Archive · 4 Sep 2026
MMRC Approval Required for Metro 3 Construction Within 50-Metre Zone
The Mumbai Metro Rail Corporation has created a safety zone around Metro 3.
Anyone building or rebuilding within 50 metres of the metro route must first obtain permission from MMRC.
This applies to homes, housing societies and other property projects.
It also covers digging, demolishing buildings, drilling wells and laying infrastructure.
Some Metro 3 tunnels run beneath properties at depths of about 17 to 25 metres.
MMRC says unsafe work could damage the tunnels or other metro structures.
It also wants builders to protect pedestrians and commuters from falling equipment or collapsing scaffolding.
Projects that already have an MMRC clearance must follow the new safety conditions too.
The authority warned that failing to comply could have legal consequences.
The Mumbai Metro Rail Corporation now requires prior approval for redevelopment or construction within 50 metres of the Mumbai Metro Line 3 alignment.
The rule applies to property owners, landlords, housing societies, associations and other project proponents.
Covered activities include construction, demolition, excavation, geotechnical investigations, tubewells, wells and infrastructure installation.
The requirement also applies to projects that already hold an MMRC No Objection Certificate, with the conditions treated as part of the undertaking.
MMRC cited risks to underground tunnels, metro structures, pedestrians and commuters, warning that violations could lead to legal consequences.
- Who
- The Mumbai Metro Rail Corporation, property owners, housing societies and other project proponents.
- What
- Prior MMRC approval is mandatory for redevelopment and specified construction activities within a 50-metre zone on either side of the Mumbai Metro Line 3 alignment.
- When
- The requirement was announced in a public notice issued this week.
- Where
- Along the Mumbai Metro Line 3 alignment in Mumbai and its suburbs.
- Why
- To protect underground tunnels and other metro structures and reduce risks to residents, pedestrians and commuters.
- Approval zone
- Within 50 metres on either side of the Mumbai Metro Line 3 alignment.
- Authority
- Mumbai Metro Rail Corporation.
- Covered activities
- Construction, redevelopment, demolition, excavation, geotechnical investigations, tubewells, wells and infrastructure laying.
- Tunnel dimensions
- Each of the two tunnels is approximately 6.35 metres in diameter, with about 20–22 metres between them.
- Tunnel depth
- The tunnels pass approximately 17–25 metres below ground beneath certain properties.
- Existing approvals
- Projects with an MMRC No Objection Certificate must also comply with the safety conditions.
- Redevelopment activity
- A JLL report cited more than 1,000 redevelopment projects launched in Mumbai during the six years from 2020.
- Enforcement
- MMRC warned that failure to comply would result in legal consequences.