King County property record for 12478 Beacon Ave S, Seattle, WA 98178
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1.5 ba · 2,130 sqft · built 1951 |
| Lot Size | 1.23 acres (54,014 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $155,000 (Sep 1992) |
| Tax Bill | $7,883 (2026) |
| Deeds & Mortgages | Dec 2016 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 112304-9047 |
| Primary APN | 112304-9047 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Stories | 1 Story |
| Building Area | 2,130 sqft Living Area |
| Gross Area | 3,340 sqft |
| 1st Floor Area | 1,470 sqft |
| Basement Area | 1,470 sqft |
| Finished Basement | 660 sqft |
| Unfinished Basement | 810 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1951 |
|---|---|
| Effective Year Built | Effective 1951 |
| Exterior Material | Brick |
| Lot Area | 54,014 sqft |
| Garage Type | Attached |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 112304904702 |
|---|---|
| Street Address | 12478 BEACON AVE S |
| City | SEATTLE |
| State | WA |
| Zip | 98178-3637 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R-8 |
| Legal Description | BEG AT PT 842.50 FT E & 396 FT S OF NW COR OF SE 1/4 OF SE 1/4 TH N 87-04-00 W 144.49 FT TH S 14-13-30 W 128.97 FT TH S 39-15-30 W 75.58 FT TH S 75-20-30 W 101 FT TO R/W TH SELY TO S LN OF N 1/2 OF SUBD TH E 206 FT TH N 264 FT TO BEG |
| Legal Range | 04 |
| Legal Township | 23 |
| Legal Section | 11 |
| Legal Block | 47 |
| Legal Lot Number | 112304 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 26102 |
Source: King County records, as of July 7, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 12478 BEACON AVE S, SEATTLE, WA 98178-3637 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 18, 1992 · Amount on Record |
| Deed Sale | Sep 18, 1992 · Amount on Record |
| Deed Document Number | 19929230691 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | KING WA |
| Property Address | 12478 BEACON AVE S, SEATTLE, WA 98178-3637 |
| Document Number | 0000001322 |
| Instrument Date | Dec 22, 2016 |
| Transaction Type | Mortgage |
| Record Updated | Jan 10, 2017 |
| Title Company | OTHER |
| Name | Verified Name |
|---|---|
| Address | 12478 BEACON AVE S SEATTLE WA 981783637, SEATTLE, WA 98178-3637 |
| Document Number | 0000001322 |
|---|---|
| Date | Jan 3, 2017 |
| Instrument | 201701031322 |
| Name | BOEING EMPS CU |
|---|---|
| Type | Credit Union |
| Address | SEATTLE, WA 98124-9750 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 300 Months |
| Due | Jan 2, 2042 |
| Rate Type | Adjustable Rate |
|---|
Source: King County assessment roll, as of July 7, 2026
| Type | Name |
|---|---|
| State | Washington |
| County | King County |
| Unified School District | Renton School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $7,883.00 (+2.92%) | ||
| 2025 | $652,000 (-2.69%) Land $508,000 Building $144,000 | $652,000 (-2.69%) Land $508,000 Building $144,000 | |
| 2024 | $7,659.00 (-1.8%) | $670,000 (-7.71%) Land $535,000 Building $135,000 | $670,000 (-7.71%) Land $535,000 Building $135,000 |
| 2022 | $7,799.00 | $726,000 Land $608,000 Building $118,000 | $726,000 Land $608,000 Building $118,000 |
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
| 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.
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 | SKYWAY WATER & SEWER serves 12,036 people · EPA ID WA5338800 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Oct 2022 |
| Lead | Under 1 ppb (2023–2025) 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 364 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| CenturyLink Fiber | 8,000 / 8,000 |
| Xfinity Cable | 2,000 / 2,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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