Lassen St, Los Altos, CA Property Records

Santa Clara County property records for 44 addresses on Lassen St, Los Altos, CA · Last verified August 2026

Lassen St Highlights

Properties 78
Median Sale Price $1,500,000
Deeds and Mortgages on File 115
Median Price per Sqft $1,017
Owner Occupied 53%
Median Annual Tax Bill $14,068
Median Year Built 1980
Median Ownership Tenure 9 years

Properties on Lassen St

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

400 Lassen St

4,197 sqft · Built 1963 · 0.162 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$1,488,000May 2005 $30,7692025 —Feb 2021 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

411 Lassen St

2 bd · 2 ba · 1,107 sqft · 0.049 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$1,7352025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

430 Lassen St

10 units · Built 1982 · 1,441 sq ft

Last Sale Median Tax Bill Median Sale    
$1,665,000Feb 2025 $20,7482025 $1,535,00010 units    

439 Lassen St

13,177 sqft · Built 1967 · 0.488 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$24,6352025 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

455 Lassen St

4,212 sqft · Built 1964 · 0.195 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$6,0452025 —Jun 2000 1 Name on Record AssessorUpdated Aug 2026

460 Lassen St

11 units · Built 1964 · 944 sq ft

Last Sale Median Tax Bill Median Sale    
$939,000Nov 2025 $14,4292025 $1,200,00011 units    

477 Lassen St

9 units · Built 1975 · 1,179 sq ft

Last Sale Median Tax Bill Median Sale    
$965,000Jan 2026 $9,3442025 $650,0009 units    

480 Lassen St

6 units · Built 1975 · 1,284 sq ft

Last Sale Median Tax Bill Median Sale    
$1,300,000Mar 2026 $9,5972025 $1,300,0006 units    

494 Lassen St

3 units · Built 1980 · 872 sq ft

Last Sale Median Tax Bill Median Sale    
$1,450,000Aug 2021 $19,4052025 $1,450,0003 units    

497 Lassen St

2 bd · 2 ba · 1,151 sqft · 0.009 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$460,000Nov 1999 $9,7382025 Amount on Record Dec 1993 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

507 Lassen St, #3

2 bd · 3 ba · 1,230 sqft · 0.046 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$680,000Sep 2010 $11,7712025 —Dec 2014 1 Name on Record AssessorUpdated Oct 2025

510 Lassen St

7,324 sqft · Built 1962 · 0.325 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$5,250,000Nov 2021 $69,5372025 —May 2003 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

511 Lassen St

2 bd · 3 ba · 1,280 sqft · 0.046 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,500,000Aug 2021 $19,9652025 Amount on Record May 2020 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2025

517 Lassen St

2 bd · 2.5 ba · 1,412 sqft · 0.046 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Nov 2010 $12,5012025 —Jan 2017 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

526 Lassen St

2 bd · 1 ba · 1,377 sqft · 0.162 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$34,9972025 —Nov 1995 2 Names on Record Assessor + 1 DocumentUpdated Aug 2026

527 Lassen St

3,293 sqft · Built 1958 · 0.325 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$14,6892025 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

530 Lassen St

3 bd · 3 ba · 1,871 sqft · 0.009 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,675,000Apr 2014 $24,4352025 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated Oct 2025

534 Lassen St

3 bd · 3 ba · 1,845 sqft · 0.009 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—May 2006 $6,1382025 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

540 Lassen St

1 ba · 756 sqft · 0.009 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$560,000Feb 2006 $10,7692025 1 Name on Record AssessorUpdated Oct 2025

542 Lassen St

2 bd · 3 ba · 1,420 sqft · 0.054 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$15,7552025 —Mar 2006 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2025

543 Lassen St

2 bd · 2 ba · 1,427 sqft · 0.009 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,865,000Sep 2021 $24,3962025 Amount on Record Mar 1995 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

544 Lassen St

2 bd · 3 ba · 1,544 sqft · 0.054 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—May 2006 $17,5532025 1 Name on Record AssessorUpdated Oct 2025

