21238 Cold Spring Ln, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21238 Cold Spring Ln, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,412 sqft · built 1962
Lot Size	0.175 acres (7,642 sqft)
Owner	2 Company Names on Record
Tax Bill	$8,086 (2025)
Deeds & Mortgages	Jul 2020 Transfer Dec 2019 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8285-025-006`

Property Details

APN / Parcel Number

Primary APN	`8285-025-006`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	1,412 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1962
Effective Year Built	Effective 1965
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	7,642 sqft (0.175 acres)
Lot Dimensions	110 ft deep x 69 ft wide

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	21238 COLD SPRING LN
City	DIAMOND BAR
State	CA
Zip	91765-3440
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR171/2
Legal Description	TRACT # 25985 LOT 6
Legal Subdivision	25985
Legal Tract	25985
Legal Block	1
Legal Lot Number	6
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1011
Census Tract	403325

Owner

Source: Los Angeles County records, as of August 25, 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	1114 PEBBLEWOOD DR, DIAMOND BAR, CA 91765-4356
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Jul 30, 2020	Affidavit of Death, Transfer ATTORNEY ONLY
Dec 10, 2019	Affidavit of Death, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Record Updated	Oct 29, 2026

July 2020: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	LOS ANGELES CA
Recording Date	Jul 30, 2020
Property Address	21238 COLD SPRING LN, DIAMOND BAR, CA 91765-3440
Document Number	0000862852
Instrument Date	Mar 10, 2020
Instrument	862852
Transaction Type	Transfer
Record Updated	Aug 14, 2020
Title Company	ATTORNEY ONLY

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	1114 PEBBLEWOOD DR DIAMOND BAR CA 917654356, DIAMOND BAR, CA 91765-4356

December 2019: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	LOS ANGELES CA
Recording Date	Dec 10, 2019
Property Address	21238 COLD SPRING LN, DIAMOND BAR, CA 91765-3440
Document Number	0001369872
Instrument Date	Nov 25, 2019
Instrument	1369872
Transaction Type	Transfer
Record Updated	Dec 23, 2019
Title Company	ATTORNEY ONLY

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	21238 COLD SPRING LN DIAMOND BAR CA 917653440, DIAMOND BAR, CA 91765-3440

Tax Assessment & Valuation

Source: Los Angeles County assessment roll, as of August 25, 2026

Property Jurisdictions

Type	Name
State	California
County	Los Angeles County
Municipality	Diamond Bar City
Unified School District	Walnut Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$644,317 (+2%) Land $532,767 Building $111,550
2025	$8,086.00 (+7.41%) Homeowner's exemption	$631,684 (+99.72%) Land $522,321 Building $109,363
2023	$7,528.00 (+83.7%) Homeowner's exemption	$316,286 Land $200,556 Building $115,730
2022	$4,098.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

Source: FEMA National Flood Hazard Layer, effective September 30, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

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

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	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.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	WALNUT VALLEY WATER DISTRICT serves 100,941 people · EPA ID CA1910234
Water Source	Purchased surface water from several systems
Last State Inspection	Jun 2023
Lead	Under 1 ppb (2022–2024) action level 15 ppb

Violations Reported to EPA

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.

Internet Providers

Source: FCC Broadband Data Collection, based on 425 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	7,000 / 7,000
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Verizon.

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