Tamil Nadu's 2026-2027 state budget has brought a major announcement for the Poonamallee corridor — the state government is formally seeking Central approval for a 27.9 km metro extension from Poonamallee to Sunguvarchatram via Sriperumbudur, covering 14 elevated stations. Finance Minister Marie Wilson made the announcement while presenting the budget, framing it as part of a broader push to extend Chennai Metro's reach well beyond its current footprint.

The Poonamallee-Sunguvarchatram corridor is the first phase of a longer 52.94 km line originally conceived to connect Poonamallee all the way to Parandur — a route that had been planned partly to serve the now-shelved greenfield airport. With the Parandur airport project officially dropped, CMRL officials have been clear that the Poonamallee-Sunguvarchatram section will proceed regardless, and that the Parandur extension will simply be taken up later as a separate decision. The first phase alone is estimated to cost ₹8,779 crore, within a total projected outlay of ₹15,906 crore for the full Poonamallee-Parandur line.

This announcement comes at a moment when Poonamallee is already on the cusp of becoming a metro-connected locality. The 14.64 km Poonamallee Bypass-Vadapalani stretch — part of Chennai Metro Phase 2's 118.9 km, ₹63,246 crore project — has completed all mandatory safety clearances and is currently awaiting an inauguration date from the Centre. That stretch, with 11 elevated stations, is expected to open shortly, giving Poonamallee its first direct metro link to Vadapalani and onward into the city's core network.

Beyond Poonamallee, the budget also seeks Central approval for two other extension corridors: a 15.46 km Chennai Airport-Kilambakkam line estimated at ₹9,335 crore, aimed at improving southern suburban connectivity, and a 21.76 km Koyambedu-Pattabiram line at ₹9,928 crore targeting the city's western suburbs. The state is additionally pursuing a cross-border metro link between Hosur in Krishnagiri and Bommasandra in Karnataka in coordination with both the Centre and the Karnataka government.

MS Homes Take

For buyers and investors tracking the Poonamallee belt, this budget announcement is one of the most significant infrastructure signals to come out of the western corridor in recent memory. Poonamallee is already on the verge of getting its first metro connection through the Poonamallee Bypass-Vadapalani stretch — and now, with the state formally seeking approval for a further extension to Sunguvarchatram via Sriperumbudur, the entire stretch from Poonamallee outward is being set up as a metro-connected growth corridor.

What makes this particularly compelling for property buyers is the combination of near-term and medium-term upside. The Poonamallee Bypass-Vadapalani line opening shortly is the immediate catalyst — direct metro access to Vadapalani and the broader Chennai network is a concrete, near-term connectivity upgrade that tends to reflect meaningfully in residential demand. The Sunguvarchatram extension, once approved and built, extends that story further outward, effectively bringing Sriperumbudur-adjacent localities into metro reach for the first time.

The state's confidence in pursuing the Poonamallee-Sunguvarchatram corridor even after the Parandur airport was shelved is itself a strong signal — it says this route has standalone merit independent of any single anchor project. For MS Homes clients evaluating plots or residential land in and around the Poonamallee-Sriperumbudur belt, the infrastructure pipeline here is as strong and government-backed as it gets. Early movers in metro-adjacent corridors have historically seen the most significant appreciation — and Poonamallee is firmly in that position today.

Source : The Times of India