Thurston County property record for 401 18th Ave SE, Olympia, WA 98501
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 1,979 sqft · built 1904 |
| Lot Size | 0.11 acres (4,792 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $10 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 3940-01-00500 |
| Primary APN | 3940-01-00500 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Half Baths | 2 Half Baths |
| Plumbing Fixtures | 11 Plumbing Fixtures |
| Stories | 2 Stories |
| Building Area | 1,979 sqft Finished Area |
| 1st Floor Area | 1,195 sqft |
| 2nd Floor Area | 784 sqft |
| Upper Floors Area | 784 sqft |
| Attic | Attic |
| Attic Area | 224 sqft |
| Flooring | Carpet |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1904 |
|---|---|
| Effective Year Built | Effective 1967 |
| Architectural Style | Split Level |
| Exterior Material | Wood Siding |
| Foundation Type | Pier/Post & Beam |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 4,792 sqft (0.11 acres) |
| Garage Type | Carport |
| Carport | Carport |
| Carport Area | 140 sqft |
| Porch | Covered Porch |
| Porch Area | 205 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 401 18TH AVE SE |
|---|---|
| City | OLYMPIA |
| State | WA |
| Zip | 98501-2303 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | SECTION 23 TOWNSHIP 18 RANGE 2W PLAT CENTRAL ADDITION TO OLYMPIA BLK 1 LT 5 DOCUMENT 001/046 |
| Legal Range | 02W |
| Legal Township | 18N |
| Legal Section | 23 |
| Legal Quarter | SW |
| Legal Subdivision | CENTRAL ADDITION TO OLYMPIA |
| Legal Block | 1 |
| Legal Lot Number | 5 |
| Jurisdiction | THURSTON WA |
| Township / Civil Division | OLYMPIA |
| Census Block Group | 4 |
| Census Block | 4010 |
| Census Tract | 10100 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the South Capitol Neighborhood Historic District listed 1991 · 484 contributing resources · NRIS 91001516 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
401 18th Ave SE is owned and occupied by two individuals.
Source: Thurston County records, as of March 11, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 401 18TH AVE SE, OLYMPIA, WA 98501-2303 |
| 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 |
|---|---|
| Record Updated | Jun 8, 2026 |
The 2026 property tax bill for 401 18th Ave SE was $10.
Source: Thurston County assessment roll, as of January 1, 2026
| Type | Name |
|---|---|
| State | Washington |
| County | Thurston County |
| Municipality | Olympia City |
| Unified School District | Olympia School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $10.00 | ||
| 2025 | $623,200 Land $216,500 Building $406,700 | $623,200 Land $216,500 Building $406,700 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 401 18th Ave SE in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective May 8, 2024
| 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.
The area around 401 18th Ave SE 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 OLYMPIA serves 126,966 people · EPA ID WA5363450 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Nov 2022 |
| 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 | 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 379 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| CenturyLink DSL | 140 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
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