Not leased to or occupied by a tenant:
— Very little unclaimed and untenanted land.

synoniem: unoccupied.

Roget 187: absent, not present, away, nonresident, gone, from home; missing; lost; wanting; omitted; nowhere to be found; inexistence etc. 2^†.    empty, void; vacant, vacuous; untenanted, unoccupied, uninhabited; tenantless; barren, sterile; desert, deserted; devoid; uninhabitable.    ... meer laten zien

Roget 777a: exempt from, devoid of, without, unpossessed of^†, unblest with^†; immune from.    not having etc. 777; unpossessed^†; untenanted etc. (vacant) 187; without an owner.    unobtained^†, unacquired.    ... meer laten zien