(1) Where a registered trader is engaged in the exercise of the trade or profession of a builder, such trader shall keep separate accounts, in such form as the Comptroller may prescribe, showing the measure of profits he or she claims in respect of—
(a) his or her trade or profession as a builder; and
(b) the sale of newly constructed dwelling houses.
(2) A registered trader shall produce his or her accounts for inspection by the Comptroller or by the Authority at his or her or its request.