King County property record for 318 E Mercer St, Seattle, WA 98102
| Property Type | Duplex |
|---|---|
| Details | 3 bd · 2 ba · 1,510 sqft · built 1908 |
| Lot Size | 0.055 acres (2,400 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,165,000 (May 2022) |
| Tax Bill | $12,995 (2026) |
| Deeds & Mortgages | May 2022 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 684820-0026 |
| Primary APN | 684820-0026 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Stories | 2 Stories |
| Building Area | 1,510 sqft Living Area |
| Gross Area | 1,860 sqft |
| 1st Floor Area | 780 sqft |
| 2nd Floor Area | 730 sqft |
| Basement Area | 350 sqft |
| Year Built | Built 1908 |
|---|---|
| Effective Year Built | Effective 2023 |
| Architectural Style | Duplex Single |
| Lot Area | 2,400 sqft (0.055 acres) |
| Porch | Open Porch |
| Porch Area | 50 sqft |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 684820002609 |
|---|---|
| Street Address | 318 E MERCER ST |
| City | SEATTLE |
| State | WA |
| Zip | 98102-4713 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | LR3 (M) |
| Legal Description | PONTIUS 2ND ADD SUPL W 40 FT OF E 80 FT PLAT BLOCK: 31 PLAT LOT: 5 |
| Legal Range | 04 |
| Legal Township | 25 |
| Legal Section | 29 |
| Legal Subdivision | PONTIUS 2ND ADD SUPL |
| Legal Block | 31 |
| Legal Lot Number | 5 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 7404 |
318 E Mercer St, a duplex, is owned and occupied by two individuals who bought it in May 2022.
Source: King County records, as of July 7, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 318 E MERCER ST, SEATTLE, WA 98102-4713 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Married Couple |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 31, 2022 · Amount on File |
| Deed Sale | May 31, 2022 · Amount on File |
| Prior Sale | May 28, 2002 · Amount on File |
| Deed Document Number | 20221367 |
| Prior Transfer Date | Apr 15, 1999 |
| Prior Transfer Doc | 0000003056 |
| Record Updated | Oct 29, 2026 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | KING WA |
| Recording Date | May 31, 2022 |
| Property Address | 318 E MERCER ST, SEATTLE, WA 98102-4713 |
| Document Number | 0000001367 |
| Map Reference | VOL 5 PG 76 |
| Instrument Date | May 24, 2022 |
| Instrument | 20220531001367 |
| Transaction Type | Transfer |
| Record Updated | Jun 9, 2022 |
| Title Company | TICOR TITLE INSURANCE COMPANY, TICOR TITLE |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $19,842.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 2424 HOBART AVE SW, SEATTLE, WA 98116-4875 |
| Document Number | 0000001368 |
|---|---|
| Date | May 31, 2022 |
| Instrument | 20220531001368 |
| Name | BANK OF THE WEST |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jun 1, 2052 |
The 2026 property tax bill for 318 E Mercer St was $12,995.
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 | $12,995.00 | ||
| 2025 | $1,262,000 (+28.64%) Land $788,000 Building $474,000 | $1,262,000 (+28.64%) Land $788,000 Building $474,000 | |
| 2024 | $9,485.00 | $981,000 Land $788,000 Building $193,000 | $981,000 Land $788,000 Building $193,000 |
| 2022 | $9,817.00 | $1,163,000 Land $476,000 Building $687,000 | $1,163,000 Land $476,000 Building $687,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 318 E Mercer St 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 318 E Mercer 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 332 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 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: CenturyLink, Google Fiber, T-Mobile.
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