Public authorities’ awareness of the need to manage, control and plan urban space explains the rapid and often inconsistent development of urban planning law. This area has many facets : regulation of building permits and housing estates, development of local urban plans (PLU), expropriation procedure in the public interest, reparcelling and environmental protection. The proliferation of legislations and regulations supported by a plethora of case law constitutes a source of legal uncertainty. Duflot & Associates brings its experience in various aspects of urban planning law and provides expert advice. If no amicable agreement is reached, the firm ensures the management of proceedings before the relevant administrative and judicial courts.