Elevation Certificates in Lake County, IL
Lake County has some of the most varied flood risk of any Illinois county. The eastern edge faces the Lake Michigan shoreline, where shoreline erosion, wave action, and coastal flooding have intensified over recent decades. Inland, the Des Plaines River and a network of creek corridors create FEMA flood zones through communities including Libertyville, Gurnee, Round Lake Beach, and parts of Waukegan. If your property falls in one of these areas, you may need an Elevation Certificate.
This article explains what an Elevation Certificate is, when it is required in Lake County, how to get one, and what it costs in 2026.
What Is an Elevation Certificate?
An Elevation Certificate is an official FEMA document, completed by a licensed professional, that records the elevation of your structure relative to the Base Flood Elevation (BFE) in your area. The BFE represents the water surface elevation expected during a 100-year flood event.
Your flood insurance rate under the National Flood Insurance Program (NFIP) depends significantly on how your lowest floor elevation compares to the BFE. A structure that sits above the BFE qualifies for lower premiums. One that sits below it faces higher premiums. The Elevation Certificate gives your insurer the documented data they need to rate your policy.
Flood Risk Areas in Lake County
Lake Michigan Shoreline
Properties along the Lake Michigan shoreline in Waukegan, North Chicago, Zion, and other eastern Lake County communities face coastal flood risk. FEMA has updated flood maps in these areas as shoreline erosion has increased. Coastal flood zones, including Zone VE areas with wave action risk, carry some of the most stringent flood insurance requirements in Illinois. If you own or are buying shoreline property, checking the current FEMA flood map is essential before closing.
Des Plaines River Floodplain
The Des Plaines River runs through the western and central portions of Lake County, creating a significant floodplain corridor. Communities including Libertyville, Vernon Hills, and portions of Gurnee have parcels within FEMA Zone AE, the most common Special Flood Hazard Area designation. Properties within this zone that carry a federally backed mortgage are required to maintain flood insurance.
Creek Corridors and Inland Areas
Several creek systems throughout Lake County, including portions draining toward the North Shore, carry FEMA flood zone designations even in communities that are not immediately adjacent to the lake or major rivers. Round Lake Beach, Zion, and portions of Highland Park have areas where low-lying lots fall within mapped flood zones.
Check your specific parcel at msc.fema.gov before assuming you are in a low-risk area. Enter your address and review the official Flood Insurance Rate Map (FIRM) for your location.
When Do You Need an Elevation Certificate in Lake County?
- Your property is in a FEMA Special Flood Hazard Area (Zone A, AE, VE, or another SFHA designation)
- Your mortgage lender requires flood insurance as a loan condition
- You want to challenge a flood zone designation that you believe is incorrect through a FEMA Letter of Map Amendment (LOMA)
- You are buying a shoreline property and need to understand flood insurance costs before closing
- You are building in a flood zone and the local municipality requires documentation for a building permit
How to Get an Elevation Certificate in Lake County
Step 1: Check the FEMA Flood Map
Go to msc.fema.gov and search your address. If your property is in Zone X, you are in a low-risk area and likely do not need a certificate for insurance purposes. If you see Zone A, AE, AO, VE, or another SFHA designation, proceed with the next steps.
Step 2: Hire a Licensed Professional
Only a licensed PLS, engineer, or architect can complete the official FEMA Elevation Certificate form. Verify any surveyor's Illinois license at idfpr.illinois.gov. Given the complex flood zone environment in Lake County, strongly prefer hiring someone who has prepared Elevation Certificates specifically in Lake County and is familiar with FEMA's updated coastal and riverine flood maps for the area.
Step 3: Understand What They Will Measure
The surveyor will measure the elevation of your lowest floor, the lowest adjacent grade around the structure, and other reference points required by the FEMA form. In Lake County, where properties may be on sloping moraine terrain or subject to coastal erosion, these measurements require precision and local knowledge of the reference benchmarks used in flood maps for this area.
Step 4: Receive and Use the Certificate
The completed and signed Elevation Certificate goes directly to your flood insurance agent. Keep a copy in your records. If you sell the property in the future, the certificate may transfer to the new owner if the structure has not been substantially modified.
Cost of an Elevation Certificate in Lake County
Expect to pay $500 to $800 for an Elevation Certificate in Lake County in 2026. The higher cost compared to downstate counties reflects the more complex terrain, the additional research required to navigate updated FEMA coastal flood maps, and the generally higher overhead of Chicago-area surveying firms.
FEMA Letter of Map Amendment
If your property appears in a flood zone on the FEMA map but the actual ground elevation places it above the BFE, you may qualify for a Letter of Map Amendment (LOMA). A successful LOMA can remove the mandatory flood insurance requirement and significantly reduce your insurance costs. The Elevation Certificate is the starting point for that process.
Need an Elevation Certificate in Lake County? Find licensed Lake County surveyors who can document your flood zone status and prepare your certificate.