King County property record for 3433 21st Ave S, Seattle, WA 98144
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 2,080 sqft · built 1953 |
| Lot Size | 0.091 acres (3,970 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $341,470 (Jul 2009) |
| Tax Bill | $8,064 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 644440-0030 |
| Primary APN | 644440-0030 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Stories | 1 Story |
| Building Area | 2,080 sqft Living Area |
| 1st Floor Area | 1,040 sqft |
| Basement Area | 1,040 sqft |
| Finished Basement | 1,040 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1953 |
|---|---|
| Effective Year Built | Effective 1953 |
| Exterior Material | Brick |
| Lot Area | 3,970 sqft (0.091 acres) |
| Garage Type | Detached |
| Garage Area | 260 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Porch |
| Porch Area | 160 sqft |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 644440003007 |
|---|---|
| Street Address | 3433 21ST AVE S |
| City | SEATTLE |
| State | WA |
| Zip | 98144-6709 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | NR3 |
| Legal Description | OVERACKERS ADD LESS POR W OF A LN RNNG NELY FR SW COR OF SD LOT TO A PT ON N LN 5 FT ELY OF NW COR PLAT BLOCK: 1 PLAT LOT: 6 |
| Legal Range | 04 |
| Legal Township | 24 |
| Legal Section | 16 |
| Legal Subdivision | OVERACKERS ADD |
| Legal Block | 1 |
| Legal Lot Number | 6 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 1 |
| Census Block | 1019 |
| Census Tract | 10002 |
3433 21st Ave S is owned and occupied by two individuals who bought it in July 2009.
Source: King County records, as of July 7, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3433 21ST AVE S, SEATTLE, WA 98144-6709 |
| 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 | 2 Names on Deed |
|---|---|
| Last Sale | Jul 17, 2009 · Amount on File |
| Deed Sale | Jul 17, 2009 · Amount on File |
| Prior Sale | Mar 25, 1992 |
| Deed Document Number | 2009791 |
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 3433 21st Ave S was $8,064.
Source: King County assessment roll, as of July 7, 2026
| Type | Name |
|---|---|
| State | Washington |
| County | King County |
| Municipality | Seattle City |
| Unified School District | Seattle Public Schools (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $8,064.00 | ||
| 2025 | $751,000 (+3.44%) Land $297,000 Building $454,000 | $751,000 (+3.44%) Land $297,000 Building $454,000 | |
| 2024 | $7,266.00 | $726,000 Land $297,000 Building $429,000 | $726,000 Land $297,000 Building $429,000 |
| 2022 | $6,446.00 | $731,000 Land $228,000 Building $503,000 | $731,000 Land $228,000 Building $503,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3433 21st Ave S in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 23, 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.
Wildfire risk around 3433 21st 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 93% of the US · lower than 95% of Washington |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 | SEATTLE PUBLIC UTILITIES serves 1,161,961 people · EPA ID WA5377050 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jul 2025 |
| Lead | 2 ppb (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 620 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| CenturyLink Fiber | 2,000 / 1,000 |
| Astound Broadband Cable | 1,500 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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