Expõe os principais aspectos da locação do imóvel urbano, de acordo com a Lei nº 8.245/91, com ênfase no contrato e principalmente em suas garantias acessórias, contribuindo assim para um maior entendimento do instigante tema.; The present study aims at presenting the main aspects of Real Estate rential according to Law nº 8.245/91. However, it is not our intention to present an exhaustive analysis of this subject; neither will we deal with the legal aspects resulting from the analysis of this kind of contract, established by the so-called “Tenant Law”. We will try to give a special treatment to the “Urban Building Law”, its sorts of contracts and mainly its accessory guarantees, thus contributing to a better understanding of this exciting theme.