Gerndal St, Diamond Bar, CA Property Records

Los Angeles County property records for 19 addresses on Gerndal St, Diamond Bar, CA · Last verified August 2026

Gerndal St Highlights

Properties 19
Median Sale Price $640,000
Deeds and Mortgages on File 26
Median Price per Sqft $315
Owner Occupied 95%
Median Annual Tax Bill $6,110
Median Year Built 1966
Median Ownership Tenure 17 years

Properties on Gerndal St

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

21103 Gerndal St

4 bd · 3 ba · 2,251 sqft · built 1966 · 0.214 acres

Last Sale Tax Bill Prior Sale Owner Records
$540,000Aug 2004 $12,2772025 Amount on Record Mar 2003 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

21104 Gerndal St

4 bd · 3 ba · 2,210 sqft · built 1966 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,2142025 —Aug 2000 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

21109 Gerndal St

4 bd · 2 ba · 2,145 sqft · built 1965 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$516,000Dec 2009 $8,6472025 —Dec 2009 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

21110 Gerndal St

4 bd · 2 ba · 1,965 sqft · built 1965 · 0.186 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,0012025 —Jul 1998 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

21115 Gerndal St

4 bd · 3 ba · 2,028 sqft · built 1965 · 0.187 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,8882025 —Feb 2019 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

21125 Gerndal St

4 bd · 2 ba · 1,965 sqft · built 1965 · 0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,5722025 —Jan 2020 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

21135 Gerndal St

4 bd · 3 ba · 2,038 sqft · built 1965 · 0.186 acres

Last Sale Tax Bill Prior Sale Owner Records
$227,000Nov 1993 $5,4172025 —Apr 2003 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

21205 Gerndal St

4 bd · 2 ba · 2,145 sqft · built 1965 · 0.175 acres

Last Sale Tax Bill Prior Sale Owner Records
$995,000Nov 2022 $13,0482025 Amount on Record Jan 2015 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

21206 Gerndal St

4 bd · 2 ba · 1,965 sqft · built 1965 · 0.185 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,8172025 —Jun 2022 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

21216 Gerndal St

4 bd · 3 ba · 2,028 sqft · built 1966 · 0.203 acres

Last Sale Tax Bill Prior Sale Owner Records
$640,000Jan 2018 $9,4262025 Amount on Record Jun 2000 2 Names on Record Owner Occupied Assessor + 5 DocumentsUpdated Jun 2026

21223 Gerndal St

4 bd · 3 ba · 2,210 sqft · built 1966 · 0.188 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,030,000Mar 2023 $13,4792025 Amount on Record Apr 2005 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

21229 Gerndal St

4 bd · 3 ba · 2,210 sqft · built 1966 · 0.193 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,115,000May 2024 $14,2302025 —Mar 2008 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

21237 Gerndal St

4 bd · 3 ba · 2,028 sqft · built 1966 · 0.201 acres

Last Sale Tax Bill Prior Sale Owner Records
$210,000Dec 1994 $4,9862025 —Dec 1994 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

21243 Gerndal St

4 bd · 3 ba · 2,210 sqft · built 1966 · 0.185 acres

Last Sale Tax Bill Prior Sale Owner Records
—May 2003 $4,6282025 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

21246 Gerndal St

4 bd · 3 ba · 2,210 sqft · built 1966 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$249,000Feb 1992 $6,1102025 —Mar 2018 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Jun 2026

21264 Gerndal St

4 bd · 2 ba · 1,864 sqft · built 1968 · 0.196 acres

Last Sale Tax Bill Prior Sale Owner Records
$581,000Feb 2016 $8,8292025 —Jan 2022 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

21265 Gerndal St

3 bd · 2 ba · 1,588 sqft · built 1968 · 0.185 acres

Last Sale Tax Bill Prior Sale Owner Records
$479,000Dec 2007 $8,2372025 Amount on Record Jan 2007 2 Names on Record Assessor + 2 DocumentsUpdated Aug 2026

21281 Gerndal St

4 bd · 2 ba · 1,366 sqft · built 1968 · 0.183 acres

Last Sale Tax Bill Prior Sale Owner Records
$172,000Dec 1998 $4,9092025 Amount on Record Dec 1996 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

21287 Gerndal St

7 bd · 6 ba · 3,440 sqft · built 1968 · 0.188 acres

Last Sale Tax Bill Prior Sale Owner Records
$325,003Apr 2010 $12,5302025 —Dec 2009 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

Wildfire Risk on Gerndal St

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

Wildfire RiskNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach

Property Records in Nearby Streets