Sarjapur–Hebbal Metro (Phase 3A): status, route and the 2033 date
A plain, dated record of where the Red Line stands, what it will change for Sarjapur Road, and what it will not.
Last reviewed 15 October 2026. Every figure on this page is dated and linked to its source below.
Where Phase 3A stands today (dated log)
Phase 3A is the proposed Red Line of Namma Metro, running from Sarjapura in the south-east to Hebbal in the north. As of 15 October 2026 it has state approval but not the Union Cabinet's approval, and no civil contract for it has been awarded. Everything below is listed against the date it was reported, so you can see how each figure got there.
We keep this page because builder brochures tend to treat a proposed line as an existing one. A project sheet that says 'metro at your doorstep' about a line without central approval is describing a hope. The log tells you how far along that hope is.
| Date | Milestone | Source |
|---|---|---|
| Jun 2024 | Detailed Project Report (DPR) prepared by BMRCL | Wikipedia, citing BMRCL |
| Dec 2024 | Hebbal–Sarjapur line cleared by Karnataka's finance department | Deccan Herald |
| 10 Jan 2025 | Karnataka cabinet approves Phase 3A; sent to the Centre days later | Deccan Herald / Wikipedia |
| 2025 | Centre flags the cost (about ₹776 crore per km); BMRCL asks consultant Systra to review and trim the DPR | Wikipedia, citing press reports |
| Jul 2026 | Revised plan reported: about 37.8 km, 27 stations, about ₹25,999 crore, opening estimate April 2033 | Asianet Newsable |
| 15 Oct 2026 | No Union Cabinet approval reported; status unchanged since the revised plan | Our review of the sources below |
Route and stations: Sarjapur to Hebbal
The line starts at Sarjapura and runs north-west through Dommasandra, Kodathi, Agara, Koramangala, Dairy Circle and the central business district before climbing to Hebbal. Earlier versions of the DPR showed 28 stations over roughly 36.6 km, with an underground section through the core. The revised submission reported in July 2026 lists 27 stations over about 37.8 km.
Station names and exact positions are still DPR proposals. They can move during the central review, and the cost-cutting exercise has already changed the count once. Treat any map — including ours — as a proposal until a civil contract is awarded and the alignment is fixed on the ground.
Interchanges are planned with the Purple Line, the Pink Line and the Blue Line (ORR–Airport), which is what makes Phase 3A useful beyond the corridor itself: it would connect Sarjapur Road to the airport line and the city centre without a change of mode.
Cost, DPR revisions and the Centre's approval
Namma Metro is a 50:50 joint venture of the Government of India and the Government of Karnataka, so a new phase needs both governments. The state signed off in January 2025. The Centre's concern was price: at about ₹776 crore per km the original DPR would have been the most expensive line in the network's history, largely because of its long underground stretch.
BMRCL's response was to commission Systra to optimise the design. The revised figure reported in July 2026 is about ₹25,999 crore, against roughly ₹28,405 crore in the earlier DPR. A lower cost improves the line's chances at the Union Cabinet, but it has not yet produced an approval, and no date for one has been published.
Realistic timeline: why 2033, not 2031
The original target was 2031. The revised plan moves the opening estimate to April 2033. That date assumes central approval soon, then tendering, land acquisition and construction of a long underground section — each of which has slipped on earlier Namma Metro phases.
For a home you buy in 2026, the honest reading is this: a metro on Sarjapur Road is a 2030s event, not a possession-day event. If a project's handover is in 2028 or 2029, plan your commute on the roads, the Outer Ring Road and the existing Purple and Yellow Lines.
What it changes for Sarjapur Road and Sompura Gate homes
Once open, the line would give the inner corridor — Kodathi, Dommasandra and the stretch towards Sarjapura town — a rail link to Koramangala and the CBD that avoids the Sarjapur Road–ORR junction, the corridor's worst bottleneck. That matters most for homes within a walk or short ride of a station.
Sompura Gate sits further out on the Sarjapur–Attibele side. We do not publish a walking distance to a Phase 3A station from any of our projects, because the stations are still proposals; when the alignment is fixed we will measure it and add it here. For the wider price question, see how the metro may affect Sarjapur Road prices and the Sarjapur Road price-per-sq-ft data.
What it does not change (and how to read builder claims)
It does not change today's commute, and it does not change what you are paying for today: land, construction quality, approvals and the developer's record. A line seven years away is already partly priced into asking rates on the corridor, so 'buy before the metro' is not the bargain it sounds like.
Three checks when a brochure leans on the metro: does it name the phase and its approval status; does it give a distance to a named, proposed station rather than to 'the metro'; and does the project's own RERA registration — not the metro — carry the completion date you are relying on? You can compare corridors on these terms on Sarjapur Road vs Whitefield, and read the road-side story on the Satellite Town Ring Road page.
How we update this page
We check BMRCL, the state and Union cabinet notes and the press once a month, and whenever a milestone is reported. A new row goes into the log with its date and source; nothing is deleted, so you can see how the story moved. If you spot a newer development we have missed, tell us through the contact page and we will verify it before it goes in.
Questions buyers ask
When will the Sarjapur metro line open?
The revised plan reported in July 2026 gives an opening estimate of April 2033, two years later than the original 2031 target. It depends on Union Cabinet approval, which had not been granted as of 15 October 2026.
Which stations are on the Sarjapur–Hebbal metro line?
The revised plan lists 27 proposed stations from Sarjapura through Dommasandra, Kodathi, Agara, Koramangala, Dairy Circle and the CBD to Hebbal. Earlier DPRs listed 28. Names and positions can still change before construction.
Has the Centre approved Namma Metro Phase 3A?
No. Karnataka's cabinet approved it on 10 January 2025 and sent it to the Centre. After the Centre flagged the cost, BMRCL revised the DPR; Union Cabinet approval was still awaited as of 15 October 2026.
How far is Sompura Gate from the nearest planned Phase 3A station?
We do not quote a distance yet, because Phase 3A stations are proposals that have already changed once. When the alignment is fixed we will measure it and publish it on this page.
Should I buy on Sarjapur Road only because of the metro?
We would not. The line is a 2030s event and is partly priced in. Buy for the home, the approvals and the developer's record; treat the metro as a long-term bonus. Our price data shows what the corridor costs today.
Sources
- Red Line (Namma Metro) — Wikipedia — DPR, state approval and cost history; read 15 Oct 2026.
- Deccan Herald — Sarjapur–Hebbal line: route and stations — route and station list; read 15 Oct 2026.
- Deccan Herald — Hebbal–Sarjapur line okayed by finance department — state finance clearance.
- Asianet Newsable — Phase 3A opening pushed to 2033 — revised length, station count, cost and 2033 date (Jul 2026).
- The Metro Rail Guy — Phase 3A information and status — status tracking; read 15 Oct 2026.
- OpenCity — Phase 3A DPR documents — DPR source document.
- BMRCL — official project updates.
See the corridor for yourself
Drive the route at peak hour with us and see how our RERA-registered homes on the Sarjapur corridor work with today's roads, not a 2033 promise.