The legislation in respect of the 3% SDLT higher rates for additional dwellings is contained in Schedule 4ZA to the Finance Act 2003 (FA 2003). For an individual purchaser, FA 2003, Sch 4ZA, Pt 2, para 3 provides that if the property is a major interest in a single dwelling then the higher rates will apply if conditions A to D in FA 2003, Sch 4ZA, Pt 2, para 3(2) to FA 2003, Sch 4ZA, Pt 2, para 3(5) are present. A major interest in a single dwelling is a higher rates transaction for the purposes of FA 2003, Sch