This essay presents some issues of interest of the new Law of Cooperatives of the Community of Madrid 2/2023, of February 24, which has replaced the previous one, Law 4/1999 of March 30, regarding Housing Cooperatives under assignment of use. The needs that the new Law solves and the problems that its regulation generates or leaves unresolved are exposed, starting from the analysis of the norm, and its relationship and comparison with the previous one, and with the rest of the Laws of cooperatives and housing norms, as well as other provisions that affect cooperative matters in the field of housing. From cooperative regulation in general, state and regional, within the framework of the Social Economy, a broad vision of the complex and excessively broad regulation of this figure is offered; observing, from the beginning, however, the difficulty of solving the specific problems of some of the classes of cooperatives. In particular, based on the regulation of the housing Cooperatives under the regime of assignment of use in the different regional regulations, to then analyze in detail the regulation of the new Madrid Cooperative Law; ending with the questioning about the needs resolved in the new standard, and those that remain unsolved, or are new, and give rise to new problems.