How to compare land PSF without fooling yourself
Tenure, shape, condition and location can make identical land rates mean very different things.
Normalise the basics
Compare tenure, immediate street, plot shape, frontage and access before treating two land PSF figures as peers.
Separate house from land
A usable newer building carries value that a rebuild plot does not. Estimate likely works so the comparison reflects total acquisition cost.
Use a range
Thin landed markets rarely support false precision. A reasoned range with clearly stated adjustments is more useful than one magic number.