The land planning system in Korea will extensively be revised according to the National Land Planning and Use Act. The new law takes the urban environmental problems from uncontrolled urban sprawl at urban-fringe areas into consideration. The planning policy of land suitability assessment which was introduced by the law is aiming to conserve environmentally important land at the areas early in the planning phase. However, the land determined as suitable for development after the assessment could also contain ecologically valuable resources, particularly in the metropolitan-fringe areas. This study is to suggest a methodology to achieve environmentally sustainable development at the urban-fringe areas in oder to preserve the ecological resources included in the land assessed as suitable for development. The methodology can classify ecological land covers in the area and determine them for preservation with their recursive adjustments until to be able to apply Transit-Oriented Development (TOD) model using GIS. In this study it is applied for Kyoha in the Paju City which is a typical urban-fringe area under high pressure of urban development. In the paper the concept of the methodology and the results of its application were presented.