The Union Cabinet approved Phase 3 in August 2024 at an estimated cost of ₹15,611 crore. It comprises two elevated corridors: JP Nagar 4th Phase–Kempapura (32.15 km) along Outer Ring Road West, and Hosahalli–Kadabagere (12.50 km) along Magadi Road. The expansion will take Bengaluru’s active metro network to 220.20 km.

BMRCL expects construction to start in June 2026 and operations in May 2031. Around 1,100 trees are approved for relocation on the JP Nagar–Mysuru Road stretch; planning reduced the overall tree count from over 11,000 to about 6,700.

The project includes 10 multimodal hubs, bus bays, station parking, footbridge links to Lottegollahalli and Hebbal railway stations, and cycle-sharing. Projected daily ridership is 4.63 lakh on Corridor 1 and 1.75 lakh on Corridor 2.

BMRCL is reconsidering a proposed 37 km double-decker flyover, potentially scaling it down to 11 km at congestion points including Hebbal, BEL Circle, Goraguntepalya, Sumanahalli, Nagarbhavi, Nayandahalli, Kamakya Junction and Sarakki Junction.

Indicative property prices: Nagarbhavi–Sumanahalli, about ₹7,000/sq ft; Magadi Road–Kadabagere, ₹9,900–₹16,550/sq ft; Peenya–BEL–Hebbal, ₹8,000–₹18,400/sq ft; JP Nagar and southern Bengaluru apartments, ₹8,550–₹16,300/sq ft.

The government has begun identifying land in and around Harohalli for Bengaluru’s proposed second international airport, following Chief Minister DK Shivakumar’s directions. Three sites in Harohalli taluk have been shortlisted; Shivakumar cited relatively lower land prices and easier acquisition than at other locations. Officials flagged possible residential rehabilitation costs and resistance, Bannerghatta National Park constraints, land already acquired for the Satellite Town Ring Road, and a hard-rock hill that could complicate runway construction. The hill’s vegetation also needs study. The Harohalli sites are about 18 km from previously considered locations at Chudahalli and Somanahalli along Kanakapura Road. Those adjacent sites cover approximately 4,800 acres and 5,000 acres, respectively. Experts have raised concerns about construction delays as the land search continues.

Harohalli, in Chief Minister DK Shivakumar’s Kanakapura constituency, has joined the race for Bengaluru’s second international airport. At a Wednesday review meeting with Infrastructure Development Minister MB Patil and officials, Shivakumar suggested reassessing land there, citing lower prices and easier acquisition. He said the site should have affordable land, manageable terrain and minimal displacement; entire villages should not be relocated, though standalone houses could be compensated. The other contenders are Nelamangala, Kunigal, Somanahalli and Chudahalli. Somanahalli and Chudahalli span roughly 4,800 and 5,000 acres, respectively, and could be combined. An AAI team inspected the original sites in April 2025; a November report flagged terrain and airspace concerns. A Meinhardt-Singapore technical consultancy and KPMG feasibility and financial assessment is expected by mid-September. The state proposal will then go to the Airports Authority of India for approval. A proposed 24km Green Line extension from Silk Institute to Harohalli and the Satellite Town Ring Road’s southern arc linking Anekal and Kanakapura could improve connectivity. Land prices along Kanakapura Road reportedly doubled in six to eight months.

Karnataka is evaluating Choodahalli and Somanahalli on Kanakapura Road, and a third site near Nelamangala, for Bengaluru’s second international airport. A Singapore-based consultancy has a ₹4.95 crore contract for a technical and economic feasibility study; the report is expected within three months. Consultations with the Infrastructure Development Department have begun. The study will assess technical feasibility, passenger convenience, connectivity, cargo demand, infrastructure support and economic viability. The government plans to proceed with land acquisition and other formalities based on its findings.

The proposed sites cover 4,300–4,700 acres. South Bengaluru, particularly Kanakapura Road, is considered a strong contender as passenger and cargo demand grows. Planners say an airport in the south could balance urban development and ease pressure on Kempegowda International Airport in Devanahalli, in North Bengaluru. Possible ownership restructuring of the NICE corridor project and a proposed ₹18,000 crore high-tech township near Bidadi are also strengthening the case for the southern corridor. All three sites face geographical and environmental challenges; the terrain is uneven and may require large-scale levelling.

Kempegowda International Airport (KIA) remained India’s third-busiest airport in 2025. Projected to handle 80–90 million passengers by the end of the decade, it is expected to run out of capacity in the early 2030s.

In April, an Airports Authority of India team inspected three sites at Choodahalli and Somanahalli on Kanakapura Road, and another on Nelamangala-Kunigal Road. After submitting its assessment, the team’s report led the State government to invite tenders for a consultancy to prepare a location-suitability assessment and comprehensive technical and financial feasibility report. Legislators suggested Sira in Tumakuru district, but the government said a greenfield international airport there was not viable.

Work continued on the 463-acre Bengaluru Airport City, planned to include business parks, a global innovation hub, education and health district, retail dining entertainment village, concert arena, convention and exhibition centre, knowledge park, hospitality area, logistics park and central park. KIA added domestic and international airlines and routes. Its operator, Bangalore International Airport Limited, introduced segregated pick-up lanes; cab drivers protested the rules.