(a) Common elements.--A declarant may maintain offices and models in the common element portion of the condominium only in connection with the management, sale or rental of units owned by the declarant in the condominium 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, he ceases to have any rights with regard to such portions of the common elements so used unless such portions are removed promptly from the condominium 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 limitations in the declaration, a declarant may maintain signs in his units and on the common elements advertising units in the condominium 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 the management, sale or rental of units owned by the declarant in the condominium in his unit or units in the condominium, 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 declarant's rights pursuant to this subsection by specific reference thereto.