King County property record for 3408 20th Ave S, Seattle, WA 98144
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,730 sqft · built 1928 |
| Lot Size | 0.073 acres (3,175 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $599,950 (Nov 2017) |
| Tax Bill | $8,536 (2026) |
| Deeds & Mortgages | May 2019 Mortgage Nov 2017 Sale & Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 531210-0055 |
| Primary APN | 531210-0055 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Stories | 1 Story |
| Building Area | 1,730 sqft Living Area |
| 1st Floor Area | 900 sqft |
| Basement Area | 830 sqft |
| Finished Basement | 830 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1928 |
|---|---|
| Effective Year Built | Effective 1928 |
| Lot Area | 3,175 sqft (0.073 acres) |
| Garage Type | Carport |
| Carport | Carport |
| Deck Area | 200 sqft |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 531210005504 |
|---|---|
| Street Address | 3408 20TH AVE S |
| City | SEATTLE |
| State | WA |
| Zip | 98144-6708 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | NR3 |
| Legal Description | MCELWAINS W P 1ST ADD PLAT BLOCK: 2 PLAT LOT: 2 |
| Legal Range | 04 |
| Legal Township | 24 |
| Legal Section | 16 |
| Legal Subdivision | MC ELWAINS W P 1ST ADD |
| Legal Block | 2 |
| Legal Lot Number | 2 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 1 |
| Census Block | 1019 |
| Census Tract | 10002 |
3408 20th Ave S is owned and occupied by two individuals who bought it in November 2017.
Source: King County records, as of July 7, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3408 20TH AVE S, SEATTLE, WA 98144-6708 |
| 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.
| Date | Document |
|---|---|
| May 9, 2019 | Deed of Trust, Mortgage · Conventional Mortgage BETTER MORTGAGE CORPORATION |
| Nov 16, 2017 | Warranty Deed, Transfer · Conventional Mortgage EAGLE HOME MORTGAGE LLC |
| Feb 10, 2017 | Warranty Deed, Transfer CHICAGO TITLE COMPANY, CHICAGO TITLE CO |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Nov 16, 2017 · Amount on File |
| Deed Sale | Nov 16, 2017 · Amount on File |
| Prior Sale | Feb 10, 2017 · Amount on File |
| Deed Document Number | 20171440 |
| Prior Transfer Date | Dec 30, 1991 |
| Prior Transfer Doc | 0000001816 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | KING WA |
| Property Address | 3408 20TH AVE S, SEATTLE, WA 98144-6708 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | CHICAGO TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000000700 |
|---|---|
| Date | May 9, 2019 |
| Instrument | 20190509000700 |
| Name | BETTER MORTGAGE CORPORATION |
|---|---|
| Type | Mortgage Company |
| Address | NEW YORK, NY 10006 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | May 1, 2049 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | KING WA |
| Recording Date | Nov 16, 2017 |
| Property Address | 3408 20TH AVE S, SEATTLE, WA 98144-6708 |
| Document Number | 0000001440 |
| Map Reference | VOL21 PG1 |
| Instrument Date | Nov 9, 2017 |
| Instrument | 20171116001440 |
| Transaction Type | Transfer |
| Record Updated | Jul 30, 2021 |
| Title Company | CHICAGO TITLE |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 3408 20TH AVE S, SEATTLE, WA 98144-6708 |
| Document Number | 0000001441 |
|---|---|
| Date | Nov 16, 2017 |
| Instrument | 20171116001441 |
| Name | EAGLE HOME MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Dec 1, 2047 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | KING WA |
| Recording Date | Feb 10, 2017 |
| Property Address | 3408 20TH AVE S, SEATTLE, WA 98144-6708 |
| Document Number | 0000000185 |
| Instrument Date | Feb 7, 2017 |
| Instrument | 201702100185 |
| Transaction Type | Transfer |
| Record Updated | Feb 16, 2017 |
| Title Company | CHICAGO TITLE COMPANY, CHICAGO TITLE CO |
| Amount | Amount on Record |
|---|---|
| Tax | $0.00 |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
The 2026 property tax bill for 3408 20th Ave S was $8,536.
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 | $8,536.00 | ||
| 2025 | $812,000 (+3.57%) Land $277,000 Building $535,000 | $812,000 (+3.57%) Land $277,000 Building $535,000 | |
| 2024 | $7,674.00 | $784,000 Land $277,000 Building $507,000 | $784,000 Land $277,000 Building $507,000 |
| 2022 | $6,787.00 | $773,000 Land $212,000 Building $561,000 | $773,000 Land $212,000 Building $561,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3408 20th Ave S 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 3408 20th 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 620 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 |
| Astound Broadband Cable | 1,500 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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