The construction of flats in Indonesia is the Government’s efforts to overcome land limitations. Flats are built by the development actors (developer). Before the building are formed, the development actors market flats to the buyers. When sale and purchase of the apartment unit has happened, the owner of the flats will get a certificate property rights over unit of flats as a sign of ownership of unit of flats. After the flats have been built, the owner can form the Association of Owner and Tenant of Flats Unit (PPPSRS) facilitated by the development actors as stated in Law No. 20 of 2011 on the Housing and Tenancy. But in practice, there are incompatibility about the deadline of the transfer of ownership and management of flats from the development actors to PPPSRS. The purpose of this research is to analyze the practice and the law of the deadline of the transfer of ownership and management of flats from the development actors to the Association of Owner and Tenant of Flats Unit (PPPSRS) by using normative approach with descriptive analytical and qualitative data analysis method the data of the research is secondary data obtained from the literature by using statue approach and conceptual approach. This thesis will discuss about the practice and the regulation of the deadline of the transfer of ownership and management of flats from the development actors to the Association of Owner and Tenant of Flats Unit (PPPSRS). The result of this research is certificate property rights over unit of flats must be immediately transferred on time to the owner of the flats unit and the development actors must immediately facilitate the formation of PPPSRS, in addition the Government must be firm in providing sanctions for violator who are late in transferring certificates and the management of flats.