Washington County property record for 438 S 18th Ave, Cornelius, OR 97113
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,230 sqft · built 1979 |
| Lot Size | 0.17 acres (7,405 sqft) |
| Owner | Individual Name on File |
| Last Sale | $216,000 (Nov 2007) |
| Tax Bill | $3,597 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1S303BC-11500 |
| Primary APN | 1S303BC-11500 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Plumbing Fixtures | 8 Plumbing Fixtures |
| Building Area | 1,230 sqft Living Area |
| Gross Area | 1,692 sqft |
| 1st Floor Area | 1,230 sqft |
| Flooring | Wood |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1979 |
| Exterior Material | Wood |
| Construction Type | Wood |
| Foundation Type | Footing |
| Roof Type | Gable/Hip |
| Roof Material | Composition Shingle |
| Lot Area | 7,405 sqft (0.17 acres) |
| Garage Type | Attached |
| Garage Area | 462 sqft |
| Driveway | Concrete Driveway |
| Driveway Area | 440 sqft |
| Parking Spaces | 2 Parking Spaces |
| Patio Area | 120 sqft |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Street Address | 438 S 18TH AVE |
|---|---|
| City | CORNELIUS |
| State | OR |
| Zip | 97113-6622 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R7 |
| Legal Description | RANCHO VERDE, LOT 37, ACRES 0.17 |
| Legal Range | 03W |
| Legal Township | 01S |
| Legal Section | 03 |
| Legal Subdivision | RANCHO VERDE |
| Legal Lot Number | 37 |
| Jurisdiction | WASHINGTON OR |
| Township / Civil Division | FOREST GROVE-CORNELIUS |
| Census Block Group | 3 |
| Census Block | 3004 |
| Census Tract | 32904 |
438 S 18th Ave is owned and occupied by an individual who acquired it in August 2012.
Source: Washington County records, as of May 28, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 438 S 18TH AVE, CORNELIUS, OR 97113-6622 |
| 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 | Name on Deed |
|---|---|
| Last Sale | Nov 15, 2007 · Amount on File |
| Deed Sale | Nov 15, 2007 · Amount on File |
| Prior Sale | Sep 2, 2004 · Amount on File |
| Deed Document Number | 2007119606 |
| Last Transfer Date | Aug 27, 2012 |
| Transfer Doc | 0000020653 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 438 S 18th Ave was $3,597, up 2.8% from the year before.
Source: Washington County assessment roll, as of May 28, 2026
| Type | Name |
|---|---|
| State | Oregon |
| County | Washington County |
| Municipality | Cornelius City |
| Unified School District | Forest Grove School District 15 (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $201,490 (+3%) | $422,100 (-5.38%) Land $242,010 Building $180,090 | |
| 2025 | $3,597.00 (+2.77%) | $195,630 (+3%) | $446,090 (+6.08%) Land $240,000 Building $206,090 |
| 2024 | $3,500.00 (+9.48%) | $189,940 (+3%) | $420,540 (+4.68%) Land $195,600 Building $224,940 |
| 2023 | $3,197.00 (+12.89%) | $184,410 (+3%) | $401,720 (-0.15%) Land $191,250 Building $210,470 |
| 2022 | $2,832.00 | $179,040 | $402,330 Land $166,310 Building $236,020 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 438 S 18th Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective April 14, 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 |
| Nearby Flood Policies | 6 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 438 S 18th Ave 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 | CITY OF CORNELIUS serves 14,490 people · EPA ID OR4100218 |
|---|---|
| Water Source | Purchased surface water from CITY OF HILLSBORO |
| Last State Inspection | Sep 2025 |
| Lead | Under 1 ppb (2021–2023) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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 540 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ziply Fiber Fiber | 6,000 / 6,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Hunter Communications.
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