Grant County property record for 427 Cooper St, Mattawa, WA 99349
| Property Type | Mobile Home |
|---|---|
| Details | 3 bd · 2 ba · 1,540 sqft · built 1974 |
| Lot Size | 0.137 acres (5,998 sqft) |
| Owner | Owner Name on Record |
| Last Sale | $55,000 (Nov 2012) |
| Flood Zone | Zone X (minimal risk) |
| APN | GARCE740B |
| Primary APN | GARCE740B |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Building Area | 1,540 sqft Total Area |
| Gross Area | 1,296 sqft |
| 1st Floor Area | 924 sqft |
| Year Built | Built 1974 |
|---|---|
| Architectural Style | Mobile Home |
| Lot Area | 5,998 sqft |
| Lot Dimensions | 100 ft deep x 60 ft wide |
| Garage Area | 864 sqft |
| Lean-To | 432 sqft |
| Utility Building | 864 sqft |
| Account Number | GARCE740B |
|---|---|
| Old Parcel Number | 30444000 |
| Street Address | 427 COOPER ST |
| City | MATTAWA |
| State | WA |
| Zip | 99349 |
| Property Category | Residential |
| Property Type | Residential > Prefabricated > Mobile Home |
| Legal Description | LOT 6 BLOCK 9 KISLER 1ST ADD |
| Legal Range | 23 |
| Legal Township | 15 |
| Legal Section | 35 |
| Legal Subdivision | KISLER 1ST ADD |
| Legal Block | 9 |
| Legal Lot Number | 6 |
| Jurisdiction | GRANT WA |
| Township / Civil Division | MATTAWA-ROYAL CITY |
| Census Block Group | 3 |
| Census Block | 3025 |
| Census Tract | 11403 |
Source: Grant County records, as of March 28, 2024
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 | 429 COOPER ST, MATTAWA, WA 99349-0102 |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 13, 2012 · Amount on Record |
| Deed Sale | Nov 13, 2012 · Amount on Record |
| Deed Document Number | 1308162 |
| Record Updated | Jun 7, 2026 |
Source: Grant County assessment roll, as of May 31, 2023
| Type | Name |
|---|---|
| State | Washington |
| County | Grant County |
| Municipality | Mattawa City |
| Unified School District | Wahluke School District (PK - 12) |
| Year | Assessed Value | Assessed Market Value |
|---|---|---|
| 2023 | $65,520 (+14.71%) Land $28,000 Building $37,520 | $65,520 (+14.71%) Land $28,000 Building $37,520 |
| 2022 | $57,120 Land $28,000 Building $29,120 | $57,120 Land $28,000 Building $29,120 |
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 September 29, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 64% of the US · lower than 69% of Washington |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | Indirect 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 Mattawa serves 5,370 people · EPA ID WA5352000 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Sep 2022 |
| Lead | Under 1 ppb (2021–2023) action level 15 ppb |
| Water Quality | E. coli resolved · Jun 2024 |
|---|---|
| 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 363 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Grant PUD Fiber | 1,000 / 1,000 |
May also be available: AT&T, Ziply Fiber.
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