Re-Polis \ retrofitting PolykatoikiaThe case of Mediterranean urban housing typology; measures to increase energy efficiency and comfort, exemplified for the Thessaloniki urban area, Greece.

This thesis deals with the issue of Greek urban residential buildings, by means of their energy behaviour. Since Greek cities are characterised by multi-family buildings, the assessment of their energy performance is practically synonymous to the energy behaviour of multifamily residential buildings, the so called Polykatoikia. Apart from sustainability, the need of revival and redefinition of the Greek urban environment played a key role to the formation of this bottom-up methodology; hence, several parameters have been taken into account, based on the complexity and the versatility of Greek Polykatoikies. In this line of thought, a methodological approach is being proposed and applied to the city of Thessaloniki, a typical example of the Greek urban environment. The scope of this scheme is to create an integrated and flexible assessment tool, which will support the implementation of large scale retrofit policies. Consequently, the proposed methodology was designed in order to obtain the energy performance of urban environments, design intervention measures and evaluate their feasibility in regard to their environmental, economic and energy influence, both in a building unit scale and a city scale.