There shall be no material alteration of or substantial addition to the common elements or limited common elements except as authorized by the declaration. No unit owner shall contract for or perform any maintenance, repair, replacement, removal, alteration, or modification of the common elements, or limited common elements, or any additions thereto, except through the association and its officers. No unit owner shall take or cause to be taken any action within his unit which would jeopardize the soundness or safety of any part of the condominium property or impair any easement or right of any unit owner or affect the common elements, or limited common elements, without the unanimous consent of all unit owners who might be affected thereby.