King County property record for 9643 20th Ave SW, Seattle, WA 98106
| Property Type | Public School (Administration, Campus, Dorms, Instruction) |
|---|---|
| Details | 53,411 sqft · built 1924 |
| Lot Size | 1.08 acres (47,045 sqft) |
| Owner | Company Name on File |
| Tax Bill | $8,640 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 300480-0005 |
| Primary APN | 300480-0005 |
|---|---|
| Alternative APN |
|
| Stories | 2 Stories |
|---|---|
| Building Area | 53,411 sqft Gross Area |
| Basement Area | 8,595 sqft |
| Year Built | Built 1924 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 47,045 sqft |
| Total Buildings | 2 Buildings |
| Heating System | Forced Air with A/C |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 300480000508 |
|---|---|
| Street Address | 9643 20TH AVE SW |
| City | SEATTLE |
| State | WA |
| Zip | 98106 |
| Property Category | Public Works |
| Property Type | Public Works > Public School (Administration, Campus, Dorms, Instruction) |
| Local Zoning Code | NR3 |
| Legal Description | HAINES HEIGHTS UNREC & POR VAC ALLEY |
| Legal Range | 03 |
| Legal Township | 23 |
| Legal Section | 01 |
| Legal Subdivision | HAINES HEIGHTS |
| Legal Block | 1 |
| Legal Lot Number | 1-9 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 2 |
| Census Block | 2020 |
| Census Tract | 11402 |
9643 20th Ave SW, a public works property, is owned by a company.
Source: King County records, as of July 7, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 710 9TH AVE, SEATTLE, WA 98104-2017 |
| Owner Type | Company |
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 |
|---|---|
| Record Updated | Sep 20, 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 |
|---|---|---|---|
| 2025 | $3,730,400 (+20.43%) Land $1,646,500 Building $2,083,900 | $3,730,400 (+20.43%) Land $1,646,500 Building $2,083,900 | |
| 2024 | $8,640.00 Additional exemption filed | $3,097,500 Land $1,034,900 Building $2,062,600 | $3,097,500 Land $1,034,900 Building $2,062,600 |
| 2022 | $7,438.00 Additional exemption filed |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 9643 20th Ave SW 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 9643 20th Ave SW 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 514 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| CenturyLink Fiber | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 1,000 / 75 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: T-Mobile.
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