Convert property super built-up area to actual usable RERA carpet area using loading factor.
Result
RERA mandates that property sale agreements explicitly disclose net usable carpet area.
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Carpet Area = Super Built-up Area × [1 - (Loading Factor% / 100)]
1,500 sq ft super built-up with 25% loading at ₹7,500/sq ft.
Usable Carpet Area: 1,125 sq ft | Total Flat Cost: ₹1.125 Crore | Effective Carpet Rate: ₹10,000/sq ft.
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Open calculatorUnder the Real Estate (Regulation and Development) Act (RERA), carpet area is the net usable floor area of an apartment, excluding the area covered by external walls, common service shafts, and open balconies.
The loading factor represents the proportion of common areas (corridors, elevators, clubhouse, lobby) added to your private carpet area to determine the billable 'super built-up area'.
Before RERA made carpet area disclosures mandatory, developers sold apartments on vague 'super area' metrics with loading factors often exceeding 35%. Calculating your true usable carpet area protects against paying inflated rates for common space.