King County property record for 100 23rd Ave S, Seattle, WA 98144
| Property Type | Commercial Office |
|---|---|
| Details | 39,953 sqft · built 1971 |
| Lot Size | 1.29 acres (56,243 sqft) |
| Owner | Company Name on File |
| Tax Bill | $28,686 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 364610-0005 |
| Primary APN | 364610-0005 |
|---|---|
| Alternative APN |
|
| Stories | 2 Stories |
|---|---|
| Building Area | 39,953 sqft Gross Area |
| Year Built | Built 1971 |
|---|---|
| Effective Year Built | Effective 1995 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Fire Resistance | Wood or Wood & Steel Frame |
| Lot Area | 56,243 sqft |
| Lawn Sprinklers | Lawn Sprinklers |
| Cooling System | Package A/C |
|---|---|
| Heating System | HVAC |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 364610000507 |
|---|---|
| Street Address | 100 23RD AVE S |
| City | SEATTLE |
| State | WA |
| Zip | 98144-2302 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Local Zoning Code | NC2-55 (M) |
| Legal Description | JACKSON STREET ADD TGW POR YESLER H L D-C # 42-47 LY S OF YESLER WAY & ADJ SD BLK 1 AKA E 100 FT OF 1 & ALL 2 SARAH B YESLERS TRS |
| Legal Range | 04 |
| Legal Township | 24 |
| Legal Section | 04 |
| Legal Subdivision | JACKSON STREET ADD |
| Legal Block | 1 |
| Legal Lot Number | 1-3 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 8900 |
100 23rd Ave S, a commercial property, is owned by a company that acquired it in November 1990.
Source: King County records, as of October 9, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 100 23RD AVE S, SEATTLE, WA 98144-2302 |
| 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 |
|---|---|
| Last Sale | Nov 15, 1990 |
| Deed Sale | Nov 15, 1990 |
| Deed Document Number | 1990199204271607 |
| Deed Book / Page | 2 / 24 |
| 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 |
|---|---|---|---|
| 2025 | $13,439,200 (-0.12%) Land $9,842,500 Building $3,596,700 | $13,439,200 (-0.12%) Land $9,842,500 Building $3,596,700 | |
| 2024 | $28,686.00 Additional exemption filed | $13,455,400 Land $9,842,500 Building $3,612,900 | $13,455,400 Land $9,842,500 Building $3,612,900 |
| 2022 | $8,897.00 (+13.42%) Additional exemption filed | ||
| 2021 | $7,844.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 100 23rd Ave S 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 100 23rd Ave S 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 772 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 |
| 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.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures