When a person decides to construct a new building on their existing property, these are the two survey-related blunders they will often end up making.
Assuming that the land survey they had done many years ago is still accurate
When a person first buys a property, they will often have a land survey done. If a person does this and then decides, a couple of decades later, to build some new structure on this property, and they may mistakenly believe that the survey they had done all those years ago will still be useful to them when planning their construction work, disaster might strike.
The truth is that it is highly unlikely that the contents of this survey will be relevant or accurate. For example, if the original land surveying process indicated that a piece of land on the property between one of its trees and a riverbed spanned 400 feet, and the owner intended to build their structure in this spot, their construction project could turn out to be a total failure if they decided to base their building plans on this old information.
The reason for this is as follows; over the course of the decades since that first survey was done, the riverbed may have eroded some of the soil surrounding it and the tree's trunk may have expanded, resulting in the piece of land between these two features shrinking to a size that is far less than 400 feet.
As such, if this person proceeded with their project, under the assumption that they have 400 feet to work with, they would probably realize partway through their building work that they don't have enough ground space for their structure and that they bought far more construction materials than they actually needed (as they would only be able to build a small structure, that would require less building materials, in this spot). If however, they had a new land survey created which provided them with up-to-date dimensions, their building plans would be accurate and they would not overspend on materials.
Trying to do the land surveying work themselves
The other survey-related blunder that some people make is trying to do the land surveying work themselves. This is a mistake that can consume a lot of the person's time and money, as they may decide to buy some expensive equipment (such as a 3D laser scanner and theodolite) and spend many hours trying to learn how to use and set up these items.
The reality is that even with the best of intentions and a lot of effort, a person who does this could still produce an inaccurate survey that would not be of any use to them when they start planning their construction work. This is because learning how to do land surveying work (that is, learning how to accurately measure and map out a piece of land and how to interpret their findings) can take years. The money and time a person wastes on this attempt to do their own survey should be spent on using a reputable land surveying company's services, who could do the work faster and more accurately, and, therefore, provide this person with a survey that could actually help them to build a better structure.
For more information about land surveying, visit a website like http://www.communitysciences.com.