(1) If the condominium documents expressly permit the subdivision of any condominium units, then the condominium units may be subdivided in accordance with this section and any restrictions not otherwise unlawful which the condominium documents may specify. A condominium unit shall not be subdivided unless the condominium documents expressly permit it.

  (2) If the co-owner of a condominium unit which may be subdivided desires to subdivide the condominium unit, then the principal officer of the association of co-owners or other persons as the condominium documents specify, shall, upon written application of the co-owner, prepare and execute an amendment to the master deed duly subdividing the condominium unit pursuant to the condominium documents and this act.

  (3) An amendment to the master deed shall assign new identifying numbers to the new condominium units created by the subdivision of a condominium unit and shall allocate to those condominium units, on a reasonable basis, all of the undivided interest in the common elements appertaining to the subdivided condominium unit. The new condominium units shall jointly share all rights, and shall be equally liable, jointly and severally for all obligations, with regard to any limited common elements assigned to the subdivided condominium unit except to the extent that an amendment shall provide that portions of any limited common element assigned to the subdivided condominium unit exclusively should be assigned to any, but less than all, of the new condominium units.

  (4) An amendment to the bylaws shall allocate to the new condominium units, on a reasonable basis, the votes in the association of co-owners allocated to the subdivided condominium unit, and shall reflect a proportionate allocation to the new condominium units of the liability for expenses of administration and rights to receipts of administration formerly appertaining to the subdivided condominium unit.