Those dwellings with assessed values in the most recently ended tax year that are
not in excess of the average assessed value for such year shall qualify for a total
exemption from real property taxes under this Article. If the value of a dwelling
is in excess of the average assessed value for such year, then only that portion of
the assessed value in excess of the average assessed value shall be subject to real
property taxes, and the portion of the assessed value that is not in excess of the
average assessed value shall be exempt from real property taxes. Single-family homes,
condominiums, town homes, manufactured homes as defined in § 46.2-100 whether or not
the wheels and other equipment previously used for mobility have been removed, and
other types of dwellings of surviving spouses, whether or not the land on which the
single-family home, condominium, town home, manufactured home, or other type of dwelling
of a surviving spouse is located is owned by someone other than the surviving spouse,
that (i) meet this requirement and (ii) are occupied by such persons as their principal
place of residence shall qualify for the real property tax exemption. If the land
on which the single-family home, condominium, town home, manufactured home, or other
type of dwelling is located is not owned by the surviving spouse, then the land is
not exempt. (13-18-4.)