Green construction is a way for the building industry to move towards achieving sustainable development, taking into account environmental, socioeconomic and cultural issues. Differing approaches and differing economic markets lead to different priorities. This research aimed to promoting green building practices in Palestine through identified the challenges, barriers, applications and benefits which affect the implementation of greening construction in Palestine this achieved by studying green building practices in developed and developing countries and through conducting practical case studies, Also suggested specific modifications to conventional building practices to optimize the delivery of cost-efficient green building projects through conducting two simulation model using linear programming method to allocate best method to converse energy and water.