Preferred Survey Inc. has spent the past three decades providing accurate, reliable land surveys to our valued customers throughout the Chicagoland area. Whether you are preparing to buy or sell a home, subdivide tracts of land, or make improvements to existing land, our experienced staff is dedicated to providing you with the highest level of service in the industry. We appreciate the opportunity to serve our clients. PSI and our surveyors are fully licensed by State of Illinois and are members of the Illinois Professional Land Surveyors Association.