Section 20B
Vesting or transfer of an undivided interest in property
Every conveyance either on sale or by way of gift or settlement which operates to vest or transfer an undivided interest in real property, shall contain an affidavit of the transferee certifying that the transaction effected by the instrument does not form part of a larger transaction or series of transactions completed or to be completed within a period of twelve months after the date of the first of the instruments employed to complete the conveyance of the property.
(2)
Where the transaction effected by the instrument forms part of a larger transaction or series of transactions, ad valorem duty upon that instrument and upon any other instrument following shall be calculated on the aggregate of the consideration or market values of the separate parts or parcels being conveyed, whichever is the higher, at the rates specified under Item 32(a), (aa) or (ab) of the First Schedule.