A boundary survey is a type of land survey that involves determining and documenting the precise boundaries of a piece of land. The primary purpose of a boundary survey is to establish or verify property lines and corners. 

If your new project is within a flood zone, it will most likely need a flood elevation certificate completed by a licensed surveyor prior to proceeding. This is to ensure that your project meets elevation requirements and may avoid being damaged if a flood does occur. Flood elevation certificates may also be required for flood insurance pricing or to remove the existing flood insurance requirement on your home.   

Topographic surveys are commonly used in a variety of fields, including civil engineering, architecture, environmental planning, and land development. They provide a detailed and accurate representation of the land's surface, aiding in the planning, design, and construction of various projects.