Santa Clara County property record for 497 Lassen St, Los Altos, CA 94022
| Property Type | Condominium |
|---|---|
| Details | 2 bd · 1.5 ba · 1,151 sqft · built 1981 |
| Lot Size | 0.01 acres (435 sqft) |
| Owner | Individual Name on File |
| Last Sale | $460,000 (Nov 1999) |
| Tax Bill | $9,738 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 170-39-061 |
| Primary APN | 170-39-061 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 5 Rooms |
| Stories | 2 Stories |
| Building Area | 1,151 sqft Living Area |
| 1st Floor Area | 614 sqft |
| 2nd Floor Area | 537 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1981 |
|---|---|
| Effective Year Built | Effective 1982 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 435 sqft (0.01 acres) |
| Garage Area | 200 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Street Address | 497 LASSEN ST |
|---|---|
| City | LOS ALTOS |
| State | CA |
| Zip | 94022-3968 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Local Zoning Code | R318 |
| Legal Description | TRACT 7193 BOOK 495 PAGE 40 PAGE 42 |
| Legal Tract | 7193 |
| Legal Lot Number | 1 |
| Jurisdiction | SANTA CLARA CA |
| Township / Civil Division | SAN JOSE |
| Census Block Group | 2 |
| Census Block | 2040 |
| Census Tract | 510300 |
497 Lassen St, a condominium, is owned and occupied by an individual who bought it in November 1999.
Source: Santa Clara County records, as of July 27, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 497 LASSEN ST, LOS ALTOS, CA 94022-3968 |
| 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 | Name on Deed |
|---|---|
| Last Sale | Nov 10, 1999 · Amount on File |
| Deed Sale | Nov 10, 1999 · Amount on File |
| Prior Sale | Dec 17, 1993 · Amount on File |
| Deed Document Number | 199915053897 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 497 Lassen St was $9,738.
Source: Santa Clara County assessment roll, as of July 27, 2026
| Type | Name |
|---|---|
| State | California |
| County | Santa Clara County |
| Municipality | Los Altos City |
| Elementary School District | Los Altos Elementary School District (KG - 08) |
| Secondary School District | Mountain View-Los Altos Union School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $721,127 (+2%) Land $391,919 Building $329,208 | |
| 2025 | $9,738.00 | $706,988 Land $384,235 Building $322,753 |
| 2023 | $9,162.00 (+1.11%) | $679,536 Land $369,315 Building $310,221 |
| 2022 | $9,061.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 497 Lassen St in Zone X, an area of moderate flood risk.
Source: FEMA National Flood Hazard Layer, effective January 18, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| 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 497 Lassen 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 | CWSC LOS ALTOS SUBURBAN private · serves 63,559 people · EPA ID CA4310001 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Aug 2024 |
| Lead | 2 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.
Source: FCC Broadband Data Collection, based on 537 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Cruzio Fixed Wireless | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| Ridge Wireless Fixed Wireless | 100 / 60 |
May also be available: GeoLinks, T-Mobile.
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