s explicit wording compelled the lower mixed-use rates, because the storage unit on a different floor created non-residential elements, despite its minor value relative to the flat.
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Taxpayers’ Mixed-Use Claim v HMRC Rejection
HMRC initially classified the entire acquisition as residential, applying top SDLT bands to the flat plus storage unit. The Sehgals amended their return, claiming mixed-use treatment for a substantial refund, but HMRC refused, insisting the cupboard served domestic purposes ancillary to the dwelling. The appeal hinged on whether the “whole of the premises” met residential criteria, with the separate-floor location proving pivotal.
Evidence: Storage Unit Dimensions, Location and Statutory Test
Critical evidence included floor plans showing the <2x4m cupboard in the basement, distinct from the apartment, supporting non-residential use. Finance Act 2003, Sch 6A para 7 defines dwellings strictly; any non-residential land precludes higher rates. The FTT rejected HMRC’s dominance argument, prioritising literal statutory compliance over policy intent.
First Tier (Tax) Tribunal Ruling: £1.7M Refund Ordered
The tribunal ruled for the Sehgals, directing HMRC to reclassify as mixed-use and refund £1,749,250 precisely. It noted the “surprising result” but upheld the law’s clarity: residential rates demand 100% residential land. HMRC must now adjust, highlighting tribunal deference to technical arguments in high-value disputes.
Key Takeaways for SDLT Buyers and Planners
- Secure detailed plans and usage affidavits for ancillary spaces like storage from acquisition to support mixed-use claims.
- Separate locations (e.g., basement units) strengthen cases against HMRC’s ancillary-use defence.
- Decision aligns with precedents like Candy, where minor features yielded multimillion refunds; act swiftly on amendments within statutory windows.
Broader Implications Amid SDLT Reform Pressures
Experts predict budget scrutiny on such loopholes yet current law binds HMRC and tribunals. Buyers of London luxury flats should evaluate mixed-use potential proactively, especially post-2022 purchase spikes.
LEXLAW: Specialist SDLT Dispute Resolution
Our ex-HMRC Barristers and dual-qualified Solicitors in Middle Temple excel in SDLT appeals, mirroring successes in Candy-style refunds and tribunal victories. We provide privileged strategy to maximise refunds confidentially.
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