21131 Chirping Sparrow Rd, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21131 Chirping Sparrow Rd, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,544 sqft · built 1982
Lot Size	0.241 acres (10,505 sqft)
Owner	2 Trust Names on File
Last Sale	$845,000 (May 2017)
Tax Bill	$13,321 (2025)
Deeds & Mortgages	Feb 2021 Mortgage May 2017 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8714-020-040`

Property Details

APN / Parcel Number

Primary APN	`8714-020-040`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	14 Rooms
Stories	2 Stories
Building Area	2,544 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1982
Effective Year Built	Effective 1982
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Tile
Lot Area	10,505 sqft (0.241 acres)
Lot Dimensions	134 ft deep x 79 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Water Source	Commercial

Location & Zoning

Street Address	21131 CHIRPING SPARROW RD
City	DIAMOND BAR
State	CA
Zip	91765-3765
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR19000*
Legal Description	*TR=29053 LOT 46
Legal Subdivision	29053
Legal Tract	29053
Legal Block	2
Legal Lot Number	46
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2012
Census Tract	403325

Owner

21131 Chirping Sparrow Rd is held in a trust since May 2017.

Source: Los Angeles County records, as of August 25, 2026

Owner of Record	2 Trust Names on File
Mailing Address	21131 CHIRPING SPARROW RD, DIAMOND BAR, CA 91765-3765
Owner Type	Company
Vesting	Trust

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Feb 11, 2021	Deed of Trust, Mortgage · Conventional Mortgage JJST CORPORATION
May 23, 2017	Grant Deed, Transfer · Conventional Mortgage CITIBANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 23, 2017 · Amount on File
Deed Sale	May 23, 2017 · Amount on File
Prior Sale	May 9, 2013 · Amount on File
Deed Document Number	2017569525
Prior Transfer Date	Apr 26, 2008
Prior Transfer Doc	0000870855
Record Updated	Oct 29, 2026

February 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21131 CHIRPING SPARROW RD, DIAMOND BAR, CA 91765-3765
Transaction Type	Mortgage
Record Updated	Feb 18, 2021
Title Company	WFG NATIONAL TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21131 CHIRPING SPARROW RD, DIAMOND BAR, CA 91765-3765

Mortgage

Document Number	0000243386
Date	Feb 11, 2021
Instrument	21-0243386

Lender

Name	JJST CORPORATION
Type	Non-Lending Institution
Address	ROWLAND HEIGHTS, CA 91748

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	181 Months
Due	Mar 1, 2036

May 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	May 23, 2017
Property Address	21131 CHIRPING SPARROW RD, DIAMOND BAR, CA 91765-3765
Document Number	0000569525
Map Reference	MB909 PG9-13
Instrument Date	May 16, 2017
Instrument	17-0569525
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	WFG NATIONAL TITLE CO OF CA

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21131 CHIRPING SPARROW RD, DIAMOND BAR, CA 91765-3765

Mortgage

Document Number	0000569526
Date	May 23, 2017
Instrument	17-0569526

Lender

Name	CITIBANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jun 1, 2047

Tax Assessment & Valuation

The 2025 property tax bill for 21131 Chirping Sparrow Rd was $13,321.

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		$1,062,568 (+2%) Land $595,918 Building $466,650
2025	$13,321.00	$1,041,736 Land $584,234 Building $457,502
2023	$12,249.00 (+2.11%)	$1,001,287 Land $561,549 Building $439,738
2022	$11,996.00

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

Flood

FEMA maps place 21131 Chirping Sparrow Rd in Zone X, an area of minimal flood risk.

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

Wildfire risk around 21131 Chirping Sparrow Rd is high, ranking above 71% of the US, with a 0.3% annual chance of wildfire.

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

Wildfire Risk	High above 71% of the US · above 46% of California
Wildfire Likelihood	0.3% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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 565 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
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: Frontier, Verizon.

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