21300 Tambo Pl, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21300 Tambo Pl, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,728 sqft · built 1962
Lot Size	0.283 acres (12,333 sqft)
Owner	Individual Name on Record
Last Sale	$800,000 (Dec 2020)
Tax Bill	$11,087 (2025)
Deeds & Mortgages	Nov 2021 Mortgage Dec 2020 Sale & Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`8292-002-005`

Property Details

APN / Parcel Number

Primary APN	`8292-002-005`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	9 Rooms
Stories	1 Story
Building Area	1,728 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	Gravel
Lot Area	12,333 sqft (0.283 acres)
Lot Dimensions	150 ft deep x 83 ft wide
Garage Type	Attached

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Water Source	Commercial

Location & Zoning

Street Address	21300 TAMBO PL
City	DIAMOND BAR
State	CA
Zip	91765-2755
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR18000*
Legal Description	TRACT NO 27036 LOT 5
Legal Subdivision	27036
Legal Tract	27036
Legal Block	2
Legal Lot Number	5
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2005
Census Tract	403328

Owner

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

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

Owner of Record	Individual Name on Record
Mailing Address	21300 TAMBO PL, DIAMOND BAR, CA 91765-2755
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Nov 17, 2021	Deed of Trust, Mortgage · Conventional Mortgage SUMMIT MORTGAGE BANKERS INC
Dec 18, 2020	Grant Deed, Transfer · Conventional Mortgage SUMMIT MORTGAGE BANKERS INC
Jun 11, 2019	Quit Claim Deed, Transfer NOT AVAILABLE
Sep 10, 2018	Grant Deed, Transfer · ARM EAST WEST BANK

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Dec 18, 2020 · Amount on Record
Deed Sale	Dec 18, 2020 · Amount on Record
Prior Sale	Sep 10, 2018 · Amount on Record
Deed Document Number	20201687366
Prior Transfer Date	May 23, 2019
Prior Transfer Doc	0000545893
Record Updated	Oct 29, 2026

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21300 TAMBO PL, DIAMOND BAR, CA 91765-2755
Transaction Type	Mortgage
Record Updated	Nov 25, 2021
Title Company	WFG NATIONAL TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21300 TAMBO PL, DIAMOND BAR, CA 91765-2755

Mortgage

Document Number	0001707935
Date	Nov 17, 2021
Instrument	21-1707935

Lender

Name	SUMMIT MORTGAGE BANKERS INC
Type	Mortgage Company
Address	FLUSHING, NY 11354

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Dec 1, 2051

December 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Dec 18, 2020
Property Address	21300 TAMBO PL, DIAMOND BAR, CA 91765-2755
Document Number	0001687366
Map Reference	MB 683 PG 9&10
Instrument Date	Dec 15, 2020
Instrument	20-1687366
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	WFG NATIONAL TITLE COMPANY

Transaction

Amount	Amount Recorded
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	21300 TAMBO PL, DIAMOND BAR, CA 91765-2755

Mortgage

Document Number	0001687367
Date	Dec 18, 2020
Instrument	20-1687367

Lender

Name	SUMMIT MORTGAGE BANKERS INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jan 1, 2051

June 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jun 11, 2019
Property Address	21300 TAMBO PL, DIAMOND BAR, CA 91765-2755
Document Number	0000545893
Instrument Date	May 23, 2019
Instrument	545893
Transaction Type	Transfer
Record Updated	Jun 18, 2019
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	21300 TAMBO PL DIAMOND BAR CA 917652755, DIAMOND BAR, CA 91765-2755

September 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Sep 10, 2018
Property Address	21300 TAMBO PL, DIAMOND BAR, CA 91765-2755
Document Number	0000914483
Map Reference	MB 683 PG 9&10
Instrument Date	Jul 26, 2018
Instrument	18-0914483
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount Recorded
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	21300 TAMBO PL, DIAMOND BAR, CA 91765-2755

Mortgage

Document Number	0000914484
Date	Sep 10, 2018
Instrument	18-0914484

Lender

Name	EAST WEST BANK
Type	Bank

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2048

Interest

Rate Type	Adjustable Rate
Rate	4.75%
Type Change Date	Oct 1, 2023
Change Frequency	Annually
Min Rate At Change	3.25%
Max Rate At Change	6.75%
Index	1-Year CMT
Max Rate	10.7%

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		$883,261 (+2%) Land $662,888 Building $220,373
2025	$11,087.00 (+7.75%)	$865,943 (+4.04%) Land $649,891 Building $216,052
2023	$10,290.00 (+2.09%)	$832,319 (+2%) Land $624,656 Building $207,663
2022	$10,079.00	$816,000 Land $612,408 Building $203,592

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 94% of the US · lower than 96% of California
Wildfire Likelihood	Under 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 437 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	7,000 / 7,000
Spectrum Cable	1,000 / 35
AT&T Fixed Wireless	100 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks, Verizon.

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