ATTIKO METRO SA has included at the base project of the Thessaloniki Metro the necessary infrastructure required to enable the creation of further Metro extensions of the network with no interruption to the operation of the system. At the A' phase of the Thessaloniki Metro extensions, two extensions are provided for to be constructed:

	North-west Extension to Stavroupoli: 5 km with 5 new stations
	South-east Extension to Kalamaria: 4.8 km with 5 new Stations

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With regard to the two aforementioned extensions the following has been taken into consideration:

	Civil Works, E/M and Railway Systems of the Base Project provisions.
	Train operation with double headway.
	Moreover, the need to construct an additional depot is under consideration.

The project related to the construction of the first extension of the Thessaloniki Metro towards Kalamaria, was put to tender on 6th of May 2009.This project refers to the construction of 5 modern Metro stations and 4,8 km of underground line, also incorporating the construction of a Transfer Station and a car parking facility with a capacity of 1000 parking spaces at the terminal station of Mikra.

As regards the extension of the Line to Kalamaria, a funding amounting to EURO 425,000,000 by the 4th CSF was secured by the 4th CSF, while the provisional Contractor responsible for the construction of the Project was appointed in 2012.

Moreover, the preliminary designs for the extension to Stavroupolis and Efkarpia (5 stations and geotechnical investigations, alignment of the project, etc.) have been completed and subsequently the project maturity level studies shall commence; consideration is also given to the possible further extension of the project towards the area’s Hospitals.

Beyond the above, the future extension plan also foresees:

	The eastward extension, to achieve the connection with Micra Airport, possibly by means of a surface fixed route mode, with 4 stations
	The westward extension, by extending the base line from the New Railway Station, to Evosmos and Kordelio, with 5 stations

while, in parallel, the feasibility of creating new branches to the base project is also examined.

With these extensions in place, the form of the city of Thassaloniki will change, the city will be radically upgraded and the quality of the citizens daily life shall be considerably improved.