King County property record for 3420 42nd Ave W, Seattle, WA 98199
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 2,500 sqft · built 1938 |
| Lot Size | 0.117 acres (5,083 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $820,000 (Jan 2003) |
| Tax Bill | $15,511 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 736960-0125 |
| Primary APN | 736960-0125 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Stories | 2 Stories |
| Building Area | 2,500 sqft Living Area |
| Gross Area | 3,330 sqft |
| 1st Floor Area | 1,200 sqft |
| 2nd Floor Area | 1,150 sqft |
| Basement Area | 980 sqft |
| Finished Basement | 150 sqft |
| Unfinished Basement | 830 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1938 |
|---|---|
| Effective Year Built | Effective 1999 |
| Lot Area | 5,083 sqft (0.117 acres) |
| Garage Type | Detached |
| Garage Area | 580 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 736960012507 |
|---|---|
| Street Address | 3420 42ND AVE W |
| City | SEATTLE |
| State | WA |
| Zip | 98199-1838 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | NR3 |
| Legal Description | ROBERTSONS ADD PLAT BLOCK: 2 PLAT LOT: 9 |
| Legal Range | 03 |
| Legal Township | 25 |
| Legal Section | 15 |
| Legal Subdivision | ROBERTSONS ADD |
| Legal Block | 2 |
| Legal Lot Number | 9 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 2 |
| Census Block | 2010 |
| Census Tract | 5600 |
3420 42nd Ave W is owned and occupied by two individuals who bought it in January 2003.
Source: King County records, as of July 7, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3420 42ND AVE W, SEATTLE, WA 98199-1838 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Jan 2, 2003 · Amount on File |
| Deed Sale | Jan 2, 2003 · Amount on File |
| Prior Sale | Mar 30, 1999 · Amount on File |
| Deed Document Number | 20032611 |
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 3420 42nd Ave W was $15,511.
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 | $15,511.00 | ||
| 2025 | $1,492,000 (+2.4%) Land $933,000 Building $559,000 | $1,492,000 (+2.4%) Land $933,000 Building $559,000 | |
| 2024 | $14,088.00 | $1,457,000 Land $915,000 Building $542,000 | $1,457,000 Land $915,000 Building $542,000 |
| 2022 | $12,249.00 | $1,424,000 Land $732,000 Building $692,000 | $1,424,000 Land $732,000 Building $692,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3420 42nd Ave W in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2013.
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 | 7 in force |
| Nearby Flood Claims | 1 (2013) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Apr 2013 · other causes |
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 3420 42nd Ave W 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 634 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| CenturyLink Fiber | 2,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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