What is the average carpet-to-built-up area ratio in Indian apartments?

The average carpet-to-built-up area ratio in Indian apartments typically falls between 70% and 82%, meaning the actual usable carpet area is usually 18-30% less than the built-up area quoted by builders. This gap accounts for wall thickness, common areas, and shared amenities factored into pricing.

What the Ratio Includes

• Carpet area covers only the actual usable floor space within the walls of the unit.
• Built-up area adds wall thickness, balconies, and internal utility spaces.
• Super built-up area further includes a share of lobbies, staircases, and clubhouse space.

Typical Ratios Across Project Types

• Budget housing projects: around 75-82% carpet-to-built-up ratio.
• Mid-range apartments: typically 70-78%, depending on amenity load.
• Luxury high-rises: often 65-72% due to larger common facilities.

Why This Matters for Buyers

• RERA now mandates carpet area disclosure, making comparisons more transparent.
• A lower ratio means you pay for more shared space than private space.
• Comparing ratios across projects helps assess true value for money.

In short, always compare projects using the RERA-mandated carpet area rather than built-up figures, since the ratio directly affects how much usable space you actually get for your money.