[Amended 11-21-2016 by L.L. No. 17-2016; 12-19-2016 by L.L. No. 23-2016]
Nothing in this chapter shall be deemed to require any change in the plans, construction or designated use of any building complying with laws then in effect for which a permit was duly issued and on which actual construction was lawfully begun prior to the effective date of this chapter and upon which building actual construction has been diligently carried on. "Actual construction" is hereby defined to be the actual placing of construction materials in their permanent position, fastened in a permanent manner; except that, where a basement or cellar is being excavated, such excavating shall be deemed to be actual construction or where demolition or removal of an existing structure has been substantially begun preparatory to rebuilding, such demolition and removal shall be deemed to be actual construction, provided that actual construction work shall be diligently carried on to the extent of completing the ground-story framework, including the second tier of beams, within six months and the whole building within one year from the effective date of this chapter. Similarly, whenever the provisions of this chapter are amended in the future so as to effect a change in the permitted use of land or buildings, the provisions hereof, with regard to building permits issued prior to the effective day of this chapter, shall apply to building permits issued for construction in such changed district prior to the effective date of the amendment effecting such change. Except with respect to amendments concerning mechanical rock excavation and blasting, amendments to this chapter adopted between October 17, 2016, and December 31, 2016, shall not affect development(s) for which final subdivision approval or site plan approval was granted before October 17, 2016.