Columbia County property record for 440 E Main St, Dayton, WA 99328
| Property Type | Commercial |
|---|---|
| Details | 2 ba · 2,410 sqft · built 1930 |
| Lot Size | 0.11 acres (4,800 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $78,890 (Apr 2008) |
| Tax Bill | $1,645 (2025) |
| APN | 1-030-37-006-0001 |
| Primary APN | 1-030-37-006-0001 |
|---|---|
| Alternative APN |
|
| Full Baths | 2 Baths |
|---|---|
| Building Area | 2,410 sqft Total Area |
| Year Built | Built 1930 |
|---|---|
| Effective Year Built | Effective 1930 |
| Roof Material | Other |
| Lot Area | 4,800 sqft (0.11 acres) |
| Account Number | 263681 |
|---|---|
| Street Address | 440 E MAIN ST |
| City | DAYTON |
| State | WA |
| Zip | 99328-1357 |
| Property Category | Commercial |
| Property Type | Commercial > Retail |
| Local Zoning Code | DC1 |
| Legal Description | DAY & MUSTARD, NELY 20 LOT 5, SWLY 20 LOT 6 BLK 37; 4800 SQ. FT. |
| Legal Subdivision | DAY & MUSTARD |
| Legal Block | 37 |
| Legal Lot Number | 5,6 |
| Jurisdiction | COLUMBIA WA |
| Township / Civil Division | DAYTON |
| Census Block Group | 4 |
| Census Block | 4035 |
| Census Tract | 960200 |
Source: Columbia County records, as of May 27, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 1227 S 5TH ST, DAYTON, WA 99328-1625 |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 8, 2008 · Amount on Record |
| Deed Sale | Apr 8, 2008 · Amount on Record |
| Record Updated | Sep 20, 2026 |
Source: Columbia County assessment roll, as of May 27, 2026
| Type | Name |
|---|---|
| State | Washington |
| County | Columbia County |
| Municipality | Dayton City |
| Unified School District | Dayton School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,645.00 (+15.52%) | $143,810 (+9.64%) Land $34,590 Building $109,220 | $143,810 (+9.64%) Land $34,590 Building $109,220 |
| 2023 | $1,424.00 | $131,160 Land $34,590 Building $96,570 | $131,160 Land $34,590 Building $96,570 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Not on file |
|---|---|
| Nearby Flood Claims | 1 (1996) |
| Most Recent Claim | Feb 1996 · High Winds, Severe Storms And Flooding |
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 | 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 | DAYTON WATER DEPARTMENT serves 3,374 people · EPA ID WA5318250 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jul 2021 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| 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 338 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| PocketiNet Fiber | 2,000 / 2,000 |
| Columbia iConnect Fiber · Fixed Wireless | 1,000 / 1,000 |
| Spectrum Fiber · Cable in parts of the area | 1,000 / 1,000 |
| Inland Cellular Fiber | 1,000 / 1,000 |
May also be available: Verizon.
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