Any consent required by this subsection shall be deemed to be given if, upon written notice by certified and first class mail, provided by the governing body of the organization of unit owners of a proposed action hereunder, to the unit owner or mortgagee whose consent is required, such unit owner or mortgagee fails to object within 60 days of the date of mailing of such notice. The consent of each mortgagee, to the extent required hereunder, shall be counted separately as to each unit upon which such mortgagee holds a mortgage, based upon one vote for each unit. In no event may a consent required of a mortgagee under this subsection be withheld unless the interests of the mortgagee would be materially impaired by the action proposed. In the event of any conflict between the provisions of this subsection and of the master deed, trust or by-laws or other governing documents of the condominium, this subsection shall control. Any third party interested in title to said condominium or condominium unit or units may conclusively rely upon the recitation of compliance contained within any instrument recorded pursuant to this subsection.
Mass. Gen. Laws ch. 183A, § 5