A land survey includes the layout of a single property, including precise measurements and to-scale drawings of boundary lines, land improvements, and sometimes other features, like topography and drainage information. A plat map includes the layouts and boundary lines of several adjacent plots and basic structure measurements. Surveys are normally more valuable for homeowners and buyers, and plat maps are for governmental use.

Land survey reports have a boatload of information relevant to several scenarios. Here are the types of information contained with a survey, though it depends on your chosen type of land survey. Exact boundaries and dimensions of a given property General topography, including both natural and artificial landmarks Location of utility fixtures, like water mains Confirmation of any easements or encroachments on a piece of property Assessment of land elevation to buy flood insurance Updated information to add to a pre-existing property map

If you or your mortgage lender think your land survey needs to be more accurate, double-check the survey report and get at least a second opinion from the original surveyor and an inspector, if possible. Although it’s unlikely, even reputable surveying companies can make mistakes. An inaccurate survey can cause problems down the road in the case of any property line disputes, so it’s best to resolve any inaccuracies as quickly as possible.

Costs vary, but you can expect to spend between $1,000 and $4,000 to prepare land for a mobile home or before you build a house. You’ll need to clear enough land for the foundation, which may require leveling or grading, as well as removing trees, stumps, and plants. Don’t forget to plan for permits and fees and the installation of a gas line, water line, and sewer main.