Identification and georeferencing of second homes: a planning support in the sardinian coastal municipalities

Over the past 50 years, the Sardinian coastal territory has been protagonist of a landscape, social and economic transformation due to the spread of the "second homes" phenomenon, becoming over time the dominant island tourist model. Large coastal areas based on private property and extensive use of land make analysis on the presence and processes of the phenomenon necessary, to enable in this way a reconsideration of territorial planning in the coast. The proposed work highlights the need to build an information system that allows to define the amount and distribution of second homes in the Sardinian coastal land. The methodology used and proposed for the extension of the case study to other territorial realities is based on the use of cartographical basis and databases normally accessible by planning professionals. It has been therefore preferred to operate on a large sample of data, corresponding to about 1/3 of the total of the coastal municipalities of the Autonomous Region of Sardinia, with respect to the ability to analyze on a single "sample" municipality in which the availability of the needed databases were optimal. Also the methodologies used, based on the integration of data in a geo-statistics integrated environment such as that made available by Geographically based Information Systems, are very common and widespread. In this way we wanted to conclude an interesting experience avoiding the adoption of particularly sophisticated methods, processing data in their real form, in a large casuistic inhomogeneous in formats and structure, rebuilding, therefore, a real situation in which a spacial analysis of such vast proportions may be in operation.