TheSpanishhousingcooperativesaretemporaryorganizationsaimingatbuildinghomesfortheirmemberswiththehelpofprofessionalagentstoensureapricewhichcoversonlytheactualcosts,withoutanyprofitoftheprivatedevelopmentcompanyand,consequentlyalowerpricethanthemarketprice,andaffordableforthepeople.HousesproducedincooperativeregimeconstituteaconsiderablepartofthesubsidizedhousinginSpain,whicharegradedintothreecategoriesaccordingtotheratioofthebeneficiary'sincometotheminimumwage.Theirpercentageintheoverallhousesbuilthasalsobeenincreasinginrecentyears.Thereasonofthegrowthliesnotonlyinitscostefficiencybutalsoinsomeotheradvantagesincludingthesocialcohesionoftheuserswhohaveorganizedthemselvesinthisregime.Theauthorgivesanexampleofthe"L'illa"buildingtodemonstratetheseadvantages.