This study aims to recommend solution against the marketing related problems of PT Prospek Realtindo by applying the Model-based and Integrated Process Improvement (MIPI) method. In a project worth total of Rp 3 Trillion with a term of 2-3 years, the problems that arise have resulted in loss of profit for about Rp 5-6 billion in the first 7 months. Implementation of Model-based and Integrated Process Improvement with the tools expected to satisfy customers, as well as achieving business efficiency and effectiveness of the Company to enable better competition in the markets of low cost property which recently dynamic and competitive