<p>Land Administration is needed to provide sustainable development of a country as it is concerned with land tenure, use, value and development. The Philippines is challenged as it has multiple land agencies having different and redundant land administration systems. Initial initiatives to have a single land agency did not prosper but recently, two (2) major national land agencies: the Land Management Bureau and the Land Registration Authority are initializing land information system linkages and data sharing. Local government units (LGU) in the Philippines are also mandated to perform land administration functions. It covers functions related to land use, value, development, and partially with land tenure.</p><p>The Land Administration Domain Model (LADM) can be used in the improvement of the land administration system of a country. It has been adopted by several countries worldwide and has been a subject of many academic researches. However, only few researches were done related to the adoption of LADM in the Philippines. With this research, LADM was used to integrate the land administration system functions of an LGU, specifically the City of Makati, Philippines. The results show that LADM can be adopted in the study area. Adoption done by the researchers was limited to two-dimensional classes with proposed additional external classes not included in the original LADM.</p>