Climate change threatens both the natural environment as well as human habitats. Among them, coastal urban settlements, because they are so economically dependent from their proximity to water, are the most at risk; and therefore should be protected.The SECOA project, which is under European Framework 7, seeks to find appropriate recommendations for coastal cities and will target growing coastal settlements endangered by climate change, with the intention to find suitable recommendations for next 100 years. The main goal of this project is to study the land use and socio-economic impacts due to climate change on expanding urban habitats. It implies taking into account sea level rise, erosion, salinization leading to loss of fresh water and reduction of farmland, flooding and intensification of extreme events such as storm surges. Using two cities in eight countries, 5 European and 3 non European, it will compare individual findings such as sea level models, policy guidelines and recommendations. It will involve large metropolitan area to small regional coastal settlements. Among them are Rome, Lisbon, Gothenburg, Mumbai and Tel Aviv; and in UK it will consider two growing settlements: Thames Gateway, sub large metropolitan area, which is an example of an estuarine system, and Portsmouth, located on the coast. First of all, the project will create accurate and efficient maps of these two settlements to assess the extent of the sea-level rise. The focus will then be on conflicts on land uses, and the resultant policy that could be applied in order to adapt to sea level rise and other consequences due to climate change. The study will be based on the use of Geographical Information System (GIS) techniques. This will help to delineate which area would be affected by a sea level rise following different scenario (a rise of 75 cm or 1 m by 2100 could be expected). The current data available are not accurate and precise enough for a study at a local scale, therefore the use of adequate primary data (LiDAR) will give useful maps to visualise how much and where the sea level would reach in the case of sea level rise. Then, using GIS techniques, it will explore possibilities to find a sustainable way to organise land use in the area while trying to maintain the socio-economic stability after the loss of land and the subsequent movement of population or new building structures to protect the urban settlement at risk. The study of the Thames Gateway and Portsmouth will firstly give a better accuracy concerning the extent of the affected area due to sea level rise. This data would be an important step in terms of planning; highlighting exactly what cities should expect from sea-level rise. These geographical data will be attached to a set of recommendations adapted to each area. The models, maps and recommendations will result from an individual research as well as cooperation with the other involved cities. This project will give an in-depth overview of existing case studies of coastal management and recommendations on what individual cities can do to prepare themselves to face rising sea levels. The European project in which it is set will give the opportunity to compare methods and recommendations in order to learn from others already confronted by sea level rise and will also increase our understanding of the subject.