A plot's listing price doesn't tell you what it will cost to actually build on it — soil conditions, access, and utility availability all affect construction cost and feasibility.
Soil testing reveals whether standard foundation work will suffice or whether the site needs additional structural work, which can meaningfully change a project budget.
Confirming road access width and existing utility connections (water, electricity, sewerage) before purchase avoids costly surprises during construction.
Verifying the plot's approval status with the relevant development authority protects against future disputes over ownership or construction rights.