How big is a Chennai 2BHK really? The carpet-area map, corridor by corridor

By Research Desk · 21 Jul 2026 carpet-area chennai 2bhk

Every RERA registration includes a carpet-area statement: the legally declared, walls-in floor area of each unit type. It is the one size number a builder signs, and it is public. Aggregated across corridors, it draws an honest map of what "2BHK" means in Chennai today.

Median declared 2BHK carpet area by corridor, from TNRERA carpet-area statements. Minimum sample thresholds apply; thin samples flagged on locality pages.

The same "2BHK" spans 523 sq ft in Sriperumbudur to 703 sq ft in Chennai Core — a 34% spread on the identical label.

The gradient follows land economics: central corridors carry larger declared units, while affordability corridors like Sriperumbudur compress the same room count into 523 square feet. Neither is wrong — but a price-per-square-foot comparison between corridors is meaningless unless it is carpet-to-carpet.

Using this when you shop

Ask for the RERA carpet area of the exact unit, not the brochure's super built-up. Then place it against your corridor's median on our locality pages: a unit well below the corridor median at a premium price needs explaining. The declared statement for every project sits on its project page, cited to the filing.

Method & sources: figures computed from public TNRERA registration records — how we parse and score. Cite freely with a link.

How big is a Chennai 2BHK really? The carpet-area map, corridor by corridor

Using this when you shop

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