Except as hereinabove set forth in § 172-38B(7), all land in the tract, together with any improvements thereon, shall remain, exclusively and in perpetuity, in single or undivided common ownership for the benefit of the dwelling unit owner or owners, including an owner or owners of condominium units, except that the tract may be divided, in whole or in part, into separate lots for the conveyance and transfer of individual dwelling unit lots; provided, however, that, in such event, all other land in the tract, together with any improvements thereon, shall remain, exclusively and in perpetuity, in single or undivided common ownership for the benefit of the dwelling unit owner or owners, including an owner or owners of condominium units.