Cost per carpet square foot
The honest price of usable space: total flat price divided by RERA carpet area (not super built-up). It's the number that turns wasted space from an abstraction into a rupee figure — and the basis for comparing the real value of two homes.
The honest price of space
A ₹55 lakh flat with 650 sq ft carpet area costs ~₹8,460 per usable sq ft. Every wasted square foot is that much money sitting idle — which is why the audit comes before the spend.