In the wake of the decentralisation reforms implemented in France in the early 1980's, the Coast Protection Act (“loi littoral”) was enacted in 1986 to counter-balance the significant regulatory powers devolved through those reforms to local municipalities in matters of urban planning. The Act's purpose was to contain urban sprawl, especially in heretofore undeveloped and protected areas like those found on the Corsican coastline. Many local officials protested that the act would freeze any development on vast tracts of land and become a hindrance to carrying out potentially lucrative tourism projects on the most attractive coastal frontage parcels. The inquiry draws on a statistical sample of 252 legal arguments put forward in 180 claims, which were filed in the Corsican Administrative Court during the 2004-2011 period. From a sociological perspective, we examine in this article the strategies behind litigation and the use of the administrative courts as a means to resolve conflicts that have arisen over the attempted development of protected coastal areas. Special attention is paid to disputes over proposed development projects against which claims have been filed by local inhabitants and state administrators with the intention of containing urban sprawl.