King County property record for 508 18th Ave S, Seattle, WA 98144
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3.75 ba · 3,020 sqft · built 1900 |
| Lot Size | 0.086 acres (3,738 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $1,934 (2026) |
| Deeds & Mortgages | Mar 2022 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 331950-1716 |
| Primary APN | 331950-1716 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.75 Baths |
| Half Baths | 1 Half Bath |
| Stories | 2 Stories |
| Building Area | 3,020 sqft Living Area |
| Gross Area | 3,620 sqft |
| 1st Floor Area | 1,290 sqft |
| 2nd Floor Area | 1,240 sqft |
| Upper Floors Area | 490 sqft |
| Basement Area | 600 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1900 |
| Architectural Style | Triplex |
| Lot Area | 3,738 sqft (0.086 acres) |
| Garage Type | Detached |
| Porch | Open Porch |
| Porch Area | 130 sqft |
| Heating System | Heat Pump |
|---|---|
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 331950171602 |
|---|---|
| Street Address | 508 18TH AVE S |
| City | SEATTLE |
| State | WA |
| Zip | 98144-2131 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LR1 (M) |
| Legal Description | HILL TRACT ADD LESS N 70 FT & LESS ALLEY |
| Legal Range | 04 |
| Legal Township | 24 |
| Legal Section | 04 |
| Legal Subdivision | HILL TRACT ADD |
| Legal Block | 31 |
| Legal Lot Number | 1-2 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 9000 |
508 18th Ave S is owned and occupied by two individuals who acquired it in May 2000.
Source: King County records, as of July 7, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 508 18TH AVE S, SEATTLE, WA 98144-2131 |
| 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 Transfer Date | May 11, 2000 |
| Transfer Doc | 0000000944 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | KING WA |
| Property Address | 508 18TH AVE S, SEATTLE, WA 98144-2131 |
| Transaction Type | Mortgage |
| Record Updated | Apr 6, 2022 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000000774 |
|---|---|
| Date | Mar 28, 2022 |
| Instrument | 20220328000774 |
| Name | US BANK NA |
|---|---|
| Type | Bank |
| Address | OWENSBORO, KY 42301 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Apr 1, 2052 |
The 2026 property tax bill for 508 18th Ave S was $1,934 with a senior citizen's exemption.
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 | $1,934.00 Senior Citizen's exemption | ||
| 2025 | $1,565,000 (+102.72%) Land $633,000 Building $932,000 | $1,565,000 (+3.71%) Land $633,000 Building $932,000 | |
| 2024 | $1,894.00 Senior Citizen's exemption | $772,000 Land $282,000 Building $490,000 | $1,509,000 Land $621,000 Building $888,000 |
| 2022 | $1,924.00 Senior Citizen's exemption | $772,000 Land $282,000 Building $490,000 | $772,000 Land $282,000 Building $490,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 508 18th 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 508 18th 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 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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