N.J. Stat. Ann. § 54:4-8.41a

The surviving spouse of a deceased citizen and resident of this State who during his or her life received a real property tax deduction pursuant to this act shall be entitled, so long as he or she shall remain unmarried and a resident in the same dwelling house with respect to which said deduction was granted, to the same deduction, upon the same conditions, with respect to the same real property, notwithstanding that said surviving spouse is under the age of 65 and is not permanently and totally disabled, provided that said surviving spouse is 55 years of age or older at the time of the death of said citizen and resident.