The operative urban planning document is the land-use planning (in French, Plan d’Occupation des Sols – POS) of the city of Lavaur, approved on October 28th, 1999, amended on 02/20/2003, 06/24/2004, 03/03/2005, 06/22/2005 and 05/23/2006, put in review on 06/24/2004.
If you want to build or lead some improvements of your housing in Lavaur, the urban planning local service helps and advises you in your administrative procedures.