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.

A topographic survey gathers data about the natural and man-made features of the land, as well as its terrain. Permanent features such as buildings, fences, trees and streams accurately define the ground and its boundaries. Land contours and spot levels show the elevation of the terrain. Topographic maps are used by architects, engineers, building contractors and others to accurately visualize their sites and help bring forward development.