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The charge to ATED for a chargeable period is based on the annual chargeable amount, as discussed at B6.707. The annual chargeable amount in turn depends on the taxable value of the single-dwelling interest (SDI). This article discusses the meaning of the taxable value of anSDI. This is equal to its market value on the latest of the following valuation dates¹:

1. Ìý

   •ÌýÌýÌýÌý date of acquisition

2. Ìý

   •ÌýÌýÌýÌý 1 April 2012

3. Ìý

   •ÌýÌýÌýÌý 1 April every 5 years after 1 April 2012 (ie 1 April 2017, 1 April 2022 and so on)

4. Ìý

   •ÌýÌýÌýÌý the date of a substantial acquisition or substantial part disposal of an interest in an existing SDI (see below)

5. Ìý

   •ÌýÌýÌýÌý in the case of newly built or converted property, when it is completed or, if earlier, when it is first occupied, see B6.740–B6.743

The five-yearly valuation dates (ie 1 April 2012, 1 April 2017 and so on) apply to the next five chargeable periods beginning the following 1 April (eg the 1 April 2022 valuation date