Metro Phase 3A: Sarjapur–Hebbal Corridor Route & Real Status

Quick answer

Phase 3A is a proposed metro corridor of roughly 37 km linking Sarjapur to Hebbal through Agara, Koramangala and the central area. It has state-level approval in principle but no committed construction timeline, so treat it as planning-stage upside rather than a delivered asset.

Introduction

Sarjapur Road is the clearest case in Bengaluru of housing supply outrunning transport. Thousands of apartments have come up along a road that still narrows in places, with no rail option at all. Phase 3A is meant to fix that: a long diagonal corridor from Sarjapur through Koramangala and the centre up to Hebbal.

If built, it would be the most valuable corridor for the south-east. The honest position today is that it is approved in principle and still at the planning and funding stage — and that should change how you use it in a buying decision.

Key takeaways

Proposed length: About 37 km
Route: Sarjapur to Hebbal via Koramangala
Status: Approved in principle; planning stage
Authority: BMRCL
Construction start: Not committed
Guidance: Treat as upside, do not pay a premium

Project status

Planned

Status reflects the latest publicly available information from the implementing authority. Proposed and approved stages are not the same as construction or operation — PropertyVest does not present a proposal as confirmed.

Quick facts

Key facts about Bangalore Metro Phase 3A
Project	Bangalore Metro Phase 3A
Type	Metro rail
Location	Sarjapur to Hebbal
Approx. length	About 37 km (proposed)
Corridors	Phase 3A (proposed)
Stations	Not publicly confirmed
Current status	Planned
Authority	BMRCL
Expected timeline	Not publicly confirmed
Last updated	5 October 2026

What is Bangalore Metro Phase 3A?

Phase 3A is planned as a roughly 37 km corridor from Sarjapur to Hebbal, via Agara, Koramangala, Dairy Circle, Shivaji Nagar and Nagawara. Central sections would likely be underground — slower and costlier to build.

What "approved in principle" means

A corridor passes through feasibility, detailed project report, state approval, central sanction, funding, tendering and land acquisition before construction. Phase 3A has cleared early gates only. Until land acquisition and civil tenders are visible, no honest timeline exists.

Why it is needed

Sarjapur Road has large residential density and no rail.
It would link the Sarjapur–Wipro belt with Manyata and the north through the centre.
It complements the ring-shaped Blue and Orange lines.

How to treat it as a buyer

Use it as a tie-breaker only. Buy Sarjapur Road for jobs, schools and social infrastructure; if the metro comes, it is a bonus.

Route & coverage

Proposed: Sarjapur → Dommasandra → Carmelaram → Kodathi → Agara → Ibbaluru → Koramangala → Dairy Circle → Shivaji Nagar → Nagawara → Hebbal. Alignment can change.

Stations, junctions & corridors

Station / junction	Locality	Corridor	Notes
Sarjapur	Sarjapur	Phase 3A (proposed)	Southern terminus
Carmelaram	Carmelaram	Phase 3A (proposed)	Possible suburban rail interchange
Agara	Agara	Phase 3A (proposed)	Blue Line interchange potential
Koramangala	Koramangala	Phase 3A (proposed)	High-value catchment
Hebbal	Hebbal	Phase 3A (proposed)	Northern terminus

Timeline

2023–2024
Corridor cleared in principle at state level
Reported
Pending
DPR, central sanction and funding
Pending
Pending
Land acquisition and tenders
Pending
Not confirmed
Construction and commissioning
Not confirmed

Timelines for large infrastructure projects change. Entries labelled expected or reported are not guaranteed completion dates.

Real estate impact

Property prices

Sarjapur Road prices rose on employment and schooling, with metro expectation layered on top. Compare rates against Whitefield and HSR Layout on fundamentals and leave the corridor out of your number.

Rental market

Rental demand is already strong due to nearby tech parks; the constraint is commute time. Rents would respond only near an actual opening.

Infrastructure may support prices, rentals and liquidity, but outcomes depend on delivery timelines, supply and broader market conditions. PropertyVest does not guarantee appreciation or returns.

Property price & rental context

Price and rent context for this corridor is published with the date of the data it is based on.

Localities connected to Bangalore Metro Phase 3A

Projects in areas connected to this infrastructure

No PropertyVest-verified projects are currently mapped to this corridor.

Investment outlook

Buy for what exists now with a 7–10 year horizon. Re-evaluate if tenders and land acquisition start — that is when corridor-adjacent stock historically re-rates.

Potential benefits

First rail option for Sarjapur Road
Links south-east and north job belts
Complements ring-based lines
Could relieve Sarjapur Road and Koramangala traffic
Interchange potential with Blue Line and suburban rail

Risks & considerations

No committed timeline
Underground central sections are slow and costly
Alignment can still change
Sarjapur asking prices already include speculative premium
Land acquisition in Koramangala is a bottleneck

PropertyVest publishes risks alongside opportunity. Infrastructure timelines and property outcomes are not guaranteed.

Conclusion

Watch for two signals: a sanctioned DPR with funding, and visible land acquisition notices. Until then, Phase 3A belongs in the "planned" column.

Frequently asked questions

Is Metro Phase 3A approved?

Cleared in principle at state level; it still needs a sanctioned DPR, funding and tenders.

How long is it?

Roughly 37 km as proposed.

When will metro reach Sarjapur?

There is no committed date; treat years quoted in marketing as unverified.

Which areas would it serve?

Sarjapur, Dommasandra, Carmelaram, Agara, Koramangala, the central area, Nagawara and Hebbal.

Should I pay more for Sarjapur because of it?

No. Price on today's fundamentals and treat the corridor as free optionality.

Will it connect to other lines?

It is expected to interchange with the Blue Line around Agara and Hebbal, but this is planning-stage.

Sources & verification

Last verified: 3 October 2026

About PropertyVest & this article

PropertyVest is a Bangalore-focused property advisory. We track infrastructure delivery, locality pricing and project approvals across the city so buyers can compare options on facts rather than on brochure claims.

Written by: PropertyVest Research Desk
Reviewed by: PropertyVest Editorial
Published: 5 October 2026
Last updated: 5 October 2026
Facts last verified: 3 October 2026

This article is research and general information, not investment advice. Verify approvals, RERA registration and current pricing before you transact.

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