A boundary survey is the process of researching and collecting evidence that aid in the determination of an individual or many adjoining property boundaries. A boundary survey is a high liability survey since it not only effects the subject property but all the adjoining neighbors and at times entire blocks.
There are several different reasons for having a boundary survey done, the most common of which are determining ownership, conflicts with neighbors or during a real estate transaction.

2D Topo is a planimetric survey/plan which is a plan of an area showing only its horizontal features such as roadways, parking areas, buildings, above ground utilities and other “plane” features.