Rustomjee GTB Nagar: reimagining Sion Koliwada's Koliwada colony for a new generation
1, 2 & 3 BHK · Price on Request
Rustomjee GTB Nagar is the developer's redevelopment of a colony first built in 1958 for families displaced after Partition, now being rebuilt in partnership with the Maharashtra Housing and Area Development Authority. The Rustomjee Group, operating as Keystone Realtors Limited, has been appointed the Construction and Development Agency for the site, with the tripartite development agreement executed between MHADA, the housing societies and the developer.
For the more than 1,400 families who called this Sion Koliwada colony home, the project promises a return to a familiar address, rebuilt with contemporary planning. For future residents joining through the free-sale component, it offers a rare opportunity to own a home in a part of central Mumbai that has largely been built out, surrounded by decades-old institutions, markets and transit links rather than newly zoned land.
The redevelopment falls under Maharashtra's cluster redevelopment regulation for cessed and dilapidated buildings, a framework designed to replace ageing, structurally unsafe stock with modern towers while keeping existing communities intact. Three residential towers are envisaged on the site, planned with the kind of scale that this regulation allows once rehabilitation obligations to existing residents are met.
The timing follows a formal government process: Cabinet approval for the redevelopment framework, MHADA's designation as Special Planning Authority for the site, and finally the Letter of Acceptance and tripartite agreements that move the project from policy to execution. For Rustomjee, GTB Nagar extends a redevelopment track record already visible in projects like Seasons at BKC Annexe, into one of Mumbai's largest cluster redevelopment efforts.
Rustomjee GTB Nagar in Sion Koliwada is being built as a long-term address for both the community it is rehousing and the buyers it will welcome. Details on the free-sale residences will follow as the project moves toward launch.
| Configuration | Size | Starting Price |
|---|---|---|
| 1 BHK Planned as part of the free-sale component of the GTB Nagar redevelopment | On request | |
| 2 BHK Planned as part of the free-sale component of the GTB Nagar redevelopment | On request | |
| 3 BHK Planned as part of the free-sale component of the GTB Nagar redevelopment | On request |




Detailed master plan and unit-wise floor plans available on request.
Sion Koliwada, Sion East, Mumbai · Mumbai
GTB Nagar, or Guru Tegh Bahadur Nagar, sits in Sion East in the heart of central Mumbai, a locality that traces its roots to a fishing settlement before becoming, in the years after Partition, a resettlement colony for Sikh, Punjabi and Sindhi refugee families. The area today carries that layered history alongside dense civic infrastructure, with the GTB Nagar railway station on the Harbour Line and the Mumbai Monorail Line 1 station nearby boosting suburban and regional connectivity . It remains bordered by well-known central Mumbai addresses including Antop Hill, Dharavi, Matunga and Kings Circle.
For a redevelopment address, GTB Nagar's specific value lies in its centrality: the location allows travel through much of Mumbai in comparatively little time, being close to CSMT and roughly 5 km from Bandra . The site sits near the Eastern and Western Express Highways, and business hubs such as BKC, Lower Parel, Andheri and Fort remain accessible , making the address relevant to working professionals seeking a well-connected, established part of the city rather than a peripheral suburb.
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The upcoming Metro corridor through Wadala is expected to improve east-west connectivity for the Sion-GTB Nagar belt, reducing dependence on road transport for cross-city commutes.
The existing GTB Nagar railway station and nearby Monorail Line 1 station already anchor the locality's public transport network, with continued upgrades expected as ridership grows.
Ongoing improvements along the Eastern Express Highway corridor, which runs close to Sion Koliwada, are aimed at easing north-south traffic between South Mumbai and the eastern suburbs.
The large-scale redevelopment planned for neighbouring Dharavi is expected to bring new infrastructure and civic investment to the wider Sion-Matunga-Dharavi belt over the coming years.
The SCLR corridor continues to ease east-west movement across central Mumbai, benefiting localities such as Sion Koliwada that sit along its extended catchment.
The project is being executed under a formal tripartite agreement between MHADA, the existing housing societies and Rustomjee, following Cabinet-level policy approval, giving the redevelopment institutional oversight uncommon in private cluster projects.
At 11.19 acres, this is one of the largest contiguous redevelopment sites in central Mumbai, a scale rarely available in an already dense, built-up part of the city.
Rustomjee has been active in Mumbai real estate since 1995, having delivered over 230 buildings housing more than 17,000 families, and brings prior redevelopment experience from projects such as Seasons in BKC Annexe.
GTB Nagar is served by its own Harbour Line railway station and a nearby Monorail stop, and sits close to both the Eastern and Western Express Highways, keeping the address well linked to the rest of Mumbai.
As MHADA's first redevelopment project on private land through the Construction and Development Agency model, GTB Nagar is being watched closely as a precedent for future cluster redevelopment in the city.
The site carries the layered history of a Koli fishing settlement turned post-Partition refugee colony, giving the redeveloped address a sense of continuity and community rarely found in newly built developments.
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