Mumbai Air Funnel Zones
AAI
Overview
Mumbai airport funnel zone restrictions are among the most consequential in India. The color coded zoning map for Mumbai and Navi Mumbai, published by AAI under GSR 751(E), 2015 and updated in June 2016, governs permissible building height across a 20 km radius of Chhatrapati Shivaji Maharaj International Airport. The airport sits in Vile Parle East at 14 m AMSL and operates two intersecting runways: the primary runway 09/27 (3,445 m) and the secondary runway 14/32 (2,871 m). At 4 km from the airport, buildings above just 17.87 m require AAI approval, the lowest threshold of any major Indian city.
Why Mumbai's CCZM Bites Harder Than Any Other Indian City's
Mumbai is the sharpest example of what happens when an airport is embedded inside a dense urban core. The funnel zone has been in place since 1928, virtually covering 50% of suburban Mumbai, including Vile Parle, Andheri, Kurla, and Santacruz. In Navi Mumbai, 65% of the area, including Ulwe, Chinchpada, Khandeshwar, and Mansarovar, falls inside the funnel zone of the upcoming Navi Mumbai International Airport (IATA: NMI), which commenced commercial operations on 25 December 2025.
Overview
Approach / Funnel Surface
Distance from CSIA Runway
Along runway 09/27 axis, up to ~9 km
Mumbai Height Threshold
2% of distance from runway edge
AAI NOC Required?
Mandatory in all cases
Inner Horizontal Surface
Distance from CSIA Runway
Within ~4 km of runway ends
Mumbai Height Threshold
17.87 m (approx. 5–6 floors)
AAI NOC Required?
Yes, above this threshold
Conical Surface
Distance from CSIA Runway
4–15 km from ARP
Mumbai Height Threshold
Rises gradually; varies by grid
AAI NOC Required?
Depends on CCZM grid colour
Outer Zone
Distance from CSIA Runway
15–20 km from ARP
Mumbai Height Threshold
More permissive; local MCGM bylaws
AAI NOC Required?
Required only if building exceeds CCZM PTE
Zone Type
Distance from CSIA Runway
Mumbai Height Threshold
AAI NOC Required?
Approach / Funnel Surface
Along runway 09/27 axis, up to ~9 km
2% of distance from runway edge
Mandatory in all cases
Inner Horizontal Surface
Within ~4 km of runway ends
17.87 m (approx. 5–6 floors)
Yes, above this threshold
Conical Surface
4–15 km from ARP
Rises gradually; varies by grid
Depends on CCZM grid colour
Outer Zone
15–20 km from ARP
More permissive; local MCGM bylaws
Required only if building exceeds CCZM PTE
The 17.87 m threshold at 4 km is the number every buyer must carry. In Vijayawada, the same distance from the airport allows buildings up to 42.14 m before AAI approval is needed. In Mumbai, a five- to six-story building triggers a mandatory NOC. The old AAI ATC tower at CSIA itself was demolished in 2014 because it penetrated runway 14/32's transitional obstacle limitation surfaces by over 50 meters. If AAI acted against its own infrastructure for a height violation, it will act against yours. Confirm the CCZM grid color and permitted top elevation for your plot before you approach any lender or sign any agreement.
Santacruz to Ulwe: Where Mumbai's Funnel Zone Suppresses Value and Where It Creates Opportunity
Vile Parle / Santacruz
Airport Distance
0-3 km (immediate vicinity, CSIA)
Constraint Level
Very High (approach funnel)
Growth Driver
Metro Line 3 access; established residential demand
Key Risk
Height cap at ~17.87 m; redevelopment relies on TDR under DCPR-2034
Andheri / Kurla
Airport Distance
2-6 km (CSIA zone)
Constraint Level
High
Growth Driver
BKC adjacency; commercial corridor
Key Risk
AAI towers in Andheri under relocation; check individual grid before buying
Ghatkopar
Airport Distance
~8-10 km (southeast of CSIA)
Constraint Level
Moderate
Growth Driver
Metro Line 1 hub; eastern suburbs growth
Key Risk
Conical surface zone; FSI up to 2.7 but TDR may be needed for full utilisation
Ulwe / Panvel
Airport Distance
0-5 km (NMIA approach, runway 08/26)
Constraint Level
Very High (new airport, northeast-southwest approach)
Growth Driver
NMIA opened December 2025; Atal Setu / MTHL connectivity
Key Risk
CCZM for NMIA not yet aligned with full build-out; verify plot-level grid before committing
Khandeshwar / Mansarovar (Navi Mumbai)
Airport Distance
5-12 km (NMIA zone)
Constraint Level
Moderate to High
Growth Driver
Affordable entry point; Harbour Line access
Key Risk
65% of Navi Mumbai area within NMIA funnel zone; no historical CCZM precedent for this airport
Corridor / Locality
Airport Distance
Constraint Level
Growth Driver
Key Risk
Vile Parle / Santacruz
0-3 km (immediate vicinity, CSIA)
Very High (approach funnel)
Metro Line 3 access; established residential demand
