King County property record for 511 Prospect St, Seattle, WA 98109
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3.25 ba · 3,030 sqft · built 1925 |
| Lot Size | 0.057 acres (2,489 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $750,000 (Nov 2012) |
| Tax Bill | $12,490 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 545830-0055 |
| Primary APN | 545830-0055 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.25 Baths |
| Half Baths | 2 Half Baths |
| Stories | 2 Stories |
| Building Area | 3,030 sqft Living Area |
| Gross Area | 3,180 sqft |
| 1st Floor Area | 1,130 sqft |
| 2nd Floor Area | 1,100 sqft |
| Basement Area | 950 sqft |
| Finished Basement | 800 sqft |
| Unfinished Basement | 150 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1925 |
|---|---|
| Effective Year Built | Effective 1988 |
| Lot Area | 2,489 sqft (0.057 acres) |
| Porch | Open Porch |
| Porch Area | 50 sqft |
| Deck Area | 310 sqft |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 545830005504 |
|---|---|
| Street Address | 511 PROSPECT ST |
| City | SEATTLE |
| State | WA |
| Zip | 98109-3820 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LR3 (M) |
| Legal Description | MERCERS 2ND REPLAT BLKS 44 TO 53 LOT A SEATTLE SP #3009759 REC #20090202900013 SD SP BEING LOT 8 BLOCK 44 OF SD ADD PLAT BLOCK: 44 PLAT LOT: 8 |
| Legal Range | 04 |
| Legal Township | 25 |
| Legal Section | 30 |
| Legal Subdivision | MERCERS 2ND REPLAT BLKS 44 TO 53 |
| Legal Block | 44 |
| Legal Lot Number | 8 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 6702 |
511 Prospect St is owned and occupied by two individuals who bought it in November 2012.
Source: King County records, as of July 7, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 511 PROSPECT ST, SEATTLE, WA 98109-3820 |
| 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 | Nov 14, 2012 · Amount on File |
| Deed Sale | Nov 14, 2012 · Amount on File |
| Prior Sale | Mar 16, 2011 · Amount on File |
| Deed Document Number | 20122256 |
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 511 Prospect St was $12,490.
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 | $12,490.00 | ||
| 2025 | $1,211,000 (+1.76%) Land $652,000 Building $559,000 | $1,211,000 (+1.76%) Land $652,000 Building $559,000 | |
| 2024 | $11,407.00 | $1,190,000 Land $652,000 Building $538,000 | $1,190,000 Land $652,000 Building $538,000 |
| 2022 | $10,166.00 | $1,206,000 Land $690,000 Building $516,000 | $1,206,000 Land $690,000 Building $516,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 511 Prospect St 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.
The area around 511 Prospect St 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 630 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| CenturyLink Fiber | 8,000 / 8,000 |
| Xfinity Cable · Fiber in parts of the area | 2,000 / 2,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, AT&T, FiberFirst, Google Fiber.
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