Rider levett bucknall philippines, inc. Is the biggest consultancy practice of quantity surveying in the philippines.  rider levett bucknall philippines, inc is the biggest consultancy practice of quantity surveying in the philippines. It is owned and operated by corazon clemeña ballard, it's chairman and president. The company started as liacor international construction services in 1989. In 1995, it became a member of the rider hunt levett and bailey group, and later in 2009 became a member of rider levett bucknall an independent, global property and construction practice with over 3,500 people in more than 120 offices across asia, oceania, europe, middle east, africa, and the americas.  rider levett bucknall philippines, inc. Provides a wide range of project  cost consultancy services within the construction industry, starting from the conceptualization of the project, through its handover upon completion, until its final account.