Surat Diamond Bourse

The Surat Diamond Bourse in Gujarat is the world’s largest office building, surpassing the Pentagon with a built-up area of 7.1 million square feet. Spread across thirty-six acres, it accommodates sixty-seven thousand professionals and up to seventy thousand daily users, consolidating the global hub of diamond cutting, polishing and trading under one roof. Beyond its scale, the project redefines density by placing human experience, sustainability and community at its core.

The design responds to the daily realities of Surat’s diamond workforce, many of whom previously travelled long distances to Mumbai. Circulation was reverse engineered from the user journey, mapping every step from site entry to workstation. Decentralised vertical cores, shaded courtyards and a linear circulation spine ensure that no internal journey exceeds seven minutes. Conceived as a city within a city, the complex houses four thousand seven hundred offices, a ten thousand square metre food zone, retail and wellness facilities, and landscaped courts that support informal trading, community lunches and year-round recreation.

Environmental performance drives the architectural strategy. The nine office blocks are oriented north–south, enabling seventy-five percent of workspaces to receive natural daylight. Thirty percent of the built area, including circulation and community spaces, is passively cooled and ventilated. A radiant cooling system circulates chilled water through structural slabs, using thermal mass to reduce energy demand. Consuming significantly less energy than conventional HVAC systems, this approach, combined with passive shading and biophilic design, reduces overall energy consumption by fifty percent and has earned the project an IGBC Platinum rating.

Constructed using locally sourced materials such as Lakha red granite and Gwalior white sandstone, the Bourse engages regional craft communities and minimises waste. Designed as a cooperative, it balances large institutional needs with individual livelihoods, demonstrating that even at seven million square feet, architecture can remain humane, walkable and deeply community driven.