The "permit granting authority" shall mean the Board of Zoning
Appeals.
Unless otherwise specifically designated under this bylaw, the
special permit granting authority shall be the Board of Zoning Appeals.
Unless a lesser time is provided in this bylaw or specified
in the decision of the special permit granting authority, a special
permit shall lapse not later than 24 months, inclusive of such time
required to pursue or await determination of an appeal under MGL c.
40A, § 10, from the grant of such permit if a substantial
use thereof has not sooner commenced except for good cause or, in
the case of a permit for construction, if construction has not begun
by such date except for good cause.