McHenry County property record for 635 Old Oak Cir, Algonquin, IL 60102
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,251 sqft · built 1990 |
| Lot Size | 0.232 acres (10,125 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $400,000 (Nov 2024) |
| Tax Bill | $9,032 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 19-34-227-018 |
| Primary APN | 19-34-227-018 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Stories | 2 Stories |
| Building Area | 2,251 sqft Living Area |
| 1st Floor Area | 1,236 sqft |
| Basement Area | 1,224 sqft |
| Year Built | Built 1990 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Colonial |
| Lot Area | 10,125 sqft (0.232 acres) |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Street Address | 635 OLD OAK CIR |
|---|---|
| City | ALGONQUIN |
| State | IL |
| Zip | 60102-3194 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | DOC 2024R0028845 LT 129 OLD OAK TERRACE UNIT 1 |
| Legal Subdivision | OLD OAK TERRACE |
| Legal Block | 227 |
| Legal Lot Number | 129 |
| Legal Unit | 1 |
| Jurisdiction | MCHENRY IL |
| Township / Civil Division | ALGONQUIN |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 871404 |
635 Old Oak Cir is owned by two individuals who bought it in November 2024.
Source: McHenry County records, as of October 1, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 946 PRINCETON CT, VERNON HILLS, IL 60061-1337 |
| Owner Type | Individual |
| Vesting | Married Couple |
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 Sale | Nov 1, 2024 · Amount on File |
| Deed Sale | Nov 1, 2024 · Amount on File |
| Prior Sale | Aug 23, 2012 · Amount on File |
| Record Updated | Oct 29, 2026 |
Source: McHenry County assessment roll, as of March 27, 2026
| Type | Name |
|---|---|
| State | Illinois |
| Municipality | Algonquin Village |
| County | McHenry County |
| County Subdivision | Algonquin Township |
| Unified School District | Community Unit School District 300 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2024 | $9,032.00 | $123,468 Land $27,133 Building $96,335 | $370,404 Land $81,399 Building $289,005 |
| 2022 | Homeowner's exemption | $90,902 Land $20,766 Building $70,136 | $272,706 Land $62,298 Building $210,408 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 635 Old Oak Cir in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2017.
Source: FEMA National Flood Hazard Layer, effective February 28, 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 |
| Nearby Flood Claims | 1 (2017) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | May 2017 |
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.
Wildfire risk around 635 Old Oak Cir is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 94% of Illinois |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 | ALGONQUIN serves 30,700 people · EPA ID IL1110050 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Aug 2025 |
| Lead | 2 ppb (2026–2028) action level 15 ppb |
| Copper | 1.6 mg/L (2022–2024) action level 1.3 mg/L |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None 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 480 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: Verizon.
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