King County property record for 23355 20th Ave S, Des Moines, WA 98198
| Property Type | Duplex |
|---|---|
| Details | 4 bd · 3.5 ba · 2,900 sqft · built 1980 |
| Lot Size | 0.165 acres (7,200 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $10,073 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 200630-0150 |
| Primary APN | 200630-0150 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 2 Half Baths |
| Stories | 2 Stories |
| Building Area | 2,900 sqft Living Area |
| Gross Area | 4,240 sqft |
| 1st Floor Area | 1,820 sqft |
| 2nd Floor Area | 1,080 sqft |
| Basement Area | 500 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1980 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Triplex |
| Lot Area | 7,200 sqft (0.165 acres) |
| Garage Type | Attached |
| Garage Area | 840 sqft |
| Parking Spaces | 3 Parking Spaces |
| Deck Area | 370 sqft |
| Heating Fuel | Electric |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 200630015002 |
|---|---|
| Street Address | 23355 20TH AVE S |
| City | DES MOINES |
| State | WA |
| Zip | 98198-7562 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | RA-3600 |
| Legal Description | DES-EAST ADDITION |
| Legal Range | 04 |
| Legal Township | 22 |
| Legal Section | 16 |
| Legal Subdivision | DES-EAST ADD |
| Legal Lot Number | 15 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 28902 |
23355 20th Ave S, a duplex, is owned by an individual who acquired it in March 1983.
Source: King County records, as of July 7, 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 | Individual Name on File |
|---|---|
| Mailing Address | 12345 VIEWOAK DR, SARATOGA, CA 95070-3234 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Mar 25, 1983 |
| Deed Sale | Mar 25, 1983 |
| Deed Document Number | 198310050706 |
| Deed Book / Page | 111 / 20 |
| Record Updated | Sep 20, 2026 |
The 2026 property tax bill for 23355 20th Ave S was $10,073.
Source: King County assessment roll, as of July 7, 2026
| Type | Name |
|---|---|
| State | Washington |
| County | King County |
| Municipality | Des Moines City |
| Unified School District | Highline School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $10,073.00 | ||
| 2025 | $810,000 (+8%) Land $280,000 Building $530,000 | $810,000 (+8%) Land $280,000 Building $530,000 | |
| 2024 | $8,840.00 | $750,000 Land $158,000 Building $592,000 | $750,000 Land $158,000 Building $592,000 |
| 2022 | $8,221.00 | $730,000 Land $138,000 Building $592,000 | $730,000 Land $138,000 Building $592,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 23355 20th Ave S in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective September 23, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 23355 20th Ave S is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 98.6% of Washington |
|---|---|
| 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 | HIGHLINE WATER DISTRICT serves 100,170 people · EPA ID WA5340650 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Sep 2021 |
| Lead | 1 ppb (2023–2025) 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 259 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 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: CenturyLink.
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