Question 1

What are the height restrictions near Bengaluru airport?

Accepted Answer

Within 5 km of any aerodrome's ARP, construction is capped at 45 m AGL. In the funnel zone, height equals 2% of distance from the runway edge. All zones fall under Aircraft Act 1934 and require a height NOC. Note: NOCs for KIAL and Jakkur GFTS are obtained via AAI’s NOCAS portal. NOCs for HAL Airport and Yelahanka Defence Aerodrome must be obtained directly from the respective defence authority — not via NOCAS.

Question 2

Do I need an AAI NOC to buy or build near Kempegowda International Airport?

Accepted Answer

Yes. Any construction within 20 km of KIAL's ARP requires a height NOC from AAI. Bengaluru's CCZM makes this mandatory regardless of floor count or structure type under GSR 751(E) 2015.

Question 3

What is the AMSL limit for construction near HAL airport in Bengaluru?

Accepted Answer

There is no single universal AMSL limit near HAL airport — your Permissible Top Elevation (PTE) is calculated as HAL’s surface height limit for your specific grid cell minus your site’s verified AMSL elevation. The 932 m AMSL figure in the Raheja Vivarea case arose because HAL’s runway is at 875 m AMSL and the Inner Horizontal Surface adds 45 m, yielding 920 m + margins for that grid — but your site’s PTE will differ based on exact coordinates and ground elevation. Always use NOCAS to obtain the PTE for your specific plot before any building plan submission.

Question 4

How do I check the Colour Coded Zoning Map for my Bengaluru plot?

Accepted Answer

Check your plot’s air funnel zone instantly on the 1acre Air Funnel Zones layer — it overlays AAI CCZM boundaries directly against survey numbers.  Check 1acre Premium . For the official Permissible Top Elevation (PTE) in metres AMSL for your exact grid cell, download the CCZM from nocas2.aai.aero and use the NOCAS pre-check tool with your plot’s WGS84 coordinates. The PTE is the maximum height your structure can reach above mean sea level — subtract your site’s verified ground elevation to get your actual permitted building height.

Question 5

Can I build more than 14 floors near an airport in Bengaluru?

Accepted Answer

Not within 5 km of any aerodrome's ARP. That zone caps height at 45 m AGL, roughly 14 floors. Beyond 5 km, permitted height increases by 1 m per 20 m distance under the conical surface rules, subject to site AMSL.

Question 6

What happens if a building violates Bengaluru airport height restrictions?

Accepted Answer

Demolition, at the developer's cost. Karnataka High Court ordered Chalet Hotels to remove seven floors from the Raheja Vivarea complex in Koramangala in 2021. Buyers in violation-risk buildings can be barred from occupancy and face OC denial.

Question 7

Is the AAI height NOC required for plots in Devanahalli or Yelahanka?

Accepted Answer

Yes for both. Devanahalli falls under KIAL’s NOC zone — apply via AAI NOCAS. Yelahanka may require separate NOCs from: (1) AAI via NOCAS for KIAL and/or GFTS Jakkur surfaces, and (2) Yelahanka Defence Aerodrome authority directly — this component cannot be obtained via NOCAS. Each aerodrome has a different ARP elevation and NOC-issuing authority.

Question 8

How do I apply for an airport height NOC on NOCAS for a Bengaluru property?

Accepted Answer

Register at nocas2.aai.aero, submit plot WGS84 coordinates and a certified AMSL elevation certificate (the AMSL certificate must be from a government-authorised agency or a surveyor certified by a government department — CPWD, State PWD, Survey of India, or AAI-empanelled surveyor — a privately-certified elevation carries the risk of the NOC being voided if the figure is later disputed), upload structural drawings showing height AMSL, and pay the fee. AAI processes applications within three weeks; the NOC is valid for eight years.

Verified lands & plots for sale falling under the Bengaluru Air Funnel Zones.