When will the Sarjapur–Hebbal metro (Red Line) open?

The revised detailed project report dates it to April 2033, two years later than the earlier 2031 target. Construction is planned to start in May 2027, subject to the Centre's approval. (As reported on 12 November 2026.)

Has the Centre approved Namma Metro Phase 3A?

Not as of 12 November 2026. The revised report was sent to the Centre in April 2026 and approval was expected by October 2026.

Sarjapur–Hebbal metro (Red Line): April 2033, Centre's nod awaited

The Sarjapur–Hebbal metro is now dated April 2033, and still has no central approval

Namma Metro's Phase 3A, the Red Line from Sarjapur Road to Hebbal through the city centre, is dated April 2033 in its revised detailed project report. The earlier date was 2031. The Centre's approval, which was expected in October, has not been given, and civil work cannot start without it.

The record so far

When	What happened
December 2024	The state cabinet clears the line: 36.59 km, ₹28,405 crore, with 2031 as the target
2025	The Centre flags the cost; BMRCL orders a review
February 2026	Revised report: 37.8 km, ₹25,999 crore, April 2033
April 2026	Sent to the Centre, with approval expected by October
November 2026	Approval still awaited

The revision also shortened the underground section, from 14.44 km to 14.28 km, and dropped one station. BMRCL's plan now targets the start of construction in May 2027, if the approval comes in time.

What it means along the corridor

Sarjapur Road has been marketed on this line for several years. Today it is a line with no central approval and an opening date six and a half years away. For developers launching on the corridor, and for capital partners underwriting projects there, absorption and pricing that assume the Red Line carry two risks: the approval, and then the build. The ORR metro, which crosses the corridor at the Outer Ring Road, is the nearer date, now due in mid-2027.

In brief

When will the Sarjapur–Hebbal metro (Red Line) open?: The revised detailed project report dates it to April 2033, two years later than the earlier 2031 target. Construction is planned to start in May 2027, subject to the Centre's approval. (As reported on 12 November 2026.)
Has the Centre approved Namma Metro Phase 3A?: Not as of 12 November 2026. The revised report was sent to the Centre in April 2026 and approval was expected by October 2026.