La. Civ. Code art. 780
Building restrictions may be amended, whether such amendment lessens or increases a restriction, or may terminate or be terminated, as provided in the act that establishes them. In the absence of such provision, building restrictions may be amended or terminated for the whole or a part of the restricted area by agreement of owners representing more than one-half of the land area affected by the restrictions, excluding streets and street rights-of-way, if the restrictions have been in effect for at least fifteen years, or by agreement of both owners representing two-thirds of the land area affected and two-thirds of the owners of the land affected by the restrictions, excluding streets and street rights-of-way, if the restrictions have been in effect for more than ten years.
La. C.C. § 780