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Cook County, Illinois
Land Surveying in Cook County, IL
Boundary, topographic, and construction staking surveys that put the design on the ground accurately the first time. Cook County is covered on a project basis through our Chicago, IL regional hub.
- Dispatched from
- Chicago, IL regional hub · project-based staffing
- Lead time
- Scheduled by phone or proposal; lead time confirmed when the scope is set
- Laboratory
- Sugar Land, TX laboratory under chain of custody, or a mobile laboratory for large projects
- Reporting
- Reviewed and issued under a documented quality system; formatted for owner, engineer, and building-official review
- Serving
- Cook County, IL — Chicago, Aurora, Naperville
- Coverage
- Illinois statewide · 27 regional hubs
- Technicians
- ACI- and NICET-certified field staff; licensed professionals in Illinois
- Call us
- (346) 420-5425
Scope
Survey services in Cook County
- Boundary and title surveys for acquisition and permitting
- Topographic surveys for civil design
- Construction staking: building corners, utilities, paving, and grades
- As-built surveys for closeout and conveyance
Full scope, standards list, and pricing basis: Land Surveying.
Local conditions
Survey conditions in Cook County
Cook County encompasses one of the most complex construction environments in the Midwest — a dense urban core in Chicago, established suburban corridors, and a regulatory landscape that involves municipal permitting, Cook County Highway Department review, and in many cases Illinois Department of Transportation coordination. Property boundaries here are rarely straightforward: decades of subdivision replats, vacated alleys, conflicting recorded easements, and the sheer density of underground utilities mean that inaccurate or incomplete survey work creates downstream problems that are expensive to untangle. Our survey crews, dispatched through our Chicago regional hub, perform boundary surveys, topographic surveys, and construction staking scaled to projects of every size — from infill urban lots to large mixed-use and industrial sites. Every deliverable is checked against recorded plat and legal description, and construction staking is set to the tolerances your design team specifies, so grading, utilities, and structures go in right the first time.
Much of Cook County is underlain by glacial lake clays and fill soils that are prone to settlement and lateral movement, which makes precise topographic and control data particularly important before earthwork and foundation design begin. Chicago-area winters also create a limited window for certain site work, so coordinating survey scheduling with your project calendar before ground freezes helps avoid delays.
FAQ · Cook County
How do recorded plat vacations and alley dedications in Chicago affect my boundary survey?
Vacated alleys and street dedications are common in Chicago's older grids and may or may not have been formally recorded in a way that is immediately obvious. Our surveyors research Cook County Recorder of Deeds documents, plat of subdivision records, and relevant municipal ordinances before fieldwork begins, so boundary conclusions reflect the actual chain of title rather than only the most recent deed description.
What horizontal and vertical datums do you use for surveys in Cook County, and does it matter for permit submittal?
We typically reference NAD 83 (Illinois East State Plane, FIPS 1201) for horizontal control and NAVD 88 for vertical control, which aligns with requirements from the City of Chicago, Cook County, and most municipal engineering departments in the county. Using the correct datum from the start prevents rework when floodplain, utility, or grading drawings need to match agency benchmarks.
My project is in a FEMA Special Flood Hazard Area along a Cook County waterway. What survey deliverables will I need?
Projects near the Des Plaines River, North Branch Chicago River, or other regulated waterways often require an Elevation Certificate or finished-floor and lowest-adjacent-grade data tied to NAVD 88. If you are pursuing a Letter of Map Amendment or Revision, FEMA requires specific survey certifications. We can produce the elevation data and certification documentation your engineer or floodplain administrator specifies.
Which office covers survey in Cook County, IL?
Field work in Cook County is dispatched through the Chicago, IL regional hub. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large Cook County projects.
Are the technicians you send to Cook County certified?
Field sampling and testing in Cook County are performed by our ACI- and NICET-certified technicians. Survey engineering and professional services are delivered with professionals licensed in Illinois, coordinated under one proposal.
Scheduling & proposals
Need land surveying in Cook County?
Call to schedule a technician, or send project documents for a written proposal.