(a) Common elements.--A declarant may maintain offices and models in the common element portion of the planned community only in connection with management of or sale or rental of units owned by the declarant in the planned community if the declaration so provides and specifies the rights of a declarant with regard to the number, size, location and relocation thereof. At such time as a declarant ceases to be a unit owner, the declarant ceases to have any rights with regard to such portions of the common elements so used unless the portions are removed promptly from the planned community in accordance with a right to remove reserved in the declaration. Upon the relocation of a model or office constituting a common element, a declarant may remove all personal property and fixtures therefrom. Any fixtures not so removed shall be deemed common elements, and any personal property not so removed shall be deemed the property of the association.

(b) Signs.--Subject to any limitation in the declaration, a declarant may maintain signs in the declarant's units and on the common elements advertising units in the planned community owned by the declarant for sale or lease.

(c) Units.--A declarant shall have the right to locate, relocate and maintain offices and models used only in connection with management of or sale or rental of units owned by the declarant in the planned community in the declarant's unit or units in the planned community notwithstanding the fact that the declaration would otherwise preclude use of units for such purpose, but subject to all other provisions in the declaration, including without limitation, modification or elimination of the declarant's rights under this subsection by specific reference thereto.