Monte South Tower D

Monte South Tower D: An Upcoming Residential Tower in Byculla

Monte South Tower D is the still-unlaunched residential tower within Monte South, a 12.5-acre mixed-use development on the former Khatau Mills compound near Y Bridge in Byculla West, Mumbai. Marathon is the developer, and the project is at the Upcoming stage, with management planning its launch for FY29. The sister towers A to C are already selling, and the wider development's apartments are positioned as spacious homes ranging from 2 to 3.5 BHK. Tower D is also searched as Monte South Byculla.

About Monte South Tower D

Monte South occupies one of the last large freehold mill land parcels left in South Mumbai, a site of roughly 12.5 acres that has been waiting for redevelopment for years. Across the whole development, about 25 lakh square feet of mixed-use area is planned, combining four residential towers of 64 storeys each with one commercial tower. Tower D is one of those four residential towers, and it sits alongside Towers A, B and C, two of which are already moving toward completion. Monte South is being developed in partnership with Adani Realty, which holds a 60 per cent interest. Marathon's board approved buying that stake for about Rs 335 crore on 31 October 2026, which would lift Marathon's share in the development from 40 to 100 per cent once the deal completes.

What sets the project apart is the scale of the land and the combination of residential and commercial space on one contiguous site, a rarity in a neighbourhood where most plots are small and fragmented. Facts as on November 2026, from the developer.

Key Highlights

• A freehold parcel of about 12.5 acres on the former Khatau Mills site, one of the largest surviving land holdings in South Mumbai.
• About 25 lakh square feet of planned mixed-use area across the wider development, including four 64-storey residential towers and one commercial tower.
• Tower D is one of four residential towers, and about 12 lakh square feet covering Tower D and the commercial tower remains to be sold.
• Roughly 1,800 apartments are planned across Monte South, of which about 800 had been sold by the November 2026 quarterly update.
• Management's estimated gross development value for Tower D stands at Rs 1,800 crore, with launch planned for FY29.
• Tower A has received its full occupation certificate, Tower B holds one up to its 45th floor, and Tower C's structure is complete up to the 35th floor as of October 2026.
• Sister towers A to C offer 2 to 3.5 BHK layouts, and the development lists a clubhouse, gymnasium and infinity-edge swimming pool as shared amenities.

Location Advantages

Byculla has long been one of the older residential neighbourhoods of central Mumbai, shaped by its textile-mill past and its dense mix of chawls, redeveloped towers and institutional buildings. Monte South's address near Y Bridge places it on the seam between Byculla and the commercial core of the island city. The development sits next to the Byculla Fire Brigade and within reach of the Byculla railway station on the Central Railway suburban corridor. The developer describes the site as close to SoBo and to major transport lines, though it is not directly on Metro Line 3; the nearest stations on that line, Mahalaxmi and Lower Parel, are cited as the practical connections.

The real question for a buyer is how much the Y-bridge rebuild will change the daily commute. The old structure is being replaced by a 916-metre, four-lane cable-stayed bridge costing Rs 287 crore, with completion targeted for December 2026. Once it opens, travel from CSMT to Byculla is expected to fall to under 10 minutes from the present 30 to 45 minutes. Buyers should treat that as a projection, since construction timelines in central Mumbai have a habit of stretching, and the surrounding roads will carry heavy construction traffic while the wider development is built.

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What's Nearby

• Byculla Fire Brigade: adjacent to the site.
• Byculla railway station (Central Railway): nearby on the main suburban line.
• Mahalaxmi metro station (Metro Line 3): the proximity is cited by the developer.
• Lower Parel: the nearest Metro Line 3 station on the other side, and a major office cluster in its own right.

Amenities

The amenities listed for Monte South include a luxurious clubhouse, a fully equipped gymnasium and an infinity-edge swimming pool. Management has also cited a swimming pool on the 65th floor of Tower A as part of the premium offering. These are presented as features of the wider development, so buyers should confirm which of them are built into Tower D specifically when the project is launched. Amenity expectations in South Mumbai are shaped by the luxury towers of Worli and Lower Parel, where podium-level clubs and sky pools have become standard, and Monte South's offering is pitched against that benchmark.

Upcoming Infrastructure

• Byculla Y-Bridge (cable-stayed): Rs 287 crore, 916 metres long, under construction and targeted for December 2026. It will cut the CSMT to Byculla trip sharply once open.
• Wadala to CSMT Metro 11: an underground line of about 16 km at an estimated Rs 160 billion, with its path rerouted to include Byculla. It is expected to become operational around 2030 once construction starts.
• Underground Byculla suburban station: a feasibility study with PADECO was launched in 2026 to convert the Central Railway Byculla station underground, though the final alignment is still open.

Together, these projects would give Monte South access to the island's main rail spines and a faster route into the business districts, which is the chief reason the locality's rental demand has held up.

