King County property record for 515 18th Ave S, Seattle, WA 98144
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1 ba · 2,270 sqft · built 1918 |
| Lot Size | 0.123 acres (5,340 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $10,696 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 331950-1645 |
| Primary APN | 331950-1645 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1 Bath |
| Stories | 1 Story |
| Building Area | 2,270 sqft Living Area |
| Gross Area | 3,480 sqft |
| 1st Floor Area | 1,290 sqft |
| Upper Floors Area | 840 sqft |
| Basement Area | 1,350 sqft |
| Finished Basement | 140 sqft |
| Unfinished Basement | 1,210 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1918 |
|---|---|
| Effective Year Built | Effective 1918 |
| Architectural Style | Triplex |
| Lot Area | 5,340 sqft (0.123 acres) |
| Garage Type | Detached |
| Garage Area | 270 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Porch |
| Porch Area | 270 sqft |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 331950164508 |
|---|---|
| Street Address | 515 18TH AVE S |
| City | SEATTLE |
| State | WA |
| Zip | 98144-2130 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LR2 (M) |
| Legal Description | HILL TRACT ADD N 60 FT OF S 112 FT |
| Legal Range | 04 |
| Legal Township | 24 |
| Legal Section | 04 |
| Legal Subdivision | HILL TRACT ADD |
| Legal Block | 30 |
| Legal Lot Number | 15-16 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 1 |
| Census Block | 1021 |
| Census Tract | 9000 |
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 | Individual Name on Record |
|---|---|
| Mailing Address | 523 18TH AVE S, SEATTLE, WA 98144-2130 |
| Owner Type | Individual |
| Vesting | Single Person |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Sep 9, 1994 |
| Transfer Doc | 0000001710 |
| Record Updated | Sep 20, 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 |
|---|---|---|---|
| 2026 | $10,696.00 (+11.3%) | ||
| 2025 | $1,006,000 (+3.71%) Land $913,000 Building $93,000 | $1,006,000 (+3.71%) Land $913,000 Building $93,000 | |
| 2024 | $9,610.00 (+9.73%) | $970,000 (-2.41%) Land $896,000 Building $74,000 | $970,000 (-2.41%) Land $896,000 Building $74,000 |
| 2022 | $8,758.00 | $994,000 Land $773,000 Building $221,000 | $994,000 Land $773,000 Building $221,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 |
| Nearby Flood Claims | 1 (2020) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Dec 2020 · rainfall accumulation |
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: 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.
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