Keystone Realtors Pays ₹143 Crore for FSI Rights to Grow Its Versova Project

In a city where developable land is one of the rarest commodities available, Mumbai's developers have learned to buy construction potential rather than land itself. Keystone Realtors, the company behind the Rustomjee brand, has done exactly that. The developer paid Rs 143.45 crore to acquire 8,800.74 square metres of Floor Space Index from Parth Construction, a transaction registered on June 16 and 17, 2026. The acquired rights will be folded into its ongoing Versova redevelopment project on JP Road in Andheri West, increasing the total buildable area of the site without the developer having to purchase a single additional square yard of land.

The deal involves a specific type of construction entitlement called fungible FSI. This surplus building potential was generated by Parth Construction's slum rehabilitation project at Village Majas in Jogeshwari East. Under Mumbai's Development Control and Promotion Regulations, 2034, FSI generated from SRA schemes can be sold to other developers and applied to eligible projects elsewhere in the city. This mechanism is called FSI clubbing.

Keystone will apply these rights to its project at CTS No. 1176 (Part), Survey No. 121/5 in Village Versova. The transaction also covers 24 car parking spaces. Stamp duty of Rs 8.61 crore was paid at registration.

The government's assessed market value for this FSI was approximately Rs 55.54 crore. Keystone paid Rs 143.45 crore. That is nearly three times the official benchmark, and the premium is not an accident. It reflects how tightly supply is constrained in Andheri West real estate and how much value a developer can unlock by increasing the saleable area of a project in a location where buyers are actively paying Rs 35,000 to Rs 50,000 per sq ft for new residential inventory.

For every additional square metre of construction rights acquired, the developer gains considerably more in eventual sale proceeds than the cost of acquiring those rights. The math runs decisively in favour of the premium paid.

Understanding FSI clubbing is useful for any buyer evaluating a Mumbai project. When a developer expands its project using purchased FSI from another source, it can add towers, floors or units to an approved scheme. The saleable area grows, which means more units can be launched, typically at market rates that reflect the underlying location rather than the cost of the additional FSI. For buyers in the Versova redevelopment project, the expansion means the project will be larger and potentially better capitalised than what was originally sanctioned.

This transaction fits neatly into a pattern of aggressive pipeline building by Keystone Realtors over the past twelve months. In the June quarter of FY2025-26, the company secured three major Mumbai redevelopment projects with a combined gross development value exceeding Rs 7,700 crore. Earlier in 2026, it locked in a Rs 1,775 crore redevelopment deal covering eight housing societies in Andheri. The company has guided pre-sales of approximately Rs 5,000 crore for FY27 and expects to add Rs 8,000 crore in new project launches during the same year.

Paying a premium for FSI rather than waiting for new land parcels is entirely consistent with that pace. It accelerates the Versova project's timeline and scale without the multi-year process that a fresh land acquisition would demand.

Keystone Realtors paid Rs 143.45 crore for 8,800.74 sq m of FSI sourced from an SRA project in Jogeshwari East, which will be clubbed into its Versova redevelopment scheme in Andheri West. The consideration is nearly three times the government's assessed value, reflecting the premium that transferable development rights command in Mumbai's land-constrained western suburbs. With stamp duty of Rs 8.61 crore paid and 24 parking spaces included, the deal gives Rustomjee Versova considerably more construction headroom while avoiding a fresh land acquisition entirely.