A topographic survey is usually required for planning and zoning purposes, site layout, construction or engineering and architectural design. Often requested by Engineers or Architects for construction/design purposes, a Topo uses contour lines which show the shape of the land. Elevations are assigned to each contour line displaying the three-dimensional features of the property on a two-dimensional drawing. Existing improvements are also shown on a topo if necessary. Due to the nature of this particular survey, it can provide a CAD .dwg file for you or your architects’ use at your request. The boundary is not certified in a topographic drawing.