Chartered Surveyor (CS) is the description (protected by law in many countries) of Professional Members and Fellows of the RICS entitled to use the designation (and a number of variations such as ""Chartered Building Surveyor"" or ""Chartered Quantity Surveyor"" or ""Chartered Civil Engineering Surveyor"" depending on their field of expertise) in Commonwealth countries and Ireland. Chartered originates from the Royal Charter granted to the world's first professional body of surveyors. Chartered Surveyors are entitled to use ""MRICS"" after their names.CS's are highly trained and experienced property professionals. Surveyors offer impartial, specialist advice on a variety of property related issues and the services which they provide are diverse.CS's work in all fields of property and building consultancy. At the most basic level, their duties include valuing property and looking for structural defects in buildings. They also provide expert consultancy advice in property, construction and related environmental issues.The representative professional body is the Royal Institution of Chartered Surveyors.