545 Lassen St

2 bd · 2 ba · 1,402 sqft · 0.009 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$800,000May 2010 $13,5982025 —May 2004 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

546 Lassen St

2 bd · 3 ba · 1,491 sqft · 0.054 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Dec 2010 $14,3732025 Amount on Record Oct 2009 1 Name on Record AssessorUpdated Oct 2025

547 Lassen St

1 bd · 1 ba · 676 sqft · 0.009 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$565,000Jul 2007 $10,1262025 Amount on Record May 2002 2 Names on Record AssessorUpdated Oct 2025

549 Lassen St

2 bd · 2 ba · 1,207 sqft · 0.009 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,410,000Oct 2019 $19,6112025 —Jun 2001 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

550 Lassen St

2 bd · 3 ba · 1,927 sqft · 0.04 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$12,6912025 —Dec 2019 1 Name on Record Assessor + 2 DocumentsUpdated Oct 2025

551 Lassen St

2 bd · 1 ba · 862 sqft · 0.009 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$575,000Sep 2011 $10,0892025 Amount on Record Apr 1994 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

552 Lassen St

2 bd · 3 ba · 954 sqft · 0.04 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$10,0752025 —Jul 2012 1 Name on Record Assessor + 2 DocumentsUpdated Oct 2025

553 Lassen St

2 bd · 2 ba · 1,194 sqft · 0.009 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,400,000Mar 2021 $19,2062025 Amount on Record Apr 2016 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

554 Lassen St

2 bd · 3 ba · 926 sqft · 0.04 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$10,0922025 —Nov 2019 1 Name on Record Assessor + 2 DocumentsUpdated Oct 2025

555 Lassen St

2 bd · 2 ba · 1,414 sqft · 0.009 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,751,000Jul 2021 $22,4812025 —Mar 2017 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Oct 2025

556 Lassen St

1 bd · 1 ba · 525 sqft · 0.04 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$8,0302025 —Oct 2019 1 Name on Record Assessor + 2 DocumentsUpdated Oct 2025

558 Lassen St

4,181 sqft · Built 1971 · 0.162 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$3,400,000Jul 2026 $4,4912025 —Mar 2026 1 Name on Record Assessor + 5 DocumentsUpdated Aug 2026

561 Lassen St

2,214 sqft · Built 1973 · 0.162 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$5,7922025 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

568 Lassen St, Apt 2

4,605 sqft · Built 1964 · 0.162 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,600,000Mar 2018 $50,6832025 —Mar 2018 1 Name on Record Assessor + 2 DocumentsUpdated Aug 2026

569 Lassen St

7 bd · 2.5 ba · 3,864 sqft · 0.13 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$4,500,000Jul 2025 $50,8832025 Amount on Record Mar 2011 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

572 Lassen St

2 bd · 1.5 ba · 1,168 sqft · 0.046 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$8,3512025 —Sep 2009 1 Name on Record AssessorUpdated Aug 2026

574 Lassen St

2 bd · 2 ba · 1,050 sqft · 0.046 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$525,000Dec 2005 $10,8042025 —Apr 2007 1 Name on Record AssessorUpdated Oct 2025

576 Lassen St

2 bd · 2 ba · 959 sqft · 0.046 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,300,000Oct 2021 $17,5702025 Amount on Record Jun 2018 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Oct 2025

579 Lassen St

2,229 sqft · Built 1955 · 0.162 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,655,000Oct 2007 2 Names on Record AssessorUpdated Aug 2023

584 Lassen St

4,612 sqft · Built 1960 · 0.29 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$2,350,750Feb 2013 $38,0172025 —Jan 2013 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

587 Lassen St

2 bd · 2.5 ba · 1,363 sqft · 0.03 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,770,000May 2023 $21,9582024 Amount on Record May 2006 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

591 Lassen St

2 bd · 2.5 ba · 1,360 sqft · 0.034 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Dec 1992 $7,4062025 1 Name on Record AssessorUpdated Aug 2026

Wildfire Risk on Lassen St

Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020

Wildfire Risk to HomesNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach of burnable land

Property Records in Nearby Streets