DuPage County property record for 403 Saint Marks Ct, Oak Brook, IL 60523
| Property Type | Single Family Home |
|---|---|
| Details | 5,147 sqft · built 1985 |
| Lot Size | 0.53 acres (23,087 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $21,707 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 06-34-201-050 |
| Primary APN | 06-34-201-050 |
|---|
| Stories | 2 Stories |
|---|---|
| Building Area | 5,147 sqft Living Area |
| Gross Area | 7,221 sqft |
| 1st Floor Area | 3,073 sqft |
| 2nd Floor Area | 2,074 sqft |
| Basement Area | 2,074 sqft |
| Year Built | Built 1985 |
|---|---|
| Effective Year Built | Effective 1985 |
| Exterior Material | Brick |
| Construction Type | Brick |
| Lot Area | 23,087 sqft (0.53 acres) |
| Garage Type | Attached |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 403 SAINT MARKS CT |
|---|---|
| City | OAK BROOK |
| State | IL |
| Zip | 60523-2555 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R |
| Legal Description | TRINITY LAKES UNIT NO 4 ALL |
| Legal Subdivision | TRINITY LAKES UNIT NO 4 |
| Legal Lot Number | 184 |
| Legal Unit | 4 |
| Jurisdiction | DU PAGE IL |
| Township / Civil Division | YORK |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 844502 |
403 Saint Marks Ct is owned and occupied by two individuals who acquired it in May 2016.
Source: DuPage County records, as of August 17, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 403 SAINT MARKS CT, OAK BROOK, IL 60523-2555 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | May 1, 2016 |
| Transfer Doc | 0000043427 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 403 Saint Marks Ct was $21,707 with a veteran's exemption.
Source: DuPage County assessment roll, as of August 17, 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | DuPage County |
| County Subdivision | York Township |
| Municipality | Oak Brook Village |
| Elementary School District | Butler School District 53 (KG - 08) |
| Secondary School District | Hinsdale Township High School District 86 (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $21,707.00 | $620,056 Land $225,826 Building $394,230 | $1,860,168 Land $677,478 Building $1,182,690 |
| 2022 | $18,718.00 Homeowner's exemption Senior Citizen's exemption | $511,020 Land $186,120 Building $324,900 | $1,533,060 Land $558,360 Building $974,700 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 403 Saint Marks Ct in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 1, 2025 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 5 in force |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
The area around 403 Saint Marks Ct has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | OAK BROOK serves 9,400 people · EPA ID IL0430700 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Jun 2024 |
| Lead | Under 1 ppb (2024–2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 3 last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 261 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
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