Per-square-foot is a comparison unit
A price per square foot lets you compare plots of different sizes, but it does not value a specific plot. A corner plot, a plot with a view and a plot with access constraints are different products.
Plot size and shape
Check the registered area, the shape and the frontage. An irregular plot can be harder to develop, and a plot that looks large on a map may include an access strip or a setback.
Permitted use and permits
Residential, commercial and mixed-use land are not interchangeable. Ask what the plot is permitted to be used for and which approvals are needed before assuming a development cost.
Service charges and infrastructure
Land in a master community can carry service charges, infrastructure contributions and design-review fees. Ask what is payable before and after construction.
Check the registry, not the advert
A listing price is an asking price. A recorded sale is evidence of a transaction. Ask for the registry entry, the date and the plot number before relying on a per-square-foot figure.