Construction surveys can cover a wide range of tasks. They can be used
before construction has begun, during the construction process, or after construction has been completed.
Construction surveys generally entail the laying out and staking of various features and structures such as
buildings, curb and gutter, and various utilities.
In the pre-construction phases, construction surveys usually begin by establishing a network
of highly accurate control points that will be used and referenced throughout the job. This phase is also
usually when initial marks are placed on the ground, indicating the location of the structures to be
During the construction process, construction surveys are used to layout and stake the
locations of other features and utilities, periodically as needed. Construction surveys can also be used
during this time to check the accuracy of the actual construction by comparing actual field measurements to plan
After construction has finished, construction surveys can be used to check the final results,
comparing what has actually been built with the way it was planned. This type of construction survey is
sometimes referred to as an "As-built" survey.