abutter(n = noun.person) - the owner of contiguous property;
is a kind of landholder, landowner, property owner
Derived form verb abut1
One who, or that which, abuts. Specifically, the owner of a contiguous estate; as, the abutters on a street or a river. [1913 Webster]
abutter, n. Law the owner of an adjoining property.
N contiguity, contact, proximity, apposition, abuttal, juxtaposition, abutment, osculation, meeting, appulse, rencontre, rencounter, syzygy, coincidence, coexistence, adhesion, touching, (touch), borderland, frontier, tangent, abutter, contiguous, touching, in contact, conterminous, end to end, osculatory, pertingent, tangential, hand to hand, close to, with no interval.