Sume Materials (Incorporate materials) is a program which makes it easier for low-income families to purchase materials for the construction or renovation of their houses. Since 2004, we have been working by reusing disused materials and providing them to families living under deficient housing conditions. We receive donations from individuals and companies of disused and residuary materials, as well as of discontinued and residual articles from new constructions. We collect donations directly from the donors’ domicile and later we register, condition and repair them if necessary. Products are sold at social prices, depending on the payment capacity of each family. The program is self-sustaining and the surplus is allocated to other housing programs.