Carpet Area, Built-Up Area, Super Area: What You Are Actually Paying For
Two apartments quoted at the same rate per square foot can differ in usable space by 20% or more, purely because of how area is defined. This guide explains the three measurements every buyer must reconcile before comparing price.
Typical loading over carpet area
25–35%
RERA mandate to disclose carpet area
100%
Year RERA standardised carpet-area disclosure
2016
Loading variance between builders
10–15%
What the data says
Carpet area is the actual usable floor space within the walls, and is the only figure RERA requires builders to quote as the primary measure.
Built-up area adds wall thickness and balconies to carpet area, typically 10–20% higher, and is used internally by builders for construction costing.
Super built-up area adds a proportionate share of common areas such as lobbies, stairwells and clubhouse, and is what most price-per-square-foot quotes are actually based on.
Two projects with an identical super area rate can differ meaningfully in real livable space if their loading factors are different, so comparing on carpet-area rate is more reliable.
How EstateVeda executes this
Independent recalculation of every quoted price on a carpet-area basis before comparison.
Cross-verification of the loading factor against the RERA-filed project documents.
Flagging any project where the loading factor exceeds the corridor norm without justification.
Providing buyers a like-for-like comparison sheet across shortlisted projects.
Risks we underwrite against
Comparing projects purely on super-area rate without adjusting for loading factor.
Builders quoting balcony and utility areas inconsistently across floor plans.
EstateVeda verdict
Always convert every price quote to a carpet-area rate before comparing projects — it is the only apples-to-apples number available.
Frequently asked questions
What is the difference between carpet area and super built-up area?
Carpet area is the usable floor space inside the walls. Super built-up area adds walls, balconies and a share of common amenities like lobbies and clubhouse, and is typically 25–35% larger than carpet area.
Does RERA require builders to disclose carpet area?
Yes. Since RERA, builders must quote and sell on a carpet-area basis, though super-area rates are still commonly used in marketing and should be converted for comparison.
Why do two projects with the same rate per square foot feel different in size?
Their loading factors likely differ — one project may load 25% over carpet area while another loads 35%, meaning the actual usable space differs even at an identical quoted rate.