King County property record for 1129 21st Ave E, Seattle, WA 98112
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.25 ba · 2,410 sqft · built 1907 |
| Lot Size | 0.158 acres (6,900 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $208,000 (Aug 1987) |
| Tax Bill | $19,813 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 133830-0380 |
| Primary APN | 133830-0380 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.25 Baths |
| Half Baths | 2 Half Baths |
| Stories | 2 Stories |
| Building Area | 2,410 sqft Living Area |
| Gross Area | 3,370 sqft |
| 1st Floor Area | 1,210 sqft |
| 2nd Floor Area | 1,000 sqft |
| Basement Area | 1,160 sqft |
| Finished Basement | 200 sqft |
| Unfinished Basement | 960 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1907 |
|---|---|
| Effective Year Built | Effective 1907 |
| Lot Area | 6,900 sqft (0.158 acres) |
| Garage Type | Detached |
| Garage Area | 440 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 160 sqft |
| Deck Area | 280 sqft |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 133830038005 |
|---|---|
| Street Address | 1129 21ST AVE E |
| City | SEATTLE |
| State | WA |
| Zip | 98112-3512 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | NR3 |
| Legal Description | CAPITOL HILL ADD DIV # 5 PLAT BLOCK: 37 PLAT LOT: 6 |
| Legal Range | 04 |
| Legal Township | 25 |
| Legal Section | 28 |
| Legal Subdivision | CAPITOL HILL ADD DIV NO. 05 |
| Legal Block | 37 |
| Legal Lot Number | 6 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 6400 |
1129 21st Ave E is owned and occupied by two individuals who bought it in August 1987.
Source: King County records, as of July 7, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 1129 21ST AVE E, SEATTLE, WA 98112-3512 |
| 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 | Aug 31, 1987 · Amount on File |
| Deed Sale | Aug 31, 1987 · Amount on File |
| Deed Document Number | 19879210546 |
| Deed Book / Page | 12 / 23 |
| Record Updated | Sep 20, 2026 |
The 2026 property tax bill for 1129 21st Ave E was $19,813.
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 | $19,813.00 | ||
| 2025 | $1,899,000 (-1.81%) Land $1,210,000 Building $689,000 | $1,899,000 (-1.81%) Land $1,210,000 Building $689,000 | |
| 2024 | $18,730.00 | $1,934,000 Land $1,210,000 Building $724,000 | $1,934,000 Land $1,210,000 Building $724,000 |
| 2022 | $16,211.00 | $1,912,000 Land $1,160,000 Building $752,000 | $1,912,000 Land $1,160,000 Building $752,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 1129 21st Ave E in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 23, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
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.
The area around 1129 21st Ave E 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 | 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 851 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| CenturyLink Fiber · DSL in parts of the area | 2,000 / 1,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, T-Mobile.
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