Vt. Stat. tit. 24 § 4481
The amendment of this chapter and the repeal of prior enabling laws relating to zoning ordinances, subdivision regulations, or bylaws or any ordinance or regulation similar to a bylaw authorized by this chapter shall not invalidate any zoning ordinance, subdivision regulation, or bylaw or any such ordinance or regulation enacted under those prior enabling laws, except as follows. Effective September 1, 2005, the provisions of sections 4412 and 4413 of this title, and the provisions of subchapters 9, 10, and 11 of this chapter and the related definitions in section 4303 of this title, shall control over any inconsistent municipal regulations, ordinances, or bylaws. With respect to other provisions of this chapter, any previously enacted zoning ordinance, subdivision regulation, bylaw, or such similar ordinance or regulation shall be amended to conform with the provisions of this chapter by September 1, 2011.
24 V.S.A. § 4481