With the IPLSA Find A Surveyor Directory, you can search by county, city, area of specialty, etc. The surveyors included in this directory are all licensed Professional Land Surveyors and members of the Illinois Professional Land Surveyors Association.

Please note that as you add criteria to the search, you will receive fewer results. To increase your number of results, remove some of the criteria. The information in the directory is populated by self-reporting by members, so some members may not have indicated areas of specialty or areas served.

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What is a Land Surveyor?

A Professional Land Surveyor is a person who has qualified by education and experience, and who has passed an examination for registration required by the State of Illinois to practice Land Surveying in Illinois. 
For more information on what a surveyor does, visit

When do you Need a Land Surveyor?

  • When buying or selling land, the location of which is not clearly defined on the ground.
  • Before land is divided.
  • If a lending institution requires a survey.
  • If a line or corner is not defined.
  • Before building close to a line.
  • Before a lot is conveyed from a larger tract.
  • Before developing the property.
  • When you believe someone has built on your property.

Survey Types

There are many, many types of surveys that can be conducted. Different types of surveys may be called different things by different people. Common survey types and a brief explanation are listed below.

ALTA Survey or Extended Title Insurance Coverage Survey

A survey made for the purpose of supplying a title company and lender with survey and location data necessary for the issuing of title and/or mortgage insurance. A detailed map is required to be done to “ALTA” specifications. Specifications of this type of Survey include (but are not limited to) determining property lines, location of improvements, identifying all easements, utilities and other conditions affecting the property. The Alta Survey is most often performed on commercial properties.

Boundary Survey

A boundary survey is used to establish the property lines of particular piece of land. Boundary surveys are typically performed to obtain building permits, to resolve property disputes, or for erecting fences. Easement lines may also be located with this type of survey.

Cadastral Survey

Original survey, resurvey, or retracement of public lands within the Public Land Survey System of the United States for restoration of property lines.

Construction Survey

Survey measurements made prior to or while construction is in progress.

Elevation or Floodplain Survey

Typically these are used to determine if a property is in a flood zone.

Geodetic Survey

A Land Survey with correction made to account for curvature of the earth and astronomic observations.

Lot Split Survey

Are needed when you may need to divide an existing parcel of land into two or more parcels.

Mining and other Subsurface Surveys

A survey that determines the location and dimensions of underground parts of a mine.

Site Plan Survey (Lot Survey or Plot Plan Survey)

A combination of boundary and topographic surveys for preparation of a site plan to be used for designing improvements or developments, and obtaining government building permits.

Subdivision Survey

A survey done in order to split a tract of land into smaller parcels.

Topographic Survey

A survey that measures the elevation of points on a particular piece of land, and presents them as contour lines on a plot.