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Case summary · 5 August 2026

Oakwood Great Oak Ltd v The Commissioners for HMRC

Stamp Duty Land TaxSection 116 FA 2003Residential PropertySuitable For Use As A DwellingMudan V HMRCAsbestos ContaminationMultifactorial AssessmentStructural DefectsSchedule 4ZADemolition And RedevelopmentP N Bewley LtdHMRC V RidgwayEffective Date Of Transaction

Judgment summary

This appeal concerned the Stamp Duty Land Tax (SDLT) treatment of the Appellant's acquisition of a property known as 'Great Oak', Prowse Avenue, Bushey Heath, for consideration of £2,400,000, with an effective date of transaction of 29 November 2022 (2, 73).

The Appellant had filed its SDLT return on a non-residential basis, but HMRC opened an enquiry and issued a Closure Notice concluding the property was residential property within s.116(1)(a) Finance Act 2003, a conclusion upheld on review (3-5). The Appellant appealed.

The Tribunal, applying the guidance in Mudan v HMRC (Upper Tribunal and Court of Appeal), undertook a multifactorial evaluative assessment of the condition, characteristics and history of the property at the effective date (7, 21, 126-131). It heard evidence from a director of the Appellant and an asbestos consultant, and considered competing structural and costing reports (22-23).

The Tribunal found that although the property had previously been used as a dwelling and remained physically standing with a recognisable residential layout, it had, by the effective date, suffered extensive deterioration, significant structural defects, widespread asbestos contamination requiring specialist remediation, and was unsafe for occupation (124-125, 167-168). Considering these matters cumulatively, the Tribunal concluded the property had ceased to possess the characteristics and identity of a dwelling and was therefore not 'residential property' within s.116(1)(a) FA 2003 at the effective date (175-177). The appeal was allowed (178).

Background

The Appellant, Oakwood Great Oak Ltd, purchased the property 'Great Oak', Prowse Avenue, Bushey Heath, on 29 November 2022 for £2,400,000 (2, 73). The property had originally been constructed in the 1930s as a substantial detached dwelling house, with a two-storey extension added in the 1960s, and had been used only for residential occupation (71-72).

At the date of acquisition the property had been vacant for approximately three to four years (74). The Appellant regarded the property as a development opportunity from the outset and intended to seek planning permission to demolish the existing house and redevelop the site with two new houses (25, 43, 160).

The Appellant submitted an SDLT return on 13 December 2022 treating the transaction as non-residential (3). HMRC opened an enquiry on 7 September 2023 and issued a Closure Notice on 22 December 2023 concluding the property was residential property under s.116(1)(a) FA 2003 (4). HMRC upheld this conclusion in a Review Conclusion Letter dated 2 May 2024 (5), and the Appellant appealed to the Tribunal on 30 May 2024 (6).

Core dispute

The issue for the Tribunal was whether the property was 'residential property' within s.116(1)(a) Finance Act 2003 at the effective date of the transaction, namely whether it was 'a building that is used or suitable for use as a dwelling' (7-8).

The Appellant argued that, notwithstanding its historical use as a dwelling, the property's condition at the effective date meant it had ceased to possess the characteristics of a dwelling and had become, in substance, a development site requiring demolition. It relied on structural and costing reports, evidence of widespread asbestos contamination, and submitted that economic viability of remediation was a relevant factor in the multifactorial assessment required by Mudan (31-55).

HMRC argued that the correct approach, per Mudan, focused on the fundamental characteristics and structure of the building rather than immediate habitability, that economic viability formed no part of the statutory test, and that since the defects (including asbestos) were capable of remedy and had in fact been remedied, the property retained its residential character (56-70).

Court findings

The Tribunal accepted that the correct legal approach was the multifactorial evaluative assessment set out in Mudan, directed to whether the building retained the fundamental characteristics and identity of a dwelling at the effective date, not whether it was suitable for immediate occupation (126-131).

The Tribunal found that the property remained physically standing with a recognisable residential layout, and that neither structural remediation nor asbestos remediation was physically impossible (139, 165). These factors weighed in favour of HMRC's position (134, 166).

However, the Tribunal also found that by the effective date the property had been vacant for three to four years and had undergone substantial deterioration, including damp, mould, water ingress, defects affecting the retaining wall, terrace and extension, and widespread asbestos-containing materials in numerous locations requiring specialist licensed remediation (79-83, 99-115, 124, 137, 167).

The Tribunal found that the cost of remediation, though not established with precision, was of an exceptional magnitude, reflecting the scale of intervention required (116-123). It found that asbestos remediation would not simply have rendered the property safe while leaving it intact, but would have required removal of associated services and installations, necessitating substantial reinstatement works before the property could again function as a dwelling (111-114, 172).

The Tribunal rejected the proposition that the statutory question could be answered simply by asking whether defects were theoretically remediable, holding that such an approach would deprive the statutory test of meaningful content (142-144). It held that the scale, complexity and consequences of the required works were relevant to the ultimate question of whether the building retained the characteristics of a dwelling (146, 169).

Considered cumulatively, the Tribunal found that prolonged vacancy, extensive deterioration, widespread asbestos contamination, significant structural defects, safety concerns, and the exceptional scale and intrusiveness of the works required had fundamentally altered the character and identity of the property, such that it had ceased to be suitable for use as a dwelling at the effective date (173-176).

Outcome

The Tribunal held that the property was not residential property within s.116(1)(a) FA 2003 at the effective date of the transaction (177). The appeal was allowed (178).

Major issues / areas of contention

  • Whether the property was 'residential property' within s.116(1)(a) Finance Act 2003 at the effective date of the transaction.
  • The correct legal approach to determining whether a building is 'suitable for use as a dwelling', applying Mudan v HMRC (Upper Tribunal and Court of Appeal).
  • Whether previous residential use and a recognisable residential layout at the effective date were determinative of the property's residential character.
  • The relevance of structural defects, extensive deterioration and widespread asbestos contamination to suitability for use as a dwelling.
  • Whether economic viability or the projected cost of remediation formed part of the statutory multifactorial assessment.
  • Whether the theoretical possibility of repair was sufficient to preserve residential character regardless of the scale and consequences of the works required.
  • The weight to be given to competing structural reports (the Geared Reports and the Morton Report) and the Shreeves Costing Report.
  • The relevance of the Appellant's intention to demolish and redevelop the site, and the grant of planning permission, to the objective statutory question.