Price and Configuration

Management's estimate for the whole Monte South development is about Rs 40,000 per square foot, as of November 2026. That is a project-wide average value, not a list price for Tower D, and buyers should not read it as the figure they will pay for a particular flat. Against it, the average apartment rate in Byculla was about Rs 47,150 per square foot on a carpet-area basis between April and June 2026. The two figures are not strictly like for like, since one is an estimate across an entire development and the other is an area average, but they show that the project's pricing is expected to sit below the locality's typical level. Over five years, Byculla prices have risen by roughly 12.3 per cent, and current market data puts the rise over the past year at around 19 per cent.

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Launch and Possession Timeline

• 31 October 2026: the board of Marathon approved the acquisition of Adani Group's 60 per cent stake in Monte South for about Rs 335 crore.
• 4 November 2026: Rs 200 crore of the consideration had been paid, with completion expected in the same quarter.
• November 2026: about 800 of the planned 1,800 apartments had been sold, with Q2 FY27 sales of about Rs 146 crore, including the rainy season.
• FY28: planned launch of the commercial component, at an estimated Rs 3,400 crore.
• FY29: planned launch of Tower D, at an estimated gross development value of Rs 1,800 crore. Management has said the timing depends on approvals, land conversion and planning rather than a set quarter.

Investment Analysis

• Entry point: the project-wide estimate of about Rs 40,000 per square foot sits below Byculla's average carpet rate of about Rs 47,150, which may give early buyers some room, provided the final Tower D pricing follows the same logic.
• Appreciation: Byculla prices rose about 12.3 per cent over five years and roughly 19 per cent over the last year, according to current market data.
• Rental yield: the locality's average gross yield stands at about 4 per cent in 2026, a reasonable return for South Mumbai.
• Demand drivers: the Y-bridge rebuild, the proposed Metro 11 and the possible underground Byculla station would each shorten commutes or add rail options, supporting steady tenant interest.
• Competition: the South Mumbai luxury segment is crowded, and large projects in the area often face long execution timelines, which is the main risk for a buyer committing years ahead of possession.

Pros and Cons

Pros

• A rare contiguous freehold site of about 12.5 acres in a central, well-connected pocket of Mumbai.
• A strong delivery sign from the same development, with Tower A fully occupied-certified and Towers B and C progressing.
• Backing from a listed developer that reports net debt-free status as of 30 September 2026.
• Infrastructure in the pipeline, including the Y-bridge, Metro 11 and a possible underground station.

Cons

• Tower D has not been launched, and its FY29 timing depends on approvals, land conversion and planning.
• The developer is still completing a buyout of its partner's 60 per cent stake, so the ownership structure is in transition.
• The project is not directly on Metro Line 3, and the nearest stations are a walk or a short ride away.
• Construction in a dense neighbourhood brings dust, noise and traffic, and the wider development will take years to complete.

Who Should Buy This

Ideal for: long-horizon end-user families who want a spacious home in central Mumbai and can wait for possession, and investors comfortable with a multi-year wait who value the locality's rental demand. Buyers who need a home within a year should look at ready inventory instead.

Not ideal for: buyers with a short timeline or a strict budget that depends on final Tower D pricing, which has yet to be set.

About the Developer

Marathon was founded in 1969 by Ramniklal Zaverbhai Shah, and the Marathon Group has completed more than 100 projects in Mumbai. Its listed arm, Marathon Nextgen Realty, operates across Lower Parel, Byculla, Mulund, Bhandup, Thane, Dombivli and Panvel, with over 2.2 million square feet under construction. Notable delivered projects include Neosquare in Bhandup, which has received its occupation certificate, and Futurex in Lower Parel, which has an occupation certificate up to the 37th floor. For FY26 the company reported revenue of Rs 639 crore and profit after tax of Rs 206 crore. Its timely-delivery record is described by the company itself, so buyers should weigh that claim with their own checks.

Frequently Asked Questions

Q: Is Monte South Tower D already available for booking?

A: Tower D is at the Upcoming stage, and management plans to launch it in FY29, with an estimated gross development value of Rs 1,800 crore.

Q: Where exactly is Monte South Tower D located?

A: It stands on the former Khatau Mills compound near Y Bridge, next to the Byculla Fire Brigade in Byculla West, Mumbai 400008.

Q: Who is developing Monte South Tower D?

A: Marathon is the developer, and it is buying out the 60 per cent interest held by Adani Group to take full ownership of Monte South.

Q: How far is Monte South Tower D from the nearest metro?

A: The project is not directly on Metro Line 3, and the developer cites the Mahalaxmi and Lower Parel stations as the nearest connections, with Byculla railway station close by.

Q: Is Byculla a good place to invest in property?

A: Byculla offers average rental yields of about 4 per cent and five-year price growth of around 12.3 per cent, according to current market data as of 2026, supported by planned transport upgrades.

Related News

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• Marathon's Rs 335 Crore Monte South Buyout Reshapes Byculla Supply Outlook