Oman shows a substantial development during the 21st century. The country has made a considerable growth on various industries which contributes to the growing economy of the state. Among which the infrastructure development contributes a significant value. The government of Oman has enacted a localization policy called "Omanisation" which aimed at replacing expat worker with trained Omani personnel. The implementation of Omani policy was applied to lower the unemployment rates for Omani citizens. Further, the Omanisation allows Oman to be self-reliant in human resources by decreasing dependency on expatriates. The Ministry of Manpower has taken considerable amount of steps to achieve the targeted omanisation policy through introducing the new laws and rules for the human resources recruitments. However, there are limitations induced by the factors which prevents to achieve the targeted localisation metrics. This paper aims at assessing the achievement of the policy has had over the years in various sectors. Further, this paper also discusses the factors against the implementaion of localisation which are pertained to omani Quantity Surveying (QS) profession in detail. The author has adopeted various data collection techniques such as interviews questionaire survey and archival data analysis to unwind the fact regarding the challenges of the localisation policy facing in recent past years for the QS profession. The paper also recommends the posible ways to overcome these difficulties and sustains the localisation in QS profession.