Clackamas County property record for 18985 Olson Ave, Lake Oswego, OR 97034
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 3,244 sqft · built 1970 |
| Lot Size | 0.451 acres (19,650 sqft) |
| Owner | Owner Name on Record |
| Last Sale | $268,900 (Jun 2000) |
| Tax Bill | $7,949 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 21E20BA00700 |
| Primary APN | 21E20BA00700 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Stories | 1 Story |
| Building Area | 3,244 sqft Living Area |
| 1st Floor Area | 1,622 sqft |
| Fireplace | Fireplace |
| Year Built | Built 1970 |
|---|---|
| Exterior Material | Other |
| Foundation Type | Concrete |
| Roof Material | Composition Shingle |
| Lot Area | 19,650 sqft |
| Garage Area | 462 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air |
|---|
| Account Number | 00353520 |
|---|---|
| Street Address | 18985 OLSON AVE |
| City | LAKE OSWEGO |
| State | OR |
| Zip | 97034-7420 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R-15 |
| Legal Description | 1327 THOMSONS HALF AC #2 LT 2 |
| Legal Range | 01E |
| Legal Township | 02S |
| Legal Section | 20 |
| Legal Quarter | NW |
| Quarter-Quarter Section | NE |
| Legal Subdivision | THOMSONS HALF AC |
| Legal Lot Number | 2 |
| Jurisdiction | CLACKAMAS OR |
| Township / Civil Division | NORTHWEST CLACKAMAS |
| Census Block Group | 2 |
| Census Block | 2012 |
| Census Tract | 20403 |
Source: Clackamas County records, as of November 17, 2025
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Owner Name on Record |
|---|---|
| Mailing Address | 18985 OLSON AVE, LAKE OSWEGO, OR 97034-7420 |
| Occupancy | Owner Occupied |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 8, 2000 · Amount on Record |
| Deed Sale | Jun 8, 2000 · Amount on Record |
| Prior Sale | Jun 8, 2000 · Amount on Record |
| Deed Document Number | 0000037089 |
| Last Transfer Date | May 18, 2009 |
| Transfer Doc | 0000034449 |
| Record Updated | Jun 8, 2026 |
Source: Clackamas County assessment roll, as of September 30, 2025
| Type | Name |
|---|---|
| State | Oregon |
| County | Clackamas County |
| Municipality | Lake Oswego City |
| Unified School District | Lake Oswego School District 7J (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $7,949.00 (+5.85%) | $414,838 (+6.09%) | $1,027,027 (+3.24%) Land $374,027 Building $653,000 |
| 2023 | $7,510.00 | $391,026 | $994,778 Land $359,678 Building $635,100 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective April 12, 2026 · 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 |
| Flood Insurance Cost | Premium on Record median of 48 policies |
| Nearby Flood Policies | 48 in force |
| Nearby Flood Claims | 20 (1996–1999) |
| Claims Outside the SFHA | 3 of 20 |
| Most Recent Claim | Feb 1999 · river or lake flooding |
| Claims by Event |
|
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 97% of the US · lower than 99.3% of Oregon |
|---|---|
| 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 | RIVERGROVE WATER DISTRICT serves 4,000 people · EPA ID OR4100461 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Nov 2021 |
| Lead | 3 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 26 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 356 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
May also be available: Verizon.
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