The Registrar-General may, under the Real Property (Units Titles) Act , register a units plan of subdivision of the development area, or that area as further subdivided, without lodgment of –
(a) the documents mentioned in section 9B(d) of that Act so far as it relates to a building existing before the commencement date for which a building certificate within the meaning of section 21B of the Unit Titles Act was not required; or
(b) the documents mentioned in section 9B(e), (f) and (g) of that Act.