No condominium shall be expanded except in accordance with the provisions of the declaration and of this chapter. Any such expansion shall be deemed to have occurred at the time of the recordation of plats and plans pursuant to subsection C of § 55.1-1920, together with an amendment to the declaration, duly executed by the declarant, including all of the owners and lessees of the additional land added to the condominium. Such amendment shall contain a legal description by metes and bounds of the land added to the condominium and shall reallocate undivided interests in the common elements in accordance with the provisions of subsection B of § 55.1-1918. Such amendment may create convertible or withdrawable lands or both within the land added to the condominium, but this provision shall not be construed in derogation of the time limits imposed by or pursuant to subdivision D 3 of § 55.1-1916 and subsection C of § 55.1-1924.