Consent comes three years after architect was appointed

Rogers Stirk Harbour & Partners has won planning for a £266 million airport terminal in Geneva three years after winning the job.

Work was originally due to start in 2012 and be completed next year, but the scheme took longer than expected to get through planning.

It was approved by the federal authorities in Switzerland this month and is now scheduled to complete in 2020

The 520m long east wing will link to the existing terminal and be capable of handling 12 million passengers.

It was commissioned in response to an increase in commercial activity in medium- and long-haul flights at the airport.

Known as Aile Est, the 40,000sq m project will have six slots for jumbo jets. Three of the stands will be able to be split into two to accommodate smaller planes.

The new terminal will include departures and arrivals halls, gate lounge seating for departing passengers, additional first class airline lounges and technical basements.

RSHP has been collaborating with consultants from four countries.

The first phase Route Douaniere, a French vehicular tunnel linking the French sector to the French border, is set to open in March 2015.

The project is the latest airport scheme for the architect which won the Stirling Prize for its Barajas terminal in Madrid.