"unbuilt land" is a correct and usable part of a sentence in written English.
You can use it when referring to land that is either undeveloped or has been previously developed but is now unoccupied. For example: "The city council approved the construction of a new housing development on the unbuilt land near the city center."
With acres of cheap, unbuilt land so close to the city, Kolkata's poorest people end up here hoping to make a living.
As heir to a major British fortune on the one hand (her father was the daredevil industrialist and politician Sir James Goldsmith) and, on the other, to this unbuilt land from a Bolivian tin magnate grandfather, she decided to leave most of the property alone.
For example, a neighbourhood with a big portion of unbuilt land and a high population density is likely to be characterised by residential towers.
Smaller values of PUL mean that there are fewer buildings on the area considered and thus there is more unbuilt land.
In particular, more deprived neighbourhoods of urban UK were found to be characterised by higher population density, more unbuilt land, a higher presence of dead-end roads, and a more regular street pattern.
In four cities out of six, deprived English neighbourhoods appeared to be characterised by high population density, vast portions of unbuilt land, numerous cul-de-sac, and regular street patterns.
Monumental and institutional buildings take their place in a loose and predominantly residential urban fabric that leaves much land unbuilt even in the areas of densest development.
Most of the development is financed by sales of unbuilt real estate, much of it as timeshares.
These urban developments converge in as-yet-unbuilt real estate dreamscapes such as 'Railway City' on the lands of the privatized Kenya Railways.
But the soil, unbuilt upon since perhaps forever, was not interested in my tower vision.
While a new airport has opened 60km from the city, Golden City remains unbuilt with long walls surrounding the land.
