King County property record for 3420 Cascadia Ave S, Seattle, WA 98144 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 4.25 ba · 4,960 sqft · built 1916 |
| Lot Size | 0.257 acres (11,214 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $2,500,000 (Mar 2008) |
| Tax Bill | $39,847 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 570000-3900 |
| Primary APN | 570000-3900 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 4.25 Baths |
| Half Baths | 2 Half Baths |
| Stories | 1 Story |
| Building Area | 4,960 sqft Living Area |
| Gross Area | 5,630 sqft |
| 1st Floor Area | 1,500 sqft |
| Upper Floors Area | 2,060 sqft |
| Basement Area | 1,400 sqft |
| Finished Basement | 1,400 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1916 |
|---|---|
| Effective Year Built | Effective 1916 |
| Exterior Material | Brick |
| Lot Area | 11,214 sqft (0.257 acres) |
| View / Lot | Water View |
| Garage Type | Attached |
| Garage Area | 670 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 160 sqft |
| Deck Area | 720 sqft |
| Heating System | Radiant |
|---|---|
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 570000390007 |
|---|---|
| Street Address | 3420 CASCADIA AVE S |
| City | SEATTLE |
| State | WA |
| Zip | 98144-7214 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | MOUNT BAKER PARK ADD SLY 30 FT OF 3 & ALL 4 |
| Legal Range | 04 |
| Legal Township | 24 |
| Legal Section | 15 |
| Legal Subdivision | MOUNT BAKER PARK ADD |
| Legal Block | 60 |
| Legal Lot Number | 3-4 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 10102 |
Source: King County records · APN 570000-3900
Assessment roll updated July 7, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3420 CASCADIA AVE S, SEATTLE, WA 98144-7214 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Mar 17, 2008 · Amount on Record |
| Deed Sale | Mar 17, 2008 · Amount on Record |
| Prior Sale | Mar 31, 1995 · Amount on Record |
| Deed Document Number | 20082187 |
| Record Updated | Sep 20, 2026 |
Source: King County records · Assessment roll updated July 7, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | Washington |
| County | King County |
| Municipality | Seattle City |
| Unified School District | Seattle Public Schools (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $39,847.00 (+16.81%) | ||
| 2025 | $3,873,000 (+8.85%) Land $1,801,000 Building $2,072,000 | $3,873,000 (+8.85%) Land $1,801,000 Building $2,072,000 | |
| 2024 | $34,113.00 (+10.56%) | $3,558,000 (-2.06%) Land $1,801,000 Building $1,757,000 | $3,558,000 (-2.06%) Land $1,801,000 Building $1,757,000 |
| 2023 | $3,633,000 (-) Land $1,679,000 Building $1,954,000 | $3,633,000 (-) Land $1,679,000 Building $1,954,000 | |
| 2022 | $30,854.00 | $3,633,000 Land $1,679,000 Building $1,954,000 | $3,633,000 Land $1,679,000 Building $1,954,000 |
Source: FEMA National Flood Hazard Layer, King County (53033C), updated September 23, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 530330101022, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Nearby Flood Policies | 1 in force |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
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.
Source: NPS National Register of Historic Places · August 1, 2026 release · Last verified October 2026
| Historic District | Within the Mount Baker Park Historic District listed 2018 · 649 contributing resources · NRIS 100002975 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 168 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 2,000 |
| Starlink | Satellite (low-earth orbit) | 280 / 30 |
May also be available at this address: T-Mobile USA, Verizon, Lumen Technologies, AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.
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