King County property record for 1904 12th Ave S, Seattle, WA 98144
| Property Type | Duplex |
|---|---|
| Details | 5 bd · 2 ba · 2,260 sqft · built 1904 |
| Lot Size | 0.138 acres (6,000 sqft) |
| Owner | Individual Name on File |
| Last Sale | $315,000 (Apr 2009) |
| Tax Bill | $8,999 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 149830-0580 |
| Primary APN | 149830-0580 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 2 Baths |
| Stories | 1 Story |
| Building Area | 2,260 sqft Living Area |
| Gross Area | 2,380 sqft |
| 1st Floor Area | 950 sqft |
| Upper Floors Area | 380 sqft |
| Basement Area | 1,050 sqft |
| Finished Basement | 930 sqft |
| Unfinished Basement | 120 sqft |
| Year Built | Built 1904 |
|---|---|
| Effective Year Built | Effective 1904 |
| Architectural Style | Duplex Single |
| Lot Area | 6,000 sqft (0.138 acres) |
| Porch | Open Porch |
| Porch Area | 120 sqft |
| Heating Fuel | Electric |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 149830058009 |
|---|---|
| Street Address | 1904 12TH AVE S |
| City | SEATTLE |
| State | WA |
| Zip | 98144-4106 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | RSL (M) |
| Legal Description | CENTRAL SEATTLE PLAT BLOCK: 10 PLAT LOT: 4 |
| Legal Range | 04 |
| Legal Township | 24 |
| Legal Section | 08 |
| Legal Subdivision | CENTRAL SEATTLE |
| Legal Block | 10 |
| Legal Lot Number | 4 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 3 |
| Census Block | 3005 |
| Census Tract | 9400 |
1904 12th Ave S, a duplex, is owned and occupied by an individual who bought it in April 2009.
Source: King County records, as of July 7, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 1904 12TH AVE S, SEATTLE, WA 98144-4106 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Person |
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 |
|---|---|
| Last Sale | Apr 15, 2009 · Amount on File |
| Deed Sale | Apr 15, 2009 · Amount on File |
| Prior Sale | Aug 14, 1985 · Amount on File |
| Deed Document Number | 20091797 |
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 1904 12th Ave S was $8,999.
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 | $8,999.00 | ||
| 2025 | $825,000 (+3.51%) Land $573,000 Building $252,000 | $825,000 (+3.51%) Land $573,000 Building $252,000 | |
| 2024 | $8,112.00 | $797,000 Land $573,000 Building $224,000 | $797,000 Land $573,000 Building $224,000 |
| 2022 | $7,191.00 | $801,000 Land $438,000 Building $363,000 | $801,000 Land $438,000 Building $363,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 1904 12th 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 1904 12th 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 | 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 913 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| CenturyLink Fiber · DSL in parts of the area | 8,000 / 8,000 |
| Xfinity Cable | 2,000 / 2,000 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
| Verizon Fixed Wireless | 1,000 / 75 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Google Fiber.
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