Santa Clara County property record for 400 Lassen St, Los Altos, CA 94022
| Property Type | Multi-Family Dwellings |
|---|---|
| Details | 4,197 sqft · built 1963 |
| Lot Size | 0.163 acres (7,100 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $1,488,000 (May 2005) |
| Tax Bill | $30,769 (2025) |
| Deeds & Mortgages | Jun 2021 Mortgage Feb 2021 Transfer |
| Flood Zone | Zone X (moderate risk) |
| APN | 170-39-027 |
| Primary APN | 170-39-027 |
|---|
| Stories | 2 Stories |
|---|---|
| Building Area | 4,197 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Elevator | Elevator |
| Year Built | Built 1963 |
|---|---|
| Effective Year Built | Effective 1963 |
| Architectural Style | Spanish |
| Construction Type | Wood |
| Lot Area | 7,100 sqft (0.163 acres) |
| Lot Dimensions | 142 ft deep x 50 ft wide |
| Garage Type | Attached |
| Cooling System | None |
|---|---|
| Heating System | HVAC |
| Street Address | 400 LASSEN ST |
|---|---|
| City | LOS ALTOS |
| State | CA |
| Zip | 94022-3904 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Multi-Family Dwellings |
| Local Zoning Code | R318 |
| Legal Description | BLK 32 LOT 2 RECORDERS BOOK M PAGE 1 |
| Legal Subdivision | LOS ALTOS MAP 03 |
| Jurisdiction | SANTA CLARA CA |
| Township / Civil Division | SAN JOSE |
| Census Block Group | 2 |
| Census Block | 2039 |
| Census Tract | 510300 |
Source: Santa Clara County records, as of July 27, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 400 LASSEN ST, LOS ALTOS, CA 94022-3904 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Date | Document |
|---|---|
| Jun 21, 2021 | Intrafamily Transfer, Transfer · Conventional Mortgage AMERICAN PACIFIC MORTGAGE CORP |
| Feb 10, 2021 | Intrafamily Transfer, Transfer |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 25, 2005 · Amount on Record |
| Deed Sale | May 25, 2005 · Amount on Record |
| Deed Document Number | 200518387406 |
| Last Transfer Date | Feb 10, 2025 |
| Transfer Doc | 0025774381 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Recording Date | Jun 21, 2021 |
| Property Address | 400 LASSEN ST, LOS ALTOS, CA 94022-3904 |
| Document Number | 0025000537 |
| Map Reference | MB M PG 1 |
| Instrument Date | Jun 8, 2021 |
| Instrument | 25000537 |
| Transaction Type | Transfer |
| Record Updated | Jul 1, 2021 |
| Title Company | CAL LAND TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 400 LASSEN ST, LOS ALTOS, CA 94022-3904 |
| Document Number | 0025000538 |
|---|---|
| Date | Jun 21, 2021 |
| Instrument | 25000538 |
| Name | AMERICAN PACIFIC MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jul 1, 2051 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Recording Date | Feb 10, 2021 |
| Property Address | 400 LASSEN ST, LOS ALTOS, CA 94022-3904 |
| Document Number | 0024824269 |
| Map Reference | MB M PG 1 |
| Instrument Date | Feb 9, 2021 |
| Instrument | 24824269 |
| Transaction Type | Transfer |
| Record Updated | Sep 1, 2021 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 400 LASSEN ST, LOS ALTOS, CA 94022-3904 |
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 | $2,427,221 (+6.12%) Land $1,943,163 Building $484,058 | |
| 2025 | $30,769.00 | |
| 2023 | $2,287,227 Land $1,831,087 Building $456,140 |
Assessed value is set for property tax purposes and is not a market price estimate.
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.
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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