Where tax is charged on a person for a chargeable period with respect to a single-dwelling interest the person must deliver a return for the period with respect to the interest.
A return under subsection (1) must be delivered by the end of the period of 30 days beginning with first day in the period on which the person is within the charge with respect to the interest.
If the first day in the chargeable period on which the person is within the charge with respect to the interest ("day 1") is a valuation date only because of section 124 (new dwellings) or section 125 (dwellings produced from other dwellings)—
Where a person—
subsection (2) has effect as if it required the return mentioned in paragraph (a) to be delivered by the later date.
A return under this section must be delivered to an officer of Revenue and Customs, and is called an "annual tax on enveloped dwellings return".