(a) General rule.--To convert convertible real estate or add additional real estate pursuant to an option reserved under section 3206(1) (relating to contents of declaration; flexible condominiums), the declarant shall prepare, execute and record an amendment to the declaration (section 3219) and comply with section 3210 (relating to plats and plans). The declarant is the unit owner of any units thereby created. The amendment to the declaration must assign an identifying number to each unit formed in the convertible or additional real estate and reallocate common element interests, votes in the association and common expense liabilities. The amendment must describe or delineate any limited common elements formed out of the convertible or additional real estate, showing or designating the unit to which each is allocated to the extent required by section 3209 (relating to limited common elements).

(b) Creations within additional real estate.--Convertible or withdrawable real estate may be created within any additional real estate added to the condominium if the amendment adding that real estate includes all matters required by section 3205 (relating to contents of declaration; all condominiums) or section 3206 (relating to contents of declaration; flexible condominiums), as the case may be, and the plat includes all matters required by section 3210(b) (relating to plats and plans). This provision does not extend the time limit on conversion or contraction of a flexible condominium imposed by the declaration pursuant to section 3206(2).

(c) Liability for expenses and right to income.--Until conversion occurs or the period during which conversion may occur expires, whichever occurs first, the declarant alone is liable for real estate taxes assessed against convertible real estate and all other expenses in connection with that real estate. No other unit owner and no other portion of the condominium is subject to a claim for payment of those taxes or expenses. Unless the declaration provides otherwise, any income or proceeds from convertible real estate inures to the declarant.