King County property record for 3540 SW 99th St, Seattle, WA 98126
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1.75 ba · 1,070 sqft · built 1940 |
| Lot Size | 0.122 acres (5,320 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $117,000 (Nov 2001) |
| Tax Bill | $6,494 (2026) |
| Deeds & Mortgages | Mar 2024 Line of Credit Aug 2023 Transfer + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 003700-0315 |
| Primary APN | 003700-0315 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Stories | 1 Story |
| Building Area | 1,070 sqft Living Area |
| 1st Floor Area | 1,070 sqft |
| Office | 130 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Elevator | Elevator |
| Year Built | Built 1940 |
|---|---|
| Effective Year Built | Effective 1940 |
| Lot Area | 5,320 sqft (0.122 acres) |
| Porch | Enclosed Porch |
| Porch Area | 250 sqft |
| Deck Area | 80 sqft |
| Heating System | Floor/Wall Furnace |
|---|---|
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 003700031507 |
|---|---|
| Street Address | 3540 SW 99TH ST |
| City | SEATTLE |
| State | WA |
| Zip | 98126-4024 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | NR3 |
| Legal Description | ADAMS HEIGHTS ADD PLAT BLOCK: 2 PLAT LOT: 25 |
| Legal Range | 03 |
| Legal Township | 23 |
| Legal Section | 02 |
| Legal Subdivision | ADAMS HEIGHTS |
| Legal Block | 2 |
| Legal Lot Number | 25 |
| Jurisdiction | KING WA |
| Township / Civil Division | SEATTLE |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 12000 |
3540 SW 99th St is owned and occupied by two individuals who acquired it in July 2023.
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 | 3540 SW 99TH ST, SEATTLE, WA 98126-4024 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Mar 27, 2024 | Deed of Trust, Mortgage · Line of Credit QUALSTAR CU |
| Aug 11, 2023 | Intrafamily Transfer, Transfer |
| Mar 1, 2021 | Deed of Trust, Mortgage · Conventional Mortgage BETTER MORTGAGE CORPORATION |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Nov 14, 2001 · Amount on File |
| Deed Sale | Nov 14, 2001 · Amount on File |
| Deed Document Number | 20012005 |
| Last Transfer Date | Jul 28, 2023 |
| Transfer Doc | 0000000868 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | KING WA |
| Property Address | 3540 SW 99TH ST, SEATTLE, WA 98126-4024 |
| Transaction Type | Mortgage |
| Record Updated | Apr 11, 2024 |
| Title Company | CW TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000000197 |
|---|---|
| Date | Mar 27, 2024 |
| Instrument | 20240327000197 |
| Name | QUALSTAR CU |
|---|---|
| Type | Credit Union |
| Address | PO BOX 3050, BOTHELL, WA 98041 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 301 Months |
| Due | Apr 12, 2049 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | KING WA |
| Recording Date | Aug 11, 2023 |
| Property Address | 3540 SW 99TH ST, SEATTLE, WA 98126-4024 |
| Document Number | 0000000868 |
| Map Reference | VOL 19 PG 28 |
| Instrument Date | Jul 28, 2023 |
| Instrument | 20230811000868 |
| Transaction Type | Transfer |
| Record Updated | Aug 22, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 3540 SW 99TH ST, SEATTLE, WA 98126-4024 |
| Name | Verified Name |
|---|---|
| Relationship | Tenants in Common |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | KING WA |
| Property Address | 3540 SW 99TH ST, SEATTLE, WA 98126-4024 |
| Transaction Type | Mortgage |
| Record Updated | Mar 10, 2021 |
| Title Company | STEWART TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000002481 |
|---|---|
| Date | Mar 1, 2021 |
| Instrument | 20210301002481 |
| Name | BETTER MORTGAGE CORPORATION |
|---|---|
| Type | Mortgage Company |
| Address | SEATTLE, WA 98168 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 144 Months |
| Due | Mar 1, 2033 |
The 2026 property tax bill for 3540 SW 99th St was $6,494.
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 | $6,494.00 | ||
| 2025 | $582,000 (+4.86%) Land $402,000 Building $180,000 | $582,000 (+4.86%) Land $402,000 Building $180,000 | |
| 2024 | $5,794.00 (+24.39%) | $555,000 Land $382,000 Building $173,000 | $555,000 Land $382,000 Building $173,000 |
| 2023 | $4,658.00 | ||
| 2022 | $4,658.00 | $489,000 Land $274,000 Building $215,000 | $489,000 Land $274,000 Building $215,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3540 SW 99th 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 | 2 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.
Wildfire risk around 3540 SW 99th St is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.4% of Washington |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 774 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| CenturyLink Fiber · DSL in parts of the area | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
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