Section 9. In the event of any conflict between this chapter and chapter one hundred and eighty-three A or chapter one hundred and fifty-seven, the provisions of this chapter shall prevail, but this chapter does not invalidate or otherwise affect rights or obligations vested under said chapter one hundred and eighty-three A or said chapter one hundred and fifty-seven, or the manner of their exercise or enforcement.

The subdivision control law shall not apply to the division of a building into time-share units or to the creation of time-shares in a unit.

Nothing in this chapter shall be deemed to limit or otherwise affect the authority of the board of registration of real estate brokers and salesmen to regulate out-of-state real property sales within the commonwealth.