King County property record for 901 Seneca St, Seattle, WA 98101
| Property Type | Medical Building |
|---|---|
| Details | 76,968 sqft · built 1952 |
| Lot Size | 0.083 acres (3,600 sqft) |
| Owner | Company Name on File |
| Tax Bill | $797 (2024) |
| Deeds & Mortgages | Aug 2017 Loan Modification |
| Flood Zone | Zone X (minimal risk) |
| APN | 197920-0206 |
| Primary APN | 197920-0206 |
|---|---|
| Alternative APN |
|
| Stories | 8 Stories |
|---|---|
| Building Area | 76,968 sqft Gross Area |
| Basement Area | 6,352 sqft |
| Elevator | Elevator |
| Year Built | Built 1952 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Custom Design |
| Construction Type | Concrete |
| Fire Resistance | Fireproof Reinforced Concrete |
| Lot Area | 3,600 sqft (0.083 acres) |
| Lawn Sprinklers | Lawn Sprinklers |
| Heating System | Steam |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 197920020603 |
|---|---|
| Street Address | 901 SENECA ST |
| City | SEATTLE |
| State | WA |
| Zip | 98101 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Medical Building |
| Local Zoning Code | MIO-240-HR |
| Legal Description | DENNYS A A EXTENSION TERRYS 1ST WLY 1/2 PLAT BLOCK: 75 PLAT LOT: 1 |
| Legal Range | 04 |
| Legal Township | 25 |
| Legal Section | 32 |
| Legal Subdivision | DENNYS A A EXTENSION TERRYS 1ST |
| Legal Block | 75 |
| Legal Lot Number | 1 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 8300 |
901 Seneca St, a commercial property, is owned by a company.
Source: King County records, as of July 14, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | PO BOX 900, SEATTLE, WA 98111-0900 |
| 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 |
| Document Type | Loan Modification |
|---|---|
| Jurisdiction | KING WA |
| Recording Date | Aug 30, 2017 |
| Property Address | 901 SENECA ST, SEATTLE, WA 98101-2742 |
| Document Number | 0000001574 |
| Instrument Date | Aug 24, 2017 |
| Instrument | 201708301574 |
| Transaction Type | Mortgage |
| Record Updated | Sep 8, 2017 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Document Number | 1574 |
|---|---|
| Date | Aug 30, 2017 |
| Instrument | 201708301574 |
| Name | BANK OF NY MELLON |
|---|---|
| Type | Bank |
| Address | 400 S HOPE ST # 500, LOS ANGELES, CA 90071-2927 |
| Amount | Amount on Record |
|---|
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 | $9,475,800 (-3.47%) Land $2,070,000 Building $7,405,800 | $9,475,800 (-3.47%) Land $2,070,000 Building $7,405,800 | |
| 2024 | $797.00 Additional exemption filed | $9,816,700 Land $2,070,000 Building $7,746,700 | $9,816,700 Land $2,070,000 Building $7,746,700 |
| 2022 | $689.00 Additional exemption filed | $9,962,400 Land $2,070,000 Building $7,892,400 | $9,962,400 Land $2,070,000 Building $7,892,400 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 901 Seneca 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 901 Seneca 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 204 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable · Fiber in parts of the area | 2,000 / 2,000 |
| Astound Broadband Fiber · Cable | 2,000 / 2,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
May also be available: AT&T, CenturyLink, Google Fiber, T-Mobile.
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