King County property record for 520 Boylston Ave E, Seattle, WA 98102
| Property Type | Apartments (5+ Units) |
|---|---|
| Details | 11,265 sqft · built 1999 |
| Lot Size | 0.146 acres (6,356 sqft) |
| Owner | Company Name on Record |
| Last Sale | $2,747,000 (Dec 2005) |
| Tax Bill | $52,104 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 685070-0535 |
| Primary APN | 685070-0535 |
|---|---|
| Alternative APN |
|
| Units | 21 Units |
|---|---|
| Stories | 5 Stories |
| Building Area | 11,265 sqft Adjusted Area |
| Gross Area | 25,708 sqft |
| Elevator | Elevator |
| Year Built | Built 1999 |
|---|---|
| Effective Year Built | Effective 2006 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 6,356 sqft (0.146 acres) |
| View / Lot | Mountain |
| Garage Area | 12,003 sqft |
| Parking Spaces | 38 Parking Spaces |
| Lawn Sprinklers | Lawn Sprinklers |
| Cooling System | Central |
|---|---|
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 685070053507 |
|---|---|
| Street Address | 520 BOYLSTON AVE E |
| City | SEATTLE |
| State | WA |
| Zip | 98102-7019 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Apartments (5+ Units) |
| Local Zoning Code | MR (M) |
| Legal Description | PONTIUS A SUPL N 4.27 FT OF 9 & ALL 10 |
| Legal Range | 04 |
| Legal Township | 25 |
| Legal Section | 29 |
| Legal Subdivision | PONTIUS A SUPL |
| Legal Block | 39 |
| Legal Lot Number | 9-10 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 7403 |
Source: King County records, as of July 7, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 515 HARVARD AVE E, SEATTLE, WA 98102-6282 |
| Owner Type | Company |
| Vesting | Estate |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Dec 2, 2005 · Amount on Record |
| Deed Sale | Dec 2, 2005 · Amount on Record |
| Prior Sale | Aug 2, 1984 |
| Deed Document Number | 20051259 |
| Record Updated | Oct 29, 2026 |
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 | $52,104.00 (+2.69%) | ||
| 2025 | $5,133,000 (-4.77%) Land $2,542,400 Building $2,590,600 | $5,133,000 (-4.77%) Land $2,542,400 Building $2,590,600 | |
| 2024 | $50,740.00 (-6.37%) | $5,390,000 (-17.7%) Land $2,542,400 Building $2,847,600 | $5,390,000 (-17.7%) Land $2,542,400 Building $2,847,600 |
| 2022 | $54,192.00 | $6,549,000 Land $2,288,100 Building $4,260,900 | $6,549,000 Land $2,288,100 Building $4,260,900 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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.
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 931 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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