A survey does not automatically split a parcel of land. Most surveys are done to locate buildings on a parcel of land for mortgage purposes, or to determine lot lines for putting up fences. A survey will be required when building a structure on a parcel of land. A specialized survey called a Certified Survey Map (CSM) will split land once it is recorded with the Register of Deeds Office. A certified survey map constitutes property that has been surveyed by a Registered Land Surveyor and has been approved by appropriate units of government.