This study aims to determine and analyze law protection for land buyers who have had good intentions when buying the land, to know and analyze the causes or factors that result in law protection for land buyers with good intentions that do not reflect a sense of justice and to find the reconstruction of law protection for land buyers with good intentions that could reflect the value of justice. The study was conducted in the perspective of the Constructivism paradigm with the type of socio-legal research and qualitative approach methods. Data used in this research are from interviews and questionnaires supported by literature, legislation and various public documents, while the data analysis was carried out by the method of qualitative critical analysis. The results of the study show that the law protection of buyers who have made repayments in the sale and purchase of problematic land is not fair, this is due to the legal culture of the seller who is often dishonest regarding the status of the land, and the existence of third parties related to the seller who also demands the rights to a land which is also detrimental to the buyer. There is an effort through the judiciary in its development altough it is quite long and expensive, so it is necessary to reconstruct regulations regarding the technical supervision of land sale and purchase in Indonesia so that it can better reflect the value of justice.