Height cap at ~17.87 m; redevelopment relies on TDR under DCPR-2034
Andheri / Kurla
2-6 km (CSIA zone)
High
BKC adjacency; commercial corridor
AAI towers in Andheri under relocation; check individual grid before buying
Ghatkopar
~8-10 km (southeast of CSIA)
Moderate
Metro Line 1 hub; eastern suburbs growth
Conical surface zone; FSI up to 2.7 but TDR may be needed for full utilisation
Ulwe / Panvel
0-5 km (NMIA approach, runway 08/26)
Very High (new airport, northeast-southwest approach)
NMIA opened December 2025; Atal Setu / MTHL connectivity
CCZM for NMIA not yet aligned with full build-out; verify plot-level grid before committing
Khandeshwar / Mansarovar (Navi Mumbai)
5-12 km (NMIA zone)
Moderate to High
Affordable entry point; Harbour Line access
65% of Navi Mumbai area within NMIA funnel zone; no historical CCZM precedent for this airport
The most consequential corridor right now is Ulwe and the surrounding Navi Mumbai nodes within 5 km of NMIA. The airport opened for commercial operations on 25 December 2025. Its single runway 08/26 is oriented northeast-southwest, meaning the approach funnel cuts across a different axis from the CSIA funnel. AAI restricted 150 approved projects in Navi Mumbai to just 55 m height during the pre-operational planning period, and that ceiling covered developments from Nerul to Panvel. Buyers purchasing land near NMIA today without checking the current CCZM grid face the same regulatory surprise that CSIA buyers encountered for decades.
Frequently Asked Questions
What is the Mumbai airport funnel zone and does it affect my plot near Santacruz?
Yes. The funnel zone has covered 50% of suburban Mumbai, including Santacruz, Vile Parle, Kurla, and Andheri, since 1928. The AAI CCZM for Mumbai and Navi Mumbai governs permitted building height across a 20 km radius of CSIA under GSR 751(E), 2015.
Do I need an NOC from AAI to build near Mumbai airport?
Yes, if your building exceeds the CCZM permitted top elevation for your grid. At 4 km from CSIA, Mumbai airport height restrictions trigger AAI approval for buildings above just 17.87 m, the strictest threshold of any major Indian city. Apply via the NOCAS portal before starting construction.
How is AMSL height calculated for a plot near Mumbai airport?
Subtract your plot's certified ground elevation in meters AMSL from the CCZM Permitted Top Elevation for your grid square. Mumbai airport sits at 14 m AMSL. Even low-lying suburban plots consume the AMSL ceiling quickly. Get elevation certified in WGS-84 datum by a licensed surveyor before filing any NOC application.
What is the maximum building height allowed near Chhatrapati Shivaji Maharaj International Airport?
At 4 km from CSIA, the threshold is 17.87 m before AAI approval is required. In the approach funnel along runway 09/27, permitted height equals 2% of distance from the runway edge: 1,000 m away allows only 20 m of height. These are the tightest height limits in India's major metros.
What is TDR and how does it apply to Mumbai airport funnel zone properties?
TDR is the transfer of development rights. Maharashtra's April 2025 DCPR-2034 amendment allows funnel zone property owners in Santacruz, Vile Parle, Kurla, and Ghatkopar to generate TDR equal to unutilised FSI caused by height restrictions, then sell or use it elsewhere. Basic FSI within the funnel zone remains 1.
What happens if a building near Mumbai airport violates height restrictions?
Violations are enforced under the Aircraft (Demolition of Obstructions) Rules, 1994. AAI demolished its own ATC tower at CSIA in 2014 for penetrating runway 14/32's obstacle limitation surfaces by over 50 m. Courts can mandate demolition of non-compliant floors regardless of construction stage or the investment made.
Does Navi Mumbai International Airport create new funnel zone restrictions?
Yes. NMIA (runway 08/26, northeast-southwest orientation) opened commercially on 25 December 2025. Its funnel zone covers an estimated 65% of Navi Mumbai, including Ulwe, Chinchpada, Khandeshwar, and Mansarovar. AAI restricted 150 projects near Navi Mumbai to 55 m height during the pre-operational period. Verify your CCZM grid before buying any plot in this area.
Disclaimer
Mumbai Air Funnel Zones is only accessible with Premium Subscription.
Data Source & Verification
Source
Official Airports Authority of India (AAI) / Directorate General of Civil Aviation (DGCA) documents
Official Website
aai.aero
Coordinate Reference System
EPSG:4326 (WGS 84)
Geometry Type
Polygon / MultiPolygon
Data Format
Vector (GeoJSON) + Raster Tiles
Last Verified
2026
Status